./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy7.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy7.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:47:31,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:47:31,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:47:31,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:47:31,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:47:31,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:47:31,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:47:31,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:47:31,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:47:31,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:47:31,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:47:31,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:47:31,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:47:31,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:47:31,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:47:31,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:47:31,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:47:31,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:47:31,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:47:31,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:47:31,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:47:31,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:47:31,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:47:31,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:47:31,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:47:31,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:47:31,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:47:31,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:47:31,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:47:31,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:47:31,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:47:31,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:47:31,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:47:31,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:47:31,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:47:31,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:47:31,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:47:31,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:47:31,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:47:31,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:47:31,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:47:31,479 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:47:31,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:47:31,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:47:31,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:47:31,524 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:47:31,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:47:31,525 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:47:31,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:47:31,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:47:31,526 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:47:31,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:47:31,528 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:47:31,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:47:31,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:47:31,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:47:31,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:47:31,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:47:31,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:47:31,530 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:47:31,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:47:31,530 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:47:31,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:47:31,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:47:31,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:47:31,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:47:31,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:47:31,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:47:31,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:47:31,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:47:31,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:47:31,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:47:31,533 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:47:31,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:47:31,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:47:31,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 [2022-11-18 20:47:31,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:47:31,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:47:31,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:47:31,916 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:47:31,917 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:47:31,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/test-easy7.wvr.c [2022-11-18 20:47:32,006 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/data/62560261d/cb807580cce449f897b9f7f1ec393159/FLAG49315fe72 [2022-11-18 20:47:32,525 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:47:32,525 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/sv-benchmarks/c/weaver/test-easy7.wvr.c [2022-11-18 20:47:32,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/data/62560261d/cb807580cce449f897b9f7f1ec393159/FLAG49315fe72 [2022-11-18 20:47:32,893 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/data/62560261d/cb807580cce449f897b9f7f1ec393159 [2022-11-18 20:47:32,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:47:32,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:47:32,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:47:32,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:47:32,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:47:32,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:47:32" (1/1) ... [2022-11-18 20:47:32,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b32b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:32, skipping insertion in model container [2022-11-18 20:47:32,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:47:32" (1/1) ... [2022-11-18 20:47:32,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:47:32,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:47:33,161 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2022-11-18 20:47:33,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:47:33,175 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:47:33,194 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2022-11-18 20:47:33,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:47:33,209 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:47:33,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33 WrapperNode [2022-11-18 20:47:33,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:47:33,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:47:33,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:47:33,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:47:33,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33" (1/1) ... [2022-11-18 20:47:33,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33" (1/1) ... [2022-11-18 20:47:33,249 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-11-18 20:47:33,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:47:33,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:47:33,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:47:33,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:47:33,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33" (1/1) ... [2022-11-18 20:47:33,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33" (1/1) ... [2022-11-18 20:47:33,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33" (1/1) ... [2022-11-18 20:47:33,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33" (1/1) ... [2022-11-18 20:47:33,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33" (1/1) ... [2022-11-18 20:47:33,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33" (1/1) ... [2022-11-18 20:47:33,273 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33" (1/1) ... [2022-11-18 20:47:33,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33" (1/1) ... [2022-11-18 20:47:33,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:47:33,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:47:33,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:47:33,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:47:33,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33" (1/1) ... [2022-11-18 20:47:33,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:47:33,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:47:33,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:47:33,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154b9339-6001-4118-b546-bcef1897790a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:47:33,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:47:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:47:33,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:47:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:47:33,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:47:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:47:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:47:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:47:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:47:33,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:47:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:47:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:47:33,397 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:47:33,502 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:47:33,505 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:47:33,680 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:47:33,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:47:33,705 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:47:33,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:47:33 BoogieIcfgContainer [2022-11-18 20:47:33,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:47:33,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:47:33,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:47:33,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:47:33,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:47:32" (1/3) ... [2022-11-18 20:47:33,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246a2e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:47:33, skipping insertion in model container [2022-11-18 20:47:33,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:33" (2/3) ... [2022-11-18 20:47:33,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246a2e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:47:33, skipping insertion in model container [2022-11-18 20:47:33,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:47:33" (3/3) ... [2022-11-18 20:47:33,717 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2022-11-18 20:47:33,726 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:47:33,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:47:33,737 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:47:33,737 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:47:33,816 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:47:33,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 94 transitions, 204 flow [2022-11-18 20:47:33,940 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2022-11-18 20:47:33,941 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:47:33,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 2/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-18 20:47:33,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 94 transitions, 204 flow [2022-11-18 20:47:33,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 83 transitions, 178 flow [2022-11-18 20:47:33,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:47:33,978 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@820dc9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:47:33,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 20:47:34,027 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-11-18 20:47:34,028 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:47:34,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:34,029 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:34,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:47:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:34,035 INFO L85 PathProgramCache]: Analyzing trace with hash 126118782, now seen corresponding path program 1 times [2022-11-18 20:47:34,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:34,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304008846] [2022-11-18 20:47:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:34,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:36,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:36,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:36,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304008846] [2022-11-18 20:47:36,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304008846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:36,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:36,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:47:36,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152730890] [2022-11-18 20:47:36,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:36,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:47:36,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:36,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:47:36,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:47:36,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:47:36,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 178 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:36,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:36,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:47:36,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:38,244 INFO L130 PetriNetUnfolder]: 179/515 cut-off events. [2022-11-18 20:47:38,245 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-18 20:47:38,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 515 events. 179/515 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2118 event pairs, 133 based on Foata normal form. 3/511 useless extension candidates. Maximal degree in co-relation 824. Up to 332 conditions per place. [2022-11-18 20:47:38,255 INFO L137 encePairwiseOnDemand]: 60/94 looper letters, 47 selfloop transitions, 28 changer transitions 34/148 dead transitions. [2022-11-18 20:47:38,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 148 transitions, 535 flow [2022-11-18 20:47:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:47:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:47:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1583 transitions. [2022-11-18 20:47:38,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5613475177304964 [2022-11-18 20:47:38,288 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1583 transitions. [2022-11-18 20:47:38,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1583 transitions. [2022-11-18 20:47:38,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:38,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1583 transitions. [2022-11-18 20:47:38,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.766666666666666) internal successors, (1583), 30 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:38,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:38,315 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:38,317 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 178 flow. Second operand 30 states and 1583 transitions. [2022-11-18 20:47:38,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 148 transitions, 535 flow [2022-11-18 20:47:38,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 148 transitions, 521 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:47:38,326 INFO L231 Difference]: Finished difference. Result has 136 places, 103 transitions, 360 flow [2022-11-18 20:47:38,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=360, PETRI_PLACES=136, PETRI_TRANSITIONS=103} [2022-11-18 20:47:38,340 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 48 predicate places. [2022-11-18 20:47:38,340 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 103 transitions, 360 flow [2022-11-18 20:47:38,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:38,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:38,341 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:38,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:47:38,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:47:38,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:38,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1479619674, now seen corresponding path program 2 times [2022-11-18 20:47:38,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:38,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898846939] [2022-11-18 20:47:38,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:38,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:39,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:39,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898846939] [2022-11-18 20:47:39,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898846939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:39,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:39,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:47:39,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177638656] [2022-11-18 20:47:39,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:39,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:47:39,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:39,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:47:39,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:47:39,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:47:39,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 103 transitions, 360 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:39,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:39,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:47:39,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:40,877 INFO L130 PetriNetUnfolder]: 202/559 cut-off events. [2022-11-18 20:47:40,877 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2022-11-18 20:47:40,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1546 conditions, 559 events. 202/559 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2507 event pairs, 22 based on Foata normal form. 1/558 useless extension candidates. Maximal degree in co-relation 1515. Up to 329 conditions per place. [2022-11-18 20:47:40,885 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 82 selfloop transitions, 42 changer transitions 36/199 dead transitions. [2022-11-18 20:47:40,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 199 transitions, 1049 flow [2022-11-18 20:47:40,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:47:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 20:47:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1561 transitions. [2022-11-18 20:47:40,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5726338958180485 [2022-11-18 20:47:40,893 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1561 transitions. [2022-11-18 20:47:40,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1561 transitions. [2022-11-18 20:47:40,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:40,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1561 transitions. [2022-11-18 20:47:40,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.827586206896555) internal successors, (1561), 29 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:40,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:40,910 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:40,910 INFO L175 Difference]: Start difference. First operand has 136 places, 103 transitions, 360 flow. Second operand 29 states and 1561 transitions. [2022-11-18 20:47:40,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 199 transitions, 1049 flow [2022-11-18 20:47:40,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 199 transitions, 955 flow, removed 38 selfloop flow, removed 13 redundant places. [2022-11-18 20:47:40,927 INFO L231 Difference]: Finished difference. Result has 156 places, 139 transitions, 637 flow [2022-11-18 20:47:40,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=637, PETRI_PLACES=156, PETRI_TRANSITIONS=139} [2022-11-18 20:47:40,929 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 68 predicate places. [2022-11-18 20:47:40,929 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 139 transitions, 637 flow [2022-11-18 20:47:40,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:40,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:40,931 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:40,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:47:40,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:47:40,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:40,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1215992582, now seen corresponding path program 3 times [2022-11-18 20:47:40,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:40,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103656622] [2022-11-18 20:47:40,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:40,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:41,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:41,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103656622] [2022-11-18 20:47:41,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103656622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:41,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:41,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:47:41,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021448066] [2022-11-18 20:47:41,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:41,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:47:41,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:47:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:47:41,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:47:41,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 139 transitions, 637 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:41,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:41,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:47:41,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:44,534 INFO L130 PetriNetUnfolder]: 240/645 cut-off events. [2022-11-18 20:47:44,534 INFO L131 PetriNetUnfolder]: For 820/820 co-relation queries the response was YES. [2022-11-18 20:47:44,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 645 events. 240/645 cut-off events. For 820/820 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3036 event pairs, 40 based on Foata normal form. 1/643 useless extension candidates. Maximal degree in co-relation 2220. Up to 401 conditions per place. [2022-11-18 20:47:44,544 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 102 selfloop transitions, 56 changer transitions 43/240 dead transitions. [2022-11-18 20:47:44,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 240 transitions, 1595 flow [2022-11-18 20:47:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:47:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 20:47:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2062 transitions. [2022-11-18 20:47:44,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624659028914348 [2022-11-18 20:47:44,552 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2062 transitions. [2022-11-18 20:47:44,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2062 transitions. [2022-11-18 20:47:44,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:44,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2062 transitions. [2022-11-18 20:47:44,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.87179487179487) internal successors, (2062), 39 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:44,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:44,571 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:44,572 INFO L175 Difference]: Start difference. First operand has 156 places, 139 transitions, 637 flow. Second operand 39 states and 2062 transitions. [2022-11-18 20:47:44,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 240 transitions, 1595 flow [2022-11-18 20:47:44,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 240 transitions, 1454 flow, removed 66 selfloop flow, removed 11 redundant places. [2022-11-18 20:47:44,590 INFO L231 Difference]: Finished difference. Result has 201 places, 182 transitions, 1065 flow [2022-11-18 20:47:44,591 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1065, PETRI_PLACES=201, PETRI_TRANSITIONS=182} [2022-11-18 20:47:44,592 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 113 predicate places. [2022-11-18 20:47:44,592 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 182 transitions, 1065 flow [2022-11-18 20:47:44,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:44,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:44,593 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:44,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:47:44,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:47:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1665333946, now seen corresponding path program 4 times [2022-11-18 20:47:44,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:44,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538339678] [2022-11-18 20:47:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:44,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:45,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:45,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538339678] [2022-11-18 20:47:45,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538339678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:45,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:45,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:47:45,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895486907] [2022-11-18 20:47:45,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:45,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:47:45,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:45,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:47:45,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:47:45,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:47:45,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 182 transitions, 1065 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:45,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:45,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:47:45,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:47,509 INFO L130 PetriNetUnfolder]: 238/637 cut-off events. [2022-11-18 20:47:47,509 INFO L131 PetriNetUnfolder]: For 1487/1487 co-relation queries the response was YES. [2022-11-18 20:47:47,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 637 events. 238/637 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2984 event pairs, 3 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 2564. Up to 403 conditions per place. [2022-11-18 20:47:47,519 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 111 selfloop transitions, 53 changer transitions 44/247 dead transitions. [2022-11-18 20:47:47,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 247 transitions, 1855 flow [2022-11-18 20:47:47,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:47:47,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 20:47:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1502 transitions. [2022-11-18 20:47:47,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5706686930091185 [2022-11-18 20:47:47,526 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1502 transitions. [2022-11-18 20:47:47,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1502 transitions. [2022-11-18 20:47:47,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:47,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1502 transitions. [2022-11-18 20:47:47,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 53.642857142857146) internal successors, (1502), 28 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:47,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:47,540 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:47,544 INFO L175 Difference]: Start difference. First operand has 201 places, 182 transitions, 1065 flow. Second operand 28 states and 1502 transitions. [2022-11-18 20:47:47,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 247 transitions, 1855 flow [2022-11-18 20:47:47,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 247 transitions, 1633 flow, removed 89 selfloop flow, removed 18 redundant places. [2022-11-18 20:47:47,564 INFO L231 Difference]: Finished difference. Result has 213 places, 187 transitions, 1114 flow [2022-11-18 20:47:47,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1114, PETRI_PLACES=213, PETRI_TRANSITIONS=187} [2022-11-18 20:47:47,566 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 125 predicate places. [2022-11-18 20:47:47,566 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 187 transitions, 1114 flow [2022-11-18 20:47:47,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:47,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:47,567 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:47,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:47:47,568 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:47:47,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:47,568 INFO L85 PathProgramCache]: Analyzing trace with hash 699227332, now seen corresponding path program 5 times [2022-11-18 20:47:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:47,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127252506] [2022-11-18 20:47:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:47,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:48,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:48,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127252506] [2022-11-18 20:47:48,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127252506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:48,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:48,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:47:48,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147704043] [2022-11-18 20:47:48,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:48,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:47:48,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:48,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:47:48,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:47:48,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:47:48,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 187 transitions, 1114 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:48,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:48,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:47:48,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:50,404 INFO L130 PetriNetUnfolder]: 261/695 cut-off events. [2022-11-18 20:47:50,404 INFO L131 PetriNetUnfolder]: For 1967/1967 co-relation queries the response was YES. [2022-11-18 20:47:50,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2995 conditions, 695 events. 261/695 cut-off events. For 1967/1967 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3364 event pairs, 20 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 2932. Up to 446 conditions per place. [2022-11-18 20:47:50,419 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 131 selfloop transitions, 61 changer transitions 43/274 dead transitions. [2022-11-18 20:47:50,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 274 transitions, 2242 flow [2022-11-18 20:47:50,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:47:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:47:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1861 transitions. [2022-11-18 20:47:50,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5656534954407295 [2022-11-18 20:47:50,424 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1861 transitions. [2022-11-18 20:47:50,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1861 transitions. [2022-11-18 20:47:50,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:50,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1861 transitions. [2022-11-18 20:47:50,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.17142857142857) internal successors, (1861), 35 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:50,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:50,440 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:50,440 INFO L175 Difference]: Start difference. First operand has 213 places, 187 transitions, 1114 flow. Second operand 35 states and 1861 transitions. [2022-11-18 20:47:50,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 274 transitions, 2242 flow [2022-11-18 20:47:50,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 274 transitions, 1993 flow, removed 66 selfloop flow, removed 24 redundant places. [2022-11-18 20:47:50,491 INFO L231 Difference]: Finished difference. Result has 234 places, 215 transitions, 1438 flow [2022-11-18 20:47:50,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1438, PETRI_PLACES=234, PETRI_TRANSITIONS=215} [2022-11-18 20:47:50,493 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 146 predicate places. [2022-11-18 20:47:50,493 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 215 transitions, 1438 flow [2022-11-18 20:47:50,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:50,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:50,494 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:50,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:47:50,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:47:50,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1519473010, now seen corresponding path program 6 times [2022-11-18 20:47:50,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:50,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467969075] [2022-11-18 20:47:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:50,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:51,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:51,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467969075] [2022-11-18 20:47:51,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467969075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:51,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:51,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:47:51,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589865423] [2022-11-18 20:47:51,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:51,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:47:51,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:51,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:47:51,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:47:51,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:47:51,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 215 transitions, 1438 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:51,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:51,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:47:51,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:52,811 INFO L130 PetriNetUnfolder]: 265/713 cut-off events. [2022-11-18 20:47:52,811 INFO L131 PetriNetUnfolder]: For 2399/2399 co-relation queries the response was YES. [2022-11-18 20:47:52,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3176 conditions, 713 events. 265/713 cut-off events. For 2399/2399 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3525 event pairs, 19 based on Foata normal form. 1/712 useless extension candidates. Maximal degree in co-relation 3104. Up to 459 conditions per place. [2022-11-18 20:47:52,822 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 126 selfloop transitions, 74 changer transitions 43/282 dead transitions. [2022-11-18 20:47:52,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 282 transitions, 2337 flow [2022-11-18 20:47:52,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:47:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:47:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1657 transitions. [2022-11-18 20:47:52,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5686341798215512 [2022-11-18 20:47:52,826 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1657 transitions. [2022-11-18 20:47:52,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1657 transitions. [2022-11-18 20:47:52,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:52,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1657 transitions. [2022-11-18 20:47:52,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.45161290322581) internal successors, (1657), 31 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:52,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:52,836 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:52,836 INFO L175 Difference]: Start difference. First operand has 234 places, 215 transitions, 1438 flow. Second operand 31 states and 1657 transitions. [2022-11-18 20:47:52,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 282 transitions, 2337 flow [2022-11-18 20:47:52,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 282 transitions, 2057 flow, removed 109 selfloop flow, removed 23 redundant places. [2022-11-18 20:47:52,860 INFO L231 Difference]: Finished difference. Result has 245 places, 224 transitions, 1536 flow [2022-11-18 20:47:52,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1536, PETRI_PLACES=245, PETRI_TRANSITIONS=224} [2022-11-18 20:47:52,862 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 157 predicate places. [2022-11-18 20:47:52,862 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 224 transitions, 1536 flow [2022-11-18 20:47:52,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:52,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:52,863 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:52,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:47:52,864 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:47:52,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:52,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1541157144, now seen corresponding path program 7 times [2022-11-18 20:47:52,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:52,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431568782] [2022-11-18 20:47:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:52,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:53,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:53,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:53,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431568782] [2022-11-18 20:47:53,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431568782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:53,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:53,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:47:53,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216748653] [2022-11-18 20:47:53,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:53,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:47:53,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:53,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:47:53,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:47:53,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:47:53,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 224 transitions, 1536 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:53,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:53,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:47:53,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:55,216 INFO L130 PetriNetUnfolder]: 264/746 cut-off events. [2022-11-18 20:47:55,216 INFO L131 PetriNetUnfolder]: For 2496/2496 co-relation queries the response was YES. [2022-11-18 20:47:55,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3276 conditions, 746 events. 264/746 cut-off events. For 2496/2496 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3738 event pairs, 27 based on Foata normal form. 1/745 useless extension candidates. Maximal degree in co-relation 3202. Up to 448 conditions per place. [2022-11-18 20:47:55,225 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 124 selfloop transitions, 76 changer transitions 44/283 dead transitions. [2022-11-18 20:47:55,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 283 transitions, 2405 flow [2022-11-18 20:47:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:47:55,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:47:55,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2022-11-18 20:47:55,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689773507206589 [2022-11-18 20:47:55,229 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2022-11-18 20:47:55,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2022-11-18 20:47:55,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:55,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2022-11-18 20:47:55,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:55,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:55,239 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:55,239 INFO L175 Difference]: Start difference. First operand has 245 places, 224 transitions, 1536 flow. Second operand 31 states and 1658 transitions. [2022-11-18 20:47:55,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 283 transitions, 2405 flow [2022-11-18 20:47:55,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 283 transitions, 2194 flow, removed 48 selfloop flow, removed 26 redundant places. [2022-11-18 20:47:55,263 INFO L231 Difference]: Finished difference. Result has 255 places, 224 transitions, 1617 flow [2022-11-18 20:47:55,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1617, PETRI_PLACES=255, PETRI_TRANSITIONS=224} [2022-11-18 20:47:55,264 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 167 predicate places. [2022-11-18 20:47:55,265 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 224 transitions, 1617 flow [2022-11-18 20:47:55,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:55,265 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:55,265 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:55,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:47:55,266 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:47:55,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1783083334, now seen corresponding path program 8 times [2022-11-18 20:47:55,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:55,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772054062] [2022-11-18 20:47:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:55,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:55,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:55,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772054062] [2022-11-18 20:47:55,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772054062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:55,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:55,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:47:55,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138243908] [2022-11-18 20:47:55,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:55,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:47:55,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:47:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:47:55,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:47:55,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 224 transitions, 1617 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:55,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:55,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:47:55,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:57,493 INFO L130 PetriNetUnfolder]: 260/735 cut-off events. [2022-11-18 20:47:57,494 INFO L131 PetriNetUnfolder]: For 2603/2603 co-relation queries the response was YES. [2022-11-18 20:47:57,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 735 events. 260/735 cut-off events. For 2603/2603 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3669 event pairs, 33 based on Foata normal form. 1/734 useless extension candidates. Maximal degree in co-relation 3261. Up to 456 conditions per place. [2022-11-18 20:47:57,505 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 126 selfloop transitions, 73 changer transitions 39/277 dead transitions. [2022-11-18 20:47:57,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 277 transitions, 2429 flow [2022-11-18 20:47:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:47:57,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:47:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1603 transitions. [2022-11-18 20:47:57,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5684397163120567 [2022-11-18 20:47:57,510 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1603 transitions. [2022-11-18 20:47:57,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1603 transitions. [2022-11-18 20:47:57,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:57,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1603 transitions. [2022-11-18 20:47:57,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.43333333333333) internal successors, (1603), 30 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:57,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:57,520 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:57,521 INFO L175 Difference]: Start difference. First operand has 255 places, 224 transitions, 1617 flow. Second operand 30 states and 1603 transitions. [2022-11-18 20:47:57,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 277 transitions, 2429 flow [2022-11-18 20:47:57,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 277 transitions, 2192 flow, removed 35 selfloop flow, removed 29 redundant places. [2022-11-18 20:47:57,549 INFO L231 Difference]: Finished difference. Result has 256 places, 223 transitions, 1629 flow [2022-11-18 20:47:57,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1629, PETRI_PLACES=256, PETRI_TRANSITIONS=223} [2022-11-18 20:47:57,551 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 168 predicate places. [2022-11-18 20:47:57,551 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 223 transitions, 1629 flow [2022-11-18 20:47:57,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:57,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:57,552 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:57,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:47:57,552 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:47:57,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:57,553 INFO L85 PathProgramCache]: Analyzing trace with hash -798716138, now seen corresponding path program 9 times [2022-11-18 20:47:57,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:57,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124982399] [2022-11-18 20:47:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:57,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:58,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:58,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124982399] [2022-11-18 20:47:58,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124982399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:58,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:58,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:47:58,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343977349] [2022-11-18 20:47:58,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:58,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:47:58,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:58,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:47:58,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:47:58,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:47:58,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 223 transitions, 1629 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:58,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:58,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:47:58,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:00,599 INFO L130 PetriNetUnfolder]: 261/743 cut-off events. [2022-11-18 20:48:00,599 INFO L131 PetriNetUnfolder]: For 2956/2956 co-relation queries the response was YES. [2022-11-18 20:48:00,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3420 conditions, 743 events. 261/743 cut-off events. For 2956/2956 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3705 event pairs, 25 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3343. Up to 460 conditions per place. [2022-11-18 20:48:00,610 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 129 selfloop transitions, 94 changer transitions 29/291 dead transitions. [2022-11-18 20:48:00,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 291 transitions, 2637 flow [2022-11-18 20:48:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 20:48:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-18 20:48:00,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2205 transitions. [2022-11-18 20:48:00,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2022-11-18 20:48:00,615 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2205 transitions. [2022-11-18 20:48:00,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2205 transitions. [2022-11-18 20:48:00,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:00,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2205 transitions. [2022-11-18 20:48:00,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.5) internal successors, (2205), 42 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:00,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:00,629 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:00,629 INFO L175 Difference]: Start difference. First operand has 256 places, 223 transitions, 1629 flow. Second operand 42 states and 2205 transitions. [2022-11-18 20:48:00,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 291 transitions, 2637 flow [2022-11-18 20:48:00,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 291 transitions, 2381 flow, removed 68 selfloop flow, removed 28 redundant places. [2022-11-18 20:48:00,659 INFO L231 Difference]: Finished difference. Result has 273 places, 244 transitions, 1891 flow [2022-11-18 20:48:00,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1891, PETRI_PLACES=273, PETRI_TRANSITIONS=244} [2022-11-18 20:48:00,660 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-18 20:48:00,661 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 244 transitions, 1891 flow [2022-11-18 20:48:00,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:00,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:00,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:00,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:48:00,662 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:00,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1392706964, now seen corresponding path program 10 times [2022-11-18 20:48:00,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:00,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502683596] [2022-11-18 20:48:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:00,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:01,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:01,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502683596] [2022-11-18 20:48:01,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502683596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:01,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:01,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:48:01,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467702811] [2022-11-18 20:48:01,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:01,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:48:01,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:48:01,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:48:01,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:01,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 244 transitions, 1891 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:01,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:01,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:01,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:03,061 INFO L130 PetriNetUnfolder]: 261/745 cut-off events. [2022-11-18 20:48:03,062 INFO L131 PetriNetUnfolder]: For 3283/3283 co-relation queries the response was YES. [2022-11-18 20:48:03,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 745 events. 261/745 cut-off events. For 3283/3283 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3789 event pairs, 24 based on Foata normal form. 1/744 useless extension candidates. Maximal degree in co-relation 3521. Up to 477 conditions per place. [2022-11-18 20:48:03,075 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 138 selfloop transitions, 78 changer transitions 32/287 dead transitions. [2022-11-18 20:48:03,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 287 transitions, 2626 flow [2022-11-18 20:48:03,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:48:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:48:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1745 transitions. [2022-11-18 20:48:03,079 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5625402965828498 [2022-11-18 20:48:03,079 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1745 transitions. [2022-11-18 20:48:03,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1745 transitions. [2022-11-18 20:48:03,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:03,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1745 transitions. [2022-11-18 20:48:03,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.878787878787875) internal successors, (1745), 33 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:03,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:03,090 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:03,090 INFO L175 Difference]: Start difference. First operand has 273 places, 244 transitions, 1891 flow. Second operand 33 states and 1745 transitions. [2022-11-18 20:48:03,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 287 transitions, 2626 flow [2022-11-18 20:48:03,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 287 transitions, 2308 flow, removed 96 selfloop flow, removed 27 redundant places. [2022-11-18 20:48:03,125 INFO L231 Difference]: Finished difference. Result has 280 places, 241 transitions, 1804 flow [2022-11-18 20:48:03,127 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1804, PETRI_PLACES=280, PETRI_TRANSITIONS=241} [2022-11-18 20:48:03,129 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 192 predicate places. [2022-11-18 20:48:03,129 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 241 transitions, 1804 flow [2022-11-18 20:48:03,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:03,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:03,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:03,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:48:03,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:03,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1406267310, now seen corresponding path program 11 times [2022-11-18 20:48:03,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:03,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361322369] [2022-11-18 20:48:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:03,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:03,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:03,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361322369] [2022-11-18 20:48:03,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361322369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:03,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:03,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:48:03,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921732527] [2022-11-18 20:48:03,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:03,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:48:03,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:48:03,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:48:03,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:03,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 241 transitions, 1804 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:03,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:03,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:03,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:05,353 INFO L130 PetriNetUnfolder]: 251/705 cut-off events. [2022-11-18 20:48:05,353 INFO L131 PetriNetUnfolder]: For 2893/2893 co-relation queries the response was YES. [2022-11-18 20:48:05,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3435 conditions, 705 events. 251/705 cut-off events. For 2893/2893 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3435 event pairs, 22 based on Foata normal form. 1/705 useless extension candidates. Maximal degree in co-relation 3351. Up to 465 conditions per place. [2022-11-18 20:48:05,364 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 134 selfloop transitions, 75 changer transitions 26/274 dead transitions. [2022-11-18 20:48:05,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 274 transitions, 2427 flow [2022-11-18 20:48:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:48:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:48:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1639 transitions. [2022-11-18 20:48:05,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624571036376115 [2022-11-18 20:48:05,368 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1639 transitions. [2022-11-18 20:48:05,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1639 transitions. [2022-11-18 20:48:05,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:05,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1639 transitions. [2022-11-18 20:48:05,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.87096774193548) internal successors, (1639), 31 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,376 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,377 INFO L175 Difference]: Start difference. First operand has 280 places, 241 transitions, 1804 flow. Second operand 31 states and 1639 transitions. [2022-11-18 20:48:05,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 274 transitions, 2427 flow [2022-11-18 20:48:05,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 274 transitions, 2189 flow, removed 25 selfloop flow, removed 33 redundant places. [2022-11-18 20:48:05,407 INFO L231 Difference]: Finished difference. Result has 274 places, 234 transitions, 1729 flow [2022-11-18 20:48:05,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1729, PETRI_PLACES=274, PETRI_TRANSITIONS=234} [2022-11-18 20:48:05,408 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 186 predicate places. [2022-11-18 20:48:05,409 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 234 transitions, 1729 flow [2022-11-18 20:48:05,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:05,409 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:05,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:48:05,410 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:05,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:05,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1692710944, now seen corresponding path program 12 times [2022-11-18 20:48:05,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:05,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738883520] [2022-11-18 20:48:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:05,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:06,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:06,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738883520] [2022-11-18 20:48:06,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738883520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:06,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:06,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:48:06,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256546583] [2022-11-18 20:48:06,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:06,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:48:06,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:06,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:48:06,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:48:06,149 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:06,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 234 transitions, 1729 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:06,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:06,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:06,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:07,707 INFO L130 PetriNetUnfolder]: 244/700 cut-off events. [2022-11-18 20:48:07,709 INFO L131 PetriNetUnfolder]: For 2595/2595 co-relation queries the response was YES. [2022-11-18 20:48:07,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 700 events. 244/700 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3348 event pairs, 32 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 3212. Up to 460 conditions per place. [2022-11-18 20:48:07,720 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 130 selfloop transitions, 75 changer transitions 19/263 dead transitions. [2022-11-18 20:48:07,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 263 transitions, 2301 flow [2022-11-18 20:48:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:48:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:48:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1633 transitions. [2022-11-18 20:48:07,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.560398078242965 [2022-11-18 20:48:07,728 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1633 transitions. [2022-11-18 20:48:07,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1633 transitions. [2022-11-18 20:48:07,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:07,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1633 transitions. [2022-11-18 20:48:07,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.67741935483871) internal successors, (1633), 31 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:07,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:07,739 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:07,739 INFO L175 Difference]: Start difference. First operand has 274 places, 234 transitions, 1729 flow. Second operand 31 states and 1633 transitions. [2022-11-18 20:48:07,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 263 transitions, 2301 flow [2022-11-18 20:48:07,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 263 transitions, 2097 flow, removed 17 selfloop flow, removed 33 redundant places. [2022-11-18 20:48:07,771 INFO L231 Difference]: Finished difference. Result has 267 places, 231 transitions, 1700 flow [2022-11-18 20:48:07,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1700, PETRI_PLACES=267, PETRI_TRANSITIONS=231} [2022-11-18 20:48:07,774 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 179 predicate places. [2022-11-18 20:48:07,775 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 231 transitions, 1700 flow [2022-11-18 20:48:07,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:07,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:07,775 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:07,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:48:07,776 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:07,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:07,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1360263200, now seen corresponding path program 13 times [2022-11-18 20:48:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:07,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063213051] [2022-11-18 20:48:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:07,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:08,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:08,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063213051] [2022-11-18 20:48:08,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063213051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:08,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:08,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:48:08,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287606836] [2022-11-18 20:48:08,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:08,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:48:08,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:08,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:48:08,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:48:08,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:08,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 231 transitions, 1700 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:08,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:08,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:08,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:10,005 INFO L130 PetriNetUnfolder]: 238/686 cut-off events. [2022-11-18 20:48:10,005 INFO L131 PetriNetUnfolder]: For 2359/2359 co-relation queries the response was YES. [2022-11-18 20:48:10,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 686 events. 238/686 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3219 event pairs, 35 based on Foata normal form. 1/685 useless extension candidates. Maximal degree in co-relation 3104. Up to 452 conditions per place. [2022-11-18 20:48:10,014 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 123 selfloop transitions, 65 changer transitions 26/253 dead transitions. [2022-11-18 20:48:10,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 253 transitions, 2225 flow [2022-11-18 20:48:10,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:48:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:48:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1677 transitions. [2022-11-18 20:48:10,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5575132978723404 [2022-11-18 20:48:10,017 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1677 transitions. [2022-11-18 20:48:10,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1677 transitions. [2022-11-18 20:48:10,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:10,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1677 transitions. [2022-11-18 20:48:10,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.40625) internal successors, (1677), 32 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:10,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:10,026 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:10,026 INFO L175 Difference]: Start difference. First operand has 267 places, 231 transitions, 1700 flow. Second operand 32 states and 1677 transitions. [2022-11-18 20:48:10,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 253 transitions, 2225 flow [2022-11-18 20:48:10,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 253 transitions, 2037 flow, removed 9 selfloop flow, removed 31 redundant places. [2022-11-18 20:48:10,053 INFO L231 Difference]: Finished difference. Result has 264 places, 215 transitions, 1558 flow [2022-11-18 20:48:10,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1558, PETRI_PLACES=264, PETRI_TRANSITIONS=215} [2022-11-18 20:48:10,054 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 176 predicate places. [2022-11-18 20:48:10,054 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 215 transitions, 1558 flow [2022-11-18 20:48:10,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:10,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:10,055 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:10,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:48:10,055 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:10,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:10,056 INFO L85 PathProgramCache]: Analyzing trace with hash 6627344, now seen corresponding path program 14 times [2022-11-18 20:48:10,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:10,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553445976] [2022-11-18 20:48:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:10,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:10,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553445976] [2022-11-18 20:48:10,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553445976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:10,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:10,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:48:10,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513569185] [2022-11-18 20:48:10,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:10,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:48:10,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:10,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:48:10,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:48:10,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:10,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 215 transitions, 1558 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:10,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:10,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:10,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:12,394 INFO L130 PetriNetUnfolder]: 260/745 cut-off events. [2022-11-18 20:48:12,394 INFO L131 PetriNetUnfolder]: For 2571/2571 co-relation queries the response was YES. [2022-11-18 20:48:12,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 745 events. 260/745 cut-off events. For 2571/2571 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3750 event pairs, 38 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3287. Up to 436 conditions per place. [2022-11-18 20:48:12,402 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 120 selfloop transitions, 83 changer transitions 42/284 dead transitions. [2022-11-18 20:48:12,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 284 transitions, 2512 flow [2022-11-18 20:48:12,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:48:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:48:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1861 transitions. [2022-11-18 20:48:12,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5656534954407295 [2022-11-18 20:48:12,406 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1861 transitions. [2022-11-18 20:48:12,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1861 transitions. [2022-11-18 20:48:12,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:12,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1861 transitions. [2022-11-18 20:48:12,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.17142857142857) internal successors, (1861), 35 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:12,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:12,415 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:12,416 INFO L175 Difference]: Start difference. First operand has 264 places, 215 transitions, 1558 flow. Second operand 35 states and 1861 transitions. [2022-11-18 20:48:12,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 284 transitions, 2512 flow [2022-11-18 20:48:12,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 2221 flow, removed 45 selfloop flow, removed 29 redundant places. [2022-11-18 20:48:12,443 INFO L231 Difference]: Finished difference. Result has 256 places, 224 transitions, 1654 flow [2022-11-18 20:48:12,443 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1654, PETRI_PLACES=256, PETRI_TRANSITIONS=224} [2022-11-18 20:48:12,444 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 168 predicate places. [2022-11-18 20:48:12,444 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 224 transitions, 1654 flow [2022-11-18 20:48:12,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:12,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:12,445 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:12,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:48:12,445 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:12,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1409575526, now seen corresponding path program 15 times [2022-11-18 20:48:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:12,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447870086] [2022-11-18 20:48:12,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:12,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:13,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:13,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447870086] [2022-11-18 20:48:13,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447870086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:13,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:13,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:48:13,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333259221] [2022-11-18 20:48:13,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:13,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:48:13,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:13,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:48:13,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:13,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:13,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 224 transitions, 1654 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:13,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:13,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:13,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:14,726 INFO L130 PetriNetUnfolder]: 272/762 cut-off events. [2022-11-18 20:48:14,726 INFO L131 PetriNetUnfolder]: For 3720/3720 co-relation queries the response was YES. [2022-11-18 20:48:14,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 762 events. 272/762 cut-off events. For 3720/3720 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3706 event pairs, 24 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 3596. Up to 458 conditions per place. [2022-11-18 20:48:14,738 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 138 selfloop transitions, 101 changer transitions 22/300 dead transitions. [2022-11-18 20:48:14,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 300 transitions, 2850 flow [2022-11-18 20:48:14,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:48:14,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:48:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1818 transitions. [2022-11-18 20:48:14,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5688360450563203 [2022-11-18 20:48:14,742 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1818 transitions. [2022-11-18 20:48:14,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1818 transitions. [2022-11-18 20:48:14,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:14,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1818 transitions. [2022-11-18 20:48:14,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.470588235294116) internal successors, (1818), 34 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,751 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,752 INFO L175 Difference]: Start difference. First operand has 256 places, 224 transitions, 1654 flow. Second operand 34 states and 1818 transitions. [2022-11-18 20:48:14,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 300 transitions, 2850 flow [2022-11-18 20:48:14,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 300 transitions, 2572 flow, removed 73 selfloop flow, removed 29 redundant places. [2022-11-18 20:48:14,786 INFO L231 Difference]: Finished difference. Result has 260 places, 251 transitions, 2016 flow [2022-11-18 20:48:14,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2016, PETRI_PLACES=260, PETRI_TRANSITIONS=251} [2022-11-18 20:48:14,787 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 172 predicate places. [2022-11-18 20:48:14,787 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 251 transitions, 2016 flow [2022-11-18 20:48:14,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:14,788 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:14,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:48:14,788 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:14,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:14,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2084111022, now seen corresponding path program 16 times [2022-11-18 20:48:14,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:14,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098078836] [2022-11-18 20:48:14,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:14,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:15,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:15,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098078836] [2022-11-18 20:48:15,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098078836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:15,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:15,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:48:15,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338608476] [2022-11-18 20:48:15,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:15,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:48:15,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:15,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:48:15,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:48:15,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:15,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 251 transitions, 2016 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:15,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:15,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:15,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:16,866 INFO L130 PetriNetUnfolder]: 280/785 cut-off events. [2022-11-18 20:48:16,866 INFO L131 PetriNetUnfolder]: For 3938/3938 co-relation queries the response was YES. [2022-11-18 20:48:16,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3914 conditions, 785 events. 280/785 cut-off events. For 3938/3938 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3919 event pairs, 25 based on Foata normal form. 1/783 useless extension candidates. Maximal degree in co-relation 3839. Up to 487 conditions per place. [2022-11-18 20:48:16,875 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 151 selfloop transitions, 89 changer transitions 29/308 dead transitions. [2022-11-18 20:48:16,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 308 transitions, 3040 flow [2022-11-18 20:48:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:48:16,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 20:48:16,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1560 transitions. [2022-11-18 20:48:16,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5722670579603815 [2022-11-18 20:48:16,878 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1560 transitions. [2022-11-18 20:48:16,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1560 transitions. [2022-11-18 20:48:16,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:16,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1560 transitions. [2022-11-18 20:48:16,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.793103448275865) internal successors, (1560), 29 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,886 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,887 INFO L175 Difference]: Start difference. First operand has 260 places, 251 transitions, 2016 flow. Second operand 29 states and 1560 transitions. [2022-11-18 20:48:16,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 308 transitions, 3040 flow [2022-11-18 20:48:16,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 308 transitions, 2719 flow, removed 122 selfloop flow, removed 14 redundant places. [2022-11-18 20:48:16,928 INFO L231 Difference]: Finished difference. Result has 278 places, 259 transitions, 2077 flow [2022-11-18 20:48:16,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2077, PETRI_PLACES=278, PETRI_TRANSITIONS=259} [2022-11-18 20:48:16,929 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 190 predicate places. [2022-11-18 20:48:16,929 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 259 transitions, 2077 flow [2022-11-18 20:48:16,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:16,930 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:16,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:48:16,931 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:16,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2051877010, now seen corresponding path program 17 times [2022-11-18 20:48:16,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:16,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892965440] [2022-11-18 20:48:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:16,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:17,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:17,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892965440] [2022-11-18 20:48:17,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892965440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:17,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:17,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:48:17,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363011205] [2022-11-18 20:48:17,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:17,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:48:17,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:17,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:48:17,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:17,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:17,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 259 transitions, 2077 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:17,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:17,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:17,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:19,028 INFO L130 PetriNetUnfolder]: 278/784 cut-off events. [2022-11-18 20:48:19,028 INFO L131 PetriNetUnfolder]: For 4212/4212 co-relation queries the response was YES. [2022-11-18 20:48:19,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 784 events. 278/784 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3944 event pairs, 25 based on Foata normal form. 1/782 useless extension candidates. Maximal degree in co-relation 3914. Up to 483 conditions per place. [2022-11-18 20:48:19,035 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 149 selfloop transitions, 85 changer transitions 35/308 dead transitions. [2022-11-18 20:48:19,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 308 transitions, 3007 flow [2022-11-18 20:48:19,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:48:19,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:48:19,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2022-11-18 20:48:19,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689773507206589 [2022-11-18 20:48:19,039 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2022-11-18 20:48:19,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2022-11-18 20:48:19,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:19,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2022-11-18 20:48:19,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:19,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:19,046 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:19,047 INFO L175 Difference]: Start difference. First operand has 278 places, 259 transitions, 2077 flow. Second operand 31 states and 1658 transitions. [2022-11-18 20:48:19,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 308 transitions, 3007 flow [2022-11-18 20:48:19,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 308 transitions, 2721 flow, removed 64 selfloop flow, removed 27 redundant places. [2022-11-18 20:48:19,084 INFO L231 Difference]: Finished difference. Result has 286 places, 256 transitions, 2053 flow [2022-11-18 20:48:19,085 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2053, PETRI_PLACES=286, PETRI_TRANSITIONS=256} [2022-11-18 20:48:19,085 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 198 predicate places. [2022-11-18 20:48:19,086 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 256 transitions, 2053 flow [2022-11-18 20:48:19,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:19,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:19,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:19,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:48:19,087 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:19,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:19,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1422442310, now seen corresponding path program 18 times [2022-11-18 20:48:19,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:19,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557755901] [2022-11-18 20:48:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:19,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:19,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:19,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557755901] [2022-11-18 20:48:19,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557755901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:19,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:19,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:48:19,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606165382] [2022-11-18 20:48:19,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:19,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:48:19,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:19,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:48:19,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:19,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:19,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 256 transitions, 2053 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:19,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:19,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:19,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:21,281 INFO L130 PetriNetUnfolder]: 274/768 cut-off events. [2022-11-18 20:48:21,281 INFO L131 PetriNetUnfolder]: For 3948/3948 co-relation queries the response was YES. [2022-11-18 20:48:21,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 768 events. 274/768 cut-off events. For 3948/3948 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3810 event pairs, 24 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 3868. Up to 481 conditions per place. [2022-11-18 20:48:21,290 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 92 changer transitions 26/304 dead transitions. [2022-11-18 20:48:21,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 304 transitions, 2973 flow [2022-11-18 20:48:21,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:48:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:48:21,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1606 transitions. [2022-11-18 20:48:21,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5695035460992908 [2022-11-18 20:48:21,292 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1606 transitions. [2022-11-18 20:48:21,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1606 transitions. [2022-11-18 20:48:21,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:21,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1606 transitions. [2022-11-18 20:48:21,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.53333333333333) internal successors, (1606), 30 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:21,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:21,299 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:21,300 INFO L175 Difference]: Start difference. First operand has 286 places, 256 transitions, 2053 flow. Second operand 30 states and 1606 transitions. [2022-11-18 20:48:21,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 304 transitions, 2973 flow [2022-11-18 20:48:21,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 304 transitions, 2719 flow, removed 24 selfloop flow, removed 28 redundant places. [2022-11-18 20:48:21,338 INFO L231 Difference]: Finished difference. Result has 286 places, 259 transitions, 2104 flow [2022-11-18 20:48:21,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2104, PETRI_PLACES=286, PETRI_TRANSITIONS=259} [2022-11-18 20:48:21,339 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 198 predicate places. [2022-11-18 20:48:21,339 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 259 transitions, 2104 flow [2022-11-18 20:48:21,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:21,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:21,340 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:21,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:48:21,340 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:21,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:21,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2093389318, now seen corresponding path program 19 times [2022-11-18 20:48:21,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:21,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726799109] [2022-11-18 20:48:21,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:21,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:21,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:21,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726799109] [2022-11-18 20:48:21,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726799109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:21,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:21,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:48:21,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099527123] [2022-11-18 20:48:21,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:21,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:48:21,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:21,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:48:21,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:21,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:21,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 259 transitions, 2104 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:21,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:21,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:21,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:23,357 INFO L130 PetriNetUnfolder]: 280/787 cut-off events. [2022-11-18 20:48:23,357 INFO L131 PetriNetUnfolder]: For 4356/4356 co-relation queries the response was YES. [2022-11-18 20:48:23,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4093 conditions, 787 events. 280/787 cut-off events. For 4356/4356 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3991 event pairs, 26 based on Foata normal form. 1/784 useless extension candidates. Maximal degree in co-relation 4008. Up to 511 conditions per place. [2022-11-18 20:48:23,366 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 165 selfloop transitions, 78 changer transitions 30/312 dead transitions. [2022-11-18 20:48:23,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 312 transitions, 3125 flow [2022-11-18 20:48:23,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:48:23,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:48:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1651 transitions. [2022-11-18 20:48:23,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5665751544269046 [2022-11-18 20:48:23,369 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1651 transitions. [2022-11-18 20:48:23,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1651 transitions. [2022-11-18 20:48:23,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:23,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1651 transitions. [2022-11-18 20:48:23,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.25806451612903) internal successors, (1651), 31 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:23,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:23,376 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:23,377 INFO L175 Difference]: Start difference. First operand has 286 places, 259 transitions, 2104 flow. Second operand 31 states and 1651 transitions. [2022-11-18 20:48:23,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 312 transitions, 3125 flow [2022-11-18 20:48:23,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 312 transitions, 2890 flow, removed 47 selfloop flow, removed 26 redundant places. [2022-11-18 20:48:23,415 INFO L231 Difference]: Finished difference. Result has 297 places, 266 transitions, 2244 flow [2022-11-18 20:48:23,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2244, PETRI_PLACES=297, PETRI_TRANSITIONS=266} [2022-11-18 20:48:23,416 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 209 predicate places. [2022-11-18 20:48:23,416 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 266 transitions, 2244 flow [2022-11-18 20:48:23,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:23,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:23,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:23,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:48:23,417 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:23,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1511959520, now seen corresponding path program 20 times [2022-11-18 20:48:23,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:23,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448247073] [2022-11-18 20:48:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:24,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:24,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448247073] [2022-11-18 20:48:24,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448247073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:24,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:24,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:48:24,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850296770] [2022-11-18 20:48:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:24,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:48:24,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:24,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:48:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:48:24,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:24,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 266 transitions, 2244 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:24,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:24,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:24,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:25,651 INFO L130 PetriNetUnfolder]: 278/791 cut-off events. [2022-11-18 20:48:25,652 INFO L131 PetriNetUnfolder]: For 4502/4502 co-relation queries the response was YES. [2022-11-18 20:48:25,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 791 events. 278/791 cut-off events. For 4502/4502 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4037 event pairs, 23 based on Foata normal form. 1/789 useless extension candidates. Maximal degree in co-relation 4069. Up to 503 conditions per place. [2022-11-18 20:48:25,659 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 155 selfloop transitions, 86 changer transitions 30/310 dead transitions. [2022-11-18 20:48:25,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 310 transitions, 3174 flow [2022-11-18 20:48:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:48:25,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:48:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1701 transitions. [2022-11-18 20:48:25,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5654920212765957 [2022-11-18 20:48:25,662 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1701 transitions. [2022-11-18 20:48:25,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1701 transitions. [2022-11-18 20:48:25,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:25,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1701 transitions. [2022-11-18 20:48:25,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.15625) internal successors, (1701), 32 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:25,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:25,670 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:25,670 INFO L175 Difference]: Start difference. First operand has 297 places, 266 transitions, 2244 flow. Second operand 32 states and 1701 transitions. [2022-11-18 20:48:25,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 310 transitions, 3174 flow [2022-11-18 20:48:25,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 310 transitions, 2977 flow, removed 39 selfloop flow, removed 26 redundant places. [2022-11-18 20:48:25,711 INFO L231 Difference]: Finished difference. Result has 304 places, 264 transitions, 2304 flow [2022-11-18 20:48:25,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2304, PETRI_PLACES=304, PETRI_TRANSITIONS=264} [2022-11-18 20:48:25,712 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 216 predicate places. [2022-11-18 20:48:25,712 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 264 transitions, 2304 flow [2022-11-18 20:48:25,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:25,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:25,713 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:25,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:48:25,713 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:25,714 INFO L85 PathProgramCache]: Analyzing trace with hash -462340898, now seen corresponding path program 21 times [2022-11-18 20:48:25,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:25,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071176278] [2022-11-18 20:48:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:25,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:26,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:26,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071176278] [2022-11-18 20:48:26,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071176278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:26,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:26,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:48:26,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451357038] [2022-11-18 20:48:26,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:26,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:48:26,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:26,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:48:26,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:26,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:26,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 264 transitions, 2304 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:26,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:26,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:26,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:27,798 INFO L130 PetriNetUnfolder]: 274/774 cut-off events. [2022-11-18 20:48:27,798 INFO L131 PetriNetUnfolder]: For 4678/4678 co-relation queries the response was YES. [2022-11-18 20:48:27,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 774 events. 274/774 cut-off events. For 4678/4678 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3874 event pairs, 21 based on Foata normal form. 1/772 useless extension candidates. Maximal degree in co-relation 4077. Up to 472 conditions per place. [2022-11-18 20:48:27,807 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 151 selfloop transitions, 98 changer transitions 26/314 dead transitions. [2022-11-18 20:48:27,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 314 transitions, 3258 flow [2022-11-18 20:48:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:48:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:48:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2022-11-18 20:48:27,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693205216197667 [2022-11-18 20:48:27,810 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2022-11-18 20:48:27,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2022-11-18 20:48:27,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:27,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2022-11-18 20:48:27,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:27,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:27,818 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:27,818 INFO L175 Difference]: Start difference. First operand has 304 places, 264 transitions, 2304 flow. Second operand 31 states and 1659 transitions. [2022-11-18 20:48:27,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 314 transitions, 3258 flow [2022-11-18 20:48:27,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 314 transitions, 3017 flow, removed 49 selfloop flow, removed 30 redundant places. [2022-11-18 20:48:27,865 INFO L231 Difference]: Finished difference. Result has 305 places, 267 transitions, 2388 flow [2022-11-18 20:48:27,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2388, PETRI_PLACES=305, PETRI_TRANSITIONS=267} [2022-11-18 20:48:27,866 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 217 predicate places. [2022-11-18 20:48:27,866 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 267 transitions, 2388 flow [2022-11-18 20:48:27,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:27,866 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:27,867 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:27,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:48:27,867 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:27,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:27,868 INFO L85 PathProgramCache]: Analyzing trace with hash 51004620, now seen corresponding path program 22 times [2022-11-18 20:48:27,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:27,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549251801] [2022-11-18 20:48:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:27,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:28,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:28,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549251801] [2022-11-18 20:48:28,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549251801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:28,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:28,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:48:28,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279367154] [2022-11-18 20:48:28,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:28,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:48:28,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:28,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:48:28,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:48:28,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:28,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 267 transitions, 2388 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:28,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:28,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:28,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:30,345 INFO L130 PetriNetUnfolder]: 275/773 cut-off events. [2022-11-18 20:48:30,345 INFO L131 PetriNetUnfolder]: For 4201/4201 co-relation queries the response was YES. [2022-11-18 20:48:30,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 773 events. 275/773 cut-off events. For 4201/4201 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3859 event pairs, 22 based on Foata normal form. 1/771 useless extension candidates. Maximal degree in co-relation 4133. Up to 503 conditions per place. [2022-11-18 20:48:30,352 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 158 selfloop transitions, 86 changer transitions 29/312 dead transitions. [2022-11-18 20:48:30,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 312 transitions, 3292 flow [2022-11-18 20:48:30,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:48:30,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:48:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1848 transitions. [2022-11-18 20:48:30,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5617021276595745 [2022-11-18 20:48:30,356 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1848 transitions. [2022-11-18 20:48:30,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1848 transitions. [2022-11-18 20:48:30,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:30,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1848 transitions. [2022-11-18 20:48:30,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.8) internal successors, (1848), 35 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,363 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,363 INFO L175 Difference]: Start difference. First operand has 305 places, 267 transitions, 2388 flow. Second operand 35 states and 1848 transitions. [2022-11-18 20:48:30,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 312 transitions, 3292 flow [2022-11-18 20:48:30,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 312 transitions, 3022 flow, removed 33 selfloop flow, removed 28 redundant places. [2022-11-18 20:48:30,401 INFO L231 Difference]: Finished difference. Result has 313 places, 267 transitions, 2371 flow [2022-11-18 20:48:30,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2371, PETRI_PLACES=313, PETRI_TRANSITIONS=267} [2022-11-18 20:48:30,402 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 225 predicate places. [2022-11-18 20:48:30,402 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 267 transitions, 2371 flow [2022-11-18 20:48:30,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:30,402 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:30,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:48:30,402 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:30,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1553455864, now seen corresponding path program 23 times [2022-11-18 20:48:30,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:30,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234894319] [2022-11-18 20:48:30,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:30,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:31,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:31,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234894319] [2022-11-18 20:48:31,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234894319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:31,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:31,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:48:31,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323750166] [2022-11-18 20:48:31,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:31,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:48:31,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:31,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:48:31,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:31,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:31,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 267 transitions, 2371 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:31,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:31,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:31,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:32,555 INFO L130 PetriNetUnfolder]: 274/770 cut-off events. [2022-11-18 20:48:32,555 INFO L131 PetriNetUnfolder]: For 4314/4314 co-relation queries the response was YES. [2022-11-18 20:48:32,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 770 events. 274/770 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3821 event pairs, 18 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 4113. Up to 492 conditions per place. [2022-11-18 20:48:32,563 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 158 selfloop transitions, 96 changer transitions 21/314 dead transitions. [2022-11-18 20:48:32,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 314 transitions, 3306 flow [2022-11-18 20:48:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:48:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:48:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1706 transitions. [2022-11-18 20:48:32,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.567154255319149 [2022-11-18 20:48:32,573 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1706 transitions. [2022-11-18 20:48:32,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1706 transitions. [2022-11-18 20:48:32,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:32,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1706 transitions. [2022-11-18 20:48:32,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.3125) internal successors, (1706), 32 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:32,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:32,580 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:32,580 INFO L175 Difference]: Start difference. First operand has 313 places, 267 transitions, 2371 flow. Second operand 32 states and 1706 transitions. [2022-11-18 20:48:32,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 314 transitions, 3306 flow [2022-11-18 20:48:32,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 314 transitions, 2999 flow, removed 43 selfloop flow, removed 31 redundant places. [2022-11-18 20:48:32,625 INFO L231 Difference]: Finished difference. Result has 314 places, 273 transitions, 2425 flow [2022-11-18 20:48:32,626 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2425, PETRI_PLACES=314, PETRI_TRANSITIONS=273} [2022-11-18 20:48:32,627 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 226 predicate places. [2022-11-18 20:48:32,627 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 273 transitions, 2425 flow [2022-11-18 20:48:32,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:32,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:32,628 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:32,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:48:32,630 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:32,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:32,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1348201146, now seen corresponding path program 24 times [2022-11-18 20:48:32,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:32,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306035462] [2022-11-18 20:48:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:32,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:33,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:33,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306035462] [2022-11-18 20:48:33,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306035462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:33,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:33,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:48:33,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248925105] [2022-11-18 20:48:33,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:33,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:48:33,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:33,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:48:33,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:33,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:33,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 273 transitions, 2425 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:33,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:33,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:33,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:34,739 INFO L130 PetriNetUnfolder]: 267/758 cut-off events. [2022-11-18 20:48:34,739 INFO L131 PetriNetUnfolder]: For 4154/4154 co-relation queries the response was YES. [2022-11-18 20:48:34,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 758 events. 267/758 cut-off events. For 4154/4154 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3769 event pairs, 19 based on Foata normal form. 1/756 useless extension candidates. Maximal degree in co-relation 4036. Up to 496 conditions per place. [2022-11-18 20:48:34,746 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 159 selfloop transitions, 90 changer transitions 18/306 dead transitions. [2022-11-18 20:48:34,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 306 transitions, 3149 flow [2022-11-18 20:48:34,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:48:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:48:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1597 transitions. [2022-11-18 20:48:34,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5663120567375887 [2022-11-18 20:48:34,748 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1597 transitions. [2022-11-18 20:48:34,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1597 transitions. [2022-11-18 20:48:34,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:34,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1597 transitions. [2022-11-18 20:48:34,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.233333333333334) internal successors, (1597), 30 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:34,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:34,754 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:34,754 INFO L175 Difference]: Start difference. First operand has 314 places, 273 transitions, 2425 flow. Second operand 30 states and 1597 transitions. [2022-11-18 20:48:34,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 306 transitions, 3149 flow [2022-11-18 20:48:34,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 306 transitions, 2963 flow, removed 30 selfloop flow, removed 25 redundant places. [2022-11-18 20:48:34,790 INFO L231 Difference]: Finished difference. Result has 319 places, 270 transitions, 2436 flow [2022-11-18 20:48:34,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2436, PETRI_PLACES=319, PETRI_TRANSITIONS=270} [2022-11-18 20:48:34,791 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 231 predicate places. [2022-11-18 20:48:34,791 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 270 transitions, 2436 flow [2022-11-18 20:48:34,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:34,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:34,792 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:34,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:48:34,793 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:34,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:34,793 INFO L85 PathProgramCache]: Analyzing trace with hash 859753864, now seen corresponding path program 25 times [2022-11-18 20:48:34,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:34,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126448291] [2022-11-18 20:48:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:34,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:35,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:35,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126448291] [2022-11-18 20:48:35,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126448291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:35,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:35,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:48:35,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208631877] [2022-11-18 20:48:35,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:35,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:48:35,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:35,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:48:35,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:48:35,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:35,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 270 transitions, 2436 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:35,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:35,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:35,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:37,187 INFO L130 PetriNetUnfolder]: 268/769 cut-off events. [2022-11-18 20:48:37,187 INFO L131 PetriNetUnfolder]: For 4419/4419 co-relation queries the response was YES. [2022-11-18 20:48:37,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4238 conditions, 769 events. 268/769 cut-off events. For 4419/4419 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3855 event pairs, 21 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 4144. Up to 505 conditions per place. [2022-11-18 20:48:37,198 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 162 selfloop transitions, 90 changer transitions 15/306 dead transitions. [2022-11-18 20:48:37,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 306 transitions, 3292 flow [2022-11-18 20:48:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:48:37,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:48:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1892 transitions. [2022-11-18 20:48:37,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591016548463357 [2022-11-18 20:48:37,203 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1892 transitions. [2022-11-18 20:48:37,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1892 transitions. [2022-11-18 20:48:37,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:37,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1892 transitions. [2022-11-18 20:48:37,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.55555555555556) internal successors, (1892), 36 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:37,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:37,210 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:37,211 INFO L175 Difference]: Start difference. First operand has 319 places, 270 transitions, 2436 flow. Second operand 36 states and 1892 transitions. [2022-11-18 20:48:37,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 306 transitions, 3292 flow [2022-11-18 20:48:37,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 306 transitions, 3036 flow, removed 19 selfloop flow, removed 31 redundant places. [2022-11-18 20:48:37,258 INFO L231 Difference]: Finished difference. Result has 325 places, 275 transitions, 2513 flow [2022-11-18 20:48:37,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2513, PETRI_PLACES=325, PETRI_TRANSITIONS=275} [2022-11-18 20:48:37,259 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-18 20:48:37,259 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 275 transitions, 2513 flow [2022-11-18 20:48:37,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:37,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:37,260 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:37,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 20:48:37,260 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:37,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:37,261 INFO L85 PathProgramCache]: Analyzing trace with hash 671989096, now seen corresponding path program 26 times [2022-11-18 20:48:37,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:37,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382332563] [2022-11-18 20:48:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:37,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:37,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:37,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382332563] [2022-11-18 20:48:37,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382332563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:37,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:37,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:48:37,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243192166] [2022-11-18 20:48:37,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:37,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:48:37,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:37,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:48:37,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:48:37,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:37,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 275 transitions, 2513 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:37,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:37,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:37,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:39,538 INFO L130 PetriNetUnfolder]: 265/772 cut-off events. [2022-11-18 20:48:39,539 INFO L131 PetriNetUnfolder]: For 4743/4743 co-relation queries the response was YES. [2022-11-18 20:48:39,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 772 events. 265/772 cut-off events. For 4743/4743 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3889 event pairs, 21 based on Foata normal form. 1/770 useless extension candidates. Maximal degree in co-relation 4158. Up to 505 conditions per place. [2022-11-18 20:48:39,547 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 161 selfloop transitions, 83 changer transitions 19/302 dead transitions. [2022-11-18 20:48:39,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 302 transitions, 3200 flow [2022-11-18 20:48:39,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:48:39,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:48:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1739 transitions. [2022-11-18 20:48:39,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2022-11-18 20:48:39,553 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1739 transitions. [2022-11-18 20:48:39,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1739 transitions. [2022-11-18 20:48:39,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:39,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1739 transitions. [2022-11-18 20:48:39,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.696969696969695) internal successors, (1739), 33 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:39,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:39,560 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:39,560 INFO L175 Difference]: Start difference. First operand has 325 places, 275 transitions, 2513 flow. Second operand 33 states and 1739 transitions. [2022-11-18 20:48:39,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 302 transitions, 3200 flow [2022-11-18 20:48:39,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 302 transitions, 2941 flow, removed 61 selfloop flow, removed 31 redundant places. [2022-11-18 20:48:39,616 INFO L231 Difference]: Finished difference. Result has 325 places, 268 transitions, 2421 flow [2022-11-18 20:48:39,616 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2421, PETRI_PLACES=325, PETRI_TRANSITIONS=268} [2022-11-18 20:48:39,617 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-18 20:48:39,617 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 268 transitions, 2421 flow [2022-11-18 20:48:39,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:39,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:39,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:39,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:48:39,618 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash 215089168, now seen corresponding path program 27 times [2022-11-18 20:48:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:39,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459136712] [2022-11-18 20:48:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:39,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:40,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:40,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459136712] [2022-11-18 20:48:40,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459136712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:40,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:40,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:48:40,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215836393] [2022-11-18 20:48:40,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:40,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:48:40,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:40,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:48:40,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:48:40,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:40,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 268 transitions, 2421 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:40,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:40,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:40,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:41,827 INFO L130 PetriNetUnfolder]: 269/771 cut-off events. [2022-11-18 20:48:41,827 INFO L131 PetriNetUnfolder]: For 4782/4782 co-relation queries the response was YES. [2022-11-18 20:48:41,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4328 conditions, 771 events. 269/771 cut-off events. For 4782/4782 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3881 event pairs, 21 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 4233. Up to 489 conditions per place. [2022-11-18 20:48:41,837 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 153 selfloop transitions, 98 changer transitions 25/315 dead transitions. [2022-11-18 20:48:41,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 315 transitions, 3372 flow [2022-11-18 20:48:41,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:48:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:48:41,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-18 20:48:41,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-18 20:48:41,841 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-18 20:48:41,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-18 20:48:41,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:41,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-18 20:48:41,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:41,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:41,848 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:41,849 INFO L175 Difference]: Start difference. First operand has 325 places, 268 transitions, 2421 flow. Second operand 34 states and 1805 transitions. [2022-11-18 20:48:41,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 315 transitions, 3372 flow [2022-11-18 20:48:41,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 315 transitions, 3126 flow, removed 18 selfloop flow, removed 33 redundant places. [2022-11-18 20:48:41,902 INFO L231 Difference]: Finished difference. Result has 326 places, 271 transitions, 2506 flow [2022-11-18 20:48:41,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2506, PETRI_PLACES=326, PETRI_TRANSITIONS=271} [2022-11-18 20:48:41,903 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 238 predicate places. [2022-11-18 20:48:41,903 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 271 transitions, 2506 flow [2022-11-18 20:48:41,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:41,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:41,904 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:41,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:48:41,904 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:41,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1302081822, now seen corresponding path program 28 times [2022-11-18 20:48:41,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:41,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200772744] [2022-11-18 20:48:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:41,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:42,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:42,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:42,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200772744] [2022-11-18 20:48:42,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200772744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:42,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:42,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:48:42,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474765739] [2022-11-18 20:48:42,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:42,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:48:42,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:42,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:48:42,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:42,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:42,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 271 transitions, 2506 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:42,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:42,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:42,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:44,031 INFO L130 PetriNetUnfolder]: 264/759 cut-off events. [2022-11-18 20:48:44,031 INFO L131 PetriNetUnfolder]: For 4909/4909 co-relation queries the response was YES. [2022-11-18 20:48:44,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4314 conditions, 759 events. 264/759 cut-off events. For 4909/4909 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3793 event pairs, 18 based on Foata normal form. 1/757 useless extension candidates. Maximal degree in co-relation 4216. Up to 465 conditions per place. [2022-11-18 20:48:44,040 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 113 changer transitions 18/317 dead transitions. [2022-11-18 20:48:44,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 317 transitions, 3488 flow [2022-11-18 20:48:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:48:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 20:48:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1554 transitions. [2022-11-18 20:48:44,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.57006603081438 [2022-11-18 20:48:44,043 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1554 transitions. [2022-11-18 20:48:44,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1554 transitions. [2022-11-18 20:48:44,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:44,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1554 transitions. [2022-11-18 20:48:44,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.58620689655172) internal successors, (1554), 29 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:44,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:44,049 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:44,049 INFO L175 Difference]: Start difference. First operand has 326 places, 271 transitions, 2506 flow. Second operand 29 states and 1554 transitions. [2022-11-18 20:48:44,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 317 transitions, 3488 flow [2022-11-18 20:48:44,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 317 transitions, 3214 flow, removed 38 selfloop flow, removed 27 redundant places. [2022-11-18 20:48:44,103 INFO L231 Difference]: Finished difference. Result has 325 places, 277 transitions, 2617 flow [2022-11-18 20:48:44,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2617, PETRI_PLACES=325, PETRI_TRANSITIONS=277} [2022-11-18 20:48:44,104 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-18 20:48:44,104 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 277 transitions, 2617 flow [2022-11-18 20:48:44,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:44,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:44,105 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:44,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 20:48:44,105 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:44,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1890809614, now seen corresponding path program 29 times [2022-11-18 20:48:44,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:44,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251417724] [2022-11-18 20:48:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:44,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:44,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:44,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251417724] [2022-11-18 20:48:44,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251417724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:44,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:44,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:48:44,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489549014] [2022-11-18 20:48:44,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:44,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:48:44,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:48:44,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:48:44,738 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:44,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 277 transitions, 2617 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:44,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:44,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:44,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:46,268 INFO L130 PetriNetUnfolder]: 260/739 cut-off events. [2022-11-18 20:48:46,268 INFO L131 PetriNetUnfolder]: For 4860/4860 co-relation queries the response was YES. [2022-11-18 20:48:46,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 739 events. 260/739 cut-off events. For 4860/4860 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3606 event pairs, 20 based on Foata normal form. 1/737 useless extension candidates. Maximal degree in co-relation 4141. Up to 507 conditions per place. [2022-11-18 20:48:46,275 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 168 selfloop transitions, 64 changer transitions 29/300 dead transitions. [2022-11-18 20:48:46,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 300 transitions, 3242 flow [2022-11-18 20:48:46,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:48:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:48:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1681 transitions. [2022-11-18 20:48:46,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558843085106383 [2022-11-18 20:48:46,278 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1681 transitions. [2022-11-18 20:48:46,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1681 transitions. [2022-11-18 20:48:46,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:46,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1681 transitions. [2022-11-18 20:48:46,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.53125) internal successors, (1681), 32 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,284 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,284 INFO L175 Difference]: Start difference. First operand has 325 places, 277 transitions, 2617 flow. Second operand 32 states and 1681 transitions. [2022-11-18 20:48:46,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 300 transitions, 3242 flow [2022-11-18 20:48:46,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 300 transitions, 2993 flow, removed 41 selfloop flow, removed 24 redundant places. [2022-11-18 20:48:46,339 INFO L231 Difference]: Finished difference. Result has 331 places, 257 transitions, 2275 flow [2022-11-18 20:48:46,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2275, PETRI_PLACES=331, PETRI_TRANSITIONS=257} [2022-11-18 20:48:46,341 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 243 predicate places. [2022-11-18 20:48:46,341 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 257 transitions, 2275 flow [2022-11-18 20:48:46,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:46,341 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:46,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 20:48:46,342 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:46,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:46,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1394251328, now seen corresponding path program 30 times [2022-11-18 20:48:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:46,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32396397] [2022-11-18 20:48:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:46,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:46,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:46,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32396397] [2022-11-18 20:48:46,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32396397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:46,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:46,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:48:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962649298] [2022-11-18 20:48:46,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:46,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:48:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:48:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:46,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:46,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 257 transitions, 2275 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:46,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:46,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:48,210 INFO L130 PetriNetUnfolder]: 263/738 cut-off events. [2022-11-18 20:48:48,210 INFO L131 PetriNetUnfolder]: For 4417/4417 co-relation queries the response was YES. [2022-11-18 20:48:48,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 738 events. 263/738 cut-off events. For 4417/4417 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3598 event pairs, 18 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 3998. Up to 465 conditions per place. [2022-11-18 20:48:48,219 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 143 selfloop transitions, 99 changer transitions 18/299 dead transitions. [2022-11-18 20:48:48,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 299 transitions, 3142 flow [2022-11-18 20:48:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:48:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:48:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1603 transitions. [2022-11-18 20:48:48,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5684397163120567 [2022-11-18 20:48:48,229 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1603 transitions. [2022-11-18 20:48:48,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1603 transitions. [2022-11-18 20:48:48,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:48,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1603 transitions. [2022-11-18 20:48:48,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.43333333333333) internal successors, (1603), 30 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:48,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:48,236 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:48,236 INFO L175 Difference]: Start difference. First operand has 331 places, 257 transitions, 2275 flow. Second operand 30 states and 1603 transitions. [2022-11-18 20:48:48,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 299 transitions, 3142 flow [2022-11-18 20:48:48,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 299 transitions, 2849 flow, removed 37 selfloop flow, removed 37 redundant places. [2022-11-18 20:48:48,283 INFO L231 Difference]: Finished difference. Result has 302 places, 259 transitions, 2286 flow [2022-11-18 20:48:48,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2286, PETRI_PLACES=302, PETRI_TRANSITIONS=259} [2022-11-18 20:48:48,285 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 214 predicate places. [2022-11-18 20:48:48,285 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 259 transitions, 2286 flow [2022-11-18 20:48:48,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:48,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:48,285 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:48,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 20:48:48,287 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash -920258534, now seen corresponding path program 31 times [2022-11-18 20:48:48,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:48,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039989509] [2022-11-18 20:48:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:48,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:48,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:48,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:48,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039989509] [2022-11-18 20:48:48,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039989509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:48,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:48,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:48:48,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915016286] [2022-11-18 20:48:48,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:48,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:48:48,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:48:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:48:48,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:48,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 259 transitions, 2286 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:48,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:48,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:48,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:50,343 INFO L130 PetriNetUnfolder]: 262/725 cut-off events. [2022-11-18 20:48:50,343 INFO L131 PetriNetUnfolder]: For 4459/4459 co-relation queries the response was YES. [2022-11-18 20:48:50,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 725 events. 262/725 cut-off events. For 4459/4459 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3496 event pairs, 18 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 3943. Up to 474 conditions per place. [2022-11-18 20:48:50,352 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 148 selfloop transitions, 89 changer transitions 21/297 dead transitions. [2022-11-18 20:48:50,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 297 transitions, 3113 flow [2022-11-18 20:48:50,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:48:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:48:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1698 transitions. [2022-11-18 20:48:50,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644946808510638 [2022-11-18 20:48:50,355 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1698 transitions. [2022-11-18 20:48:50,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1698 transitions. [2022-11-18 20:48:50,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:50,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1698 transitions. [2022-11-18 20:48:50,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.0625) internal successors, (1698), 32 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:50,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:50,359 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:50,359 INFO L175 Difference]: Start difference. First operand has 302 places, 259 transitions, 2286 flow. Second operand 32 states and 1698 transitions. [2022-11-18 20:48:50,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 297 transitions, 3113 flow [2022-11-18 20:48:50,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 297 transitions, 2896 flow, removed 30 selfloop flow, removed 28 redundant places. [2022-11-18 20:48:50,459 INFO L231 Difference]: Finished difference. Result has 307 places, 257 transitions, 2300 flow [2022-11-18 20:48:50,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2300, PETRI_PLACES=307, PETRI_TRANSITIONS=257} [2022-11-18 20:48:50,461 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-18 20:48:50,461 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 257 transitions, 2300 flow [2022-11-18 20:48:50,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:50,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:50,462 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:50,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 20:48:50,462 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:50,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:50,463 INFO L85 PathProgramCache]: Analyzing trace with hash -394051736, now seen corresponding path program 32 times [2022-11-18 20:48:50,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:50,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648702688] [2022-11-18 20:48:50,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:50,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:51,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:51,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648702688] [2022-11-18 20:48:51,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648702688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:51,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:51,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:48:51,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51648301] [2022-11-18 20:48:51,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:51,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:48:51,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:51,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:48:51,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:51,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:51,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 257 transitions, 2300 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:51,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:51,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:51,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:52,418 INFO L130 PetriNetUnfolder]: 256/721 cut-off events. [2022-11-18 20:48:52,419 INFO L131 PetriNetUnfolder]: For 4586/4586 co-relation queries the response was YES. [2022-11-18 20:48:52,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4019 conditions, 721 events. 256/721 cut-off events. For 4586/4586 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3459 event pairs, 17 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 3929. Up to 456 conditions per place. [2022-11-18 20:48:52,424 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 143 selfloop transitions, 100 changer transitions 14/296 dead transitions. [2022-11-18 20:48:52,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 296 transitions, 3138 flow [2022-11-18 20:48:52,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:48:52,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:48:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1701 transitions. [2022-11-18 20:48:52,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5654920212765957 [2022-11-18 20:48:52,427 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1701 transitions. [2022-11-18 20:48:52,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1701 transitions. [2022-11-18 20:48:52,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:52,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1701 transitions. [2022-11-18 20:48:52,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.15625) internal successors, (1701), 32 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:52,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:52,433 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:52,433 INFO L175 Difference]: Start difference. First operand has 307 places, 257 transitions, 2300 flow. Second operand 32 states and 1701 transitions. [2022-11-18 20:48:52,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 296 transitions, 3138 flow [2022-11-18 20:48:52,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 296 transitions, 2882 flow, removed 40 selfloop flow, removed 30 redundant places. [2022-11-18 20:48:52,459 INFO L231 Difference]: Finished difference. Result has 307 places, 260 transitions, 2367 flow [2022-11-18 20:48:52,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2367, PETRI_PLACES=307, PETRI_TRANSITIONS=260} [2022-11-18 20:48:52,460 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-18 20:48:52,460 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 260 transitions, 2367 flow [2022-11-18 20:48:52,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:52,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:52,461 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:52,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 20:48:52,461 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:52,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:52,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1670592494, now seen corresponding path program 33 times [2022-11-18 20:48:52,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:52,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841389556] [2022-11-18 20:48:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:52,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:53,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:53,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841389556] [2022-11-18 20:48:53,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841389556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:53,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:53,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:48:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224663089] [2022-11-18 20:48:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:53,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:48:53,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:53,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:48:53,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:48:53,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:53,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 260 transitions, 2367 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:53,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:53,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:53,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:54,543 INFO L130 PetriNetUnfolder]: 255/716 cut-off events. [2022-11-18 20:48:54,543 INFO L131 PetriNetUnfolder]: For 4077/4077 co-relation queries the response was YES. [2022-11-18 20:48:54,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3978 conditions, 716 events. 255/716 cut-off events. For 4077/4077 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3440 event pairs, 19 based on Foata normal form. 1/713 useless extension candidates. Maximal degree in co-relation 3888. Up to 449 conditions per place. [2022-11-18 20:48:54,551 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 139 selfloop transitions, 92 changer transitions 25/295 dead transitions. [2022-11-18 20:48:54,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 295 transitions, 3134 flow [2022-11-18 20:48:54,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:48:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:48:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1749 transitions. [2022-11-18 20:48:54,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-18 20:48:54,554 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1749 transitions. [2022-11-18 20:48:54,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1749 transitions. [2022-11-18 20:48:54,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:54,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1749 transitions. [2022-11-18 20:48:54,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:54,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:54,561 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:54,561 INFO L175 Difference]: Start difference. First operand has 307 places, 260 transitions, 2367 flow. Second operand 33 states and 1749 transitions. [2022-11-18 20:48:54,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 295 transitions, 3134 flow [2022-11-18 20:48:54,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 295 transitions, 2900 flow, removed 32 selfloop flow, removed 27 redundant places. [2022-11-18 20:48:54,605 INFO L231 Difference]: Finished difference. Result has 315 places, 249 transitions, 2284 flow [2022-11-18 20:48:54,606 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2284, PETRI_PLACES=315, PETRI_TRANSITIONS=249} [2022-11-18 20:48:54,606 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 227 predicate places. [2022-11-18 20:48:54,606 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 249 transitions, 2284 flow [2022-11-18 20:48:54,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:54,607 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:54,607 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:54,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 20:48:54,607 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:54,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:54,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1177861492, now seen corresponding path program 34 times [2022-11-18 20:48:54,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:54,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714049074] [2022-11-18 20:48:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:54,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:55,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:55,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714049074] [2022-11-18 20:48:55,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714049074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:55,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:55,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:48:55,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591905010] [2022-11-18 20:48:55,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:55,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:48:55,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:55,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:48:55,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:48:55,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:55,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 249 transitions, 2284 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:55,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:55,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:55,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:56,687 INFO L130 PetriNetUnfolder]: 250/699 cut-off events. [2022-11-18 20:48:56,687 INFO L131 PetriNetUnfolder]: For 4452/4452 co-relation queries the response was YES. [2022-11-18 20:48:56,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3991 conditions, 699 events. 250/699 cut-off events. For 4452/4452 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3317 event pairs, 17 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 3897. Up to 468 conditions per place. [2022-11-18 20:48:56,697 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 83 changer transitions 16/285 dead transitions. [2022-11-18 20:48:56,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 285 transitions, 3064 flow [2022-11-18 20:48:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:48:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:48:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1792 transitions. [2022-11-18 20:48:56,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5607008760951189 [2022-11-18 20:48:56,700 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1792 transitions. [2022-11-18 20:48:56,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1792 transitions. [2022-11-18 20:48:56,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:56,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1792 transitions. [2022-11-18 20:48:56,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.705882352941174) internal successors, (1792), 34 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:56,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:56,704 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:56,704 INFO L175 Difference]: Start difference. First operand has 315 places, 249 transitions, 2284 flow. Second operand 34 states and 1792 transitions. [2022-11-18 20:48:56,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 285 transitions, 3064 flow [2022-11-18 20:48:56,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 285 transitions, 2770 flow, removed 32 selfloop flow, removed 37 redundant places. [2022-11-18 20:48:56,736 INFO L231 Difference]: Finished difference. Result has 307 places, 251 transitions, 2245 flow [2022-11-18 20:48:56,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2245, PETRI_PLACES=307, PETRI_TRANSITIONS=251} [2022-11-18 20:48:56,737 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-18 20:48:56,737 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 251 transitions, 2245 flow [2022-11-18 20:48:56,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:56,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:56,737 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:56,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 20:48:56,737 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:56,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:56,738 INFO L85 PathProgramCache]: Analyzing trace with hash 103252404, now seen corresponding path program 35 times [2022-11-18 20:48:56,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:56,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999398129] [2022-11-18 20:48:56,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:56,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:57,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:57,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999398129] [2022-11-18 20:48:57,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999398129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:57,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:57,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:48:57,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833683411] [2022-11-18 20:48:57,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:57,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:48:57,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:57,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:48:57,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:48:57,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:57,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 251 transitions, 2245 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:57,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:57,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:57,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:58,597 INFO L130 PetriNetUnfolder]: 245/684 cut-off events. [2022-11-18 20:48:58,598 INFO L131 PetriNetUnfolder]: For 4086/4086 co-relation queries the response was YES. [2022-11-18 20:48:58,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3855 conditions, 684 events. 245/684 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3222 event pairs, 19 based on Foata normal form. 1/681 useless extension candidates. Maximal degree in co-relation 3763. Up to 464 conditions per place. [2022-11-18 20:48:58,608 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 146 selfloop transitions, 70 changer transitions 21/276 dead transitions. [2022-11-18 20:48:58,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 276 transitions, 2864 flow [2022-11-18 20:48:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:48:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:48:58,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1636 transitions. [2022-11-18 20:48:58,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5614275909402883 [2022-11-18 20:48:58,610 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1636 transitions. [2022-11-18 20:48:58,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1636 transitions. [2022-11-18 20:48:58,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:58,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1636 transitions. [2022-11-18 20:48:58,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.774193548387096) internal successors, (1636), 31 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:58,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:58,616 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:58,616 INFO L175 Difference]: Start difference. First operand has 307 places, 251 transitions, 2245 flow. Second operand 31 states and 1636 transitions. [2022-11-18 20:48:58,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 276 transitions, 2864 flow [2022-11-18 20:48:58,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 276 transitions, 2669 flow, removed 30 selfloop flow, removed 28 redundant places. [2022-11-18 20:48:58,646 INFO L231 Difference]: Finished difference. Result has 307 places, 238 transitions, 2077 flow [2022-11-18 20:48:58,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2077, PETRI_PLACES=307, PETRI_TRANSITIONS=238} [2022-11-18 20:48:58,647 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-18 20:48:58,647 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 238 transitions, 2077 flow [2022-11-18 20:48:58,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:58,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:58,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:58,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-18 20:48:58,649 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:48:58,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:58,649 INFO L85 PathProgramCache]: Analyzing trace with hash -710610230, now seen corresponding path program 36 times [2022-11-18 20:48:58,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:58,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931559929] [2022-11-18 20:48:58,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:58,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:59,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:59,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931559929] [2022-11-18 20:48:59,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931559929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:59,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:59,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:48:59,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702895317] [2022-11-18 20:48:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:59,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:48:59,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:59,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:48:59,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:59,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:48:59,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 238 transitions, 2077 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:59,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:59,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:48:59,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:00,600 INFO L130 PetriNetUnfolder]: 241/670 cut-off events. [2022-11-18 20:49:00,600 INFO L131 PetriNetUnfolder]: For 3996/3996 co-relation queries the response was YES. [2022-11-18 20:49:00,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 670 events. 241/670 cut-off events. For 3996/3996 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3119 event pairs, 18 based on Foata normal form. 1/668 useless extension candidates. Maximal degree in co-relation 3671. Up to 438 conditions per place. [2022-11-18 20:49:00,608 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 128 selfloop transitions, 79 changer transitions 22/268 dead transitions. [2022-11-18 20:49:00,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 268 transitions, 2710 flow [2022-11-18 20:49:00,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:49:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:49:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1593 transitions. [2022-11-18 20:49:00,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5648936170212766 [2022-11-18 20:49:00,610 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1593 transitions. [2022-11-18 20:49:00,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1593 transitions. [2022-11-18 20:49:00,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:00,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1593 transitions. [2022-11-18 20:49:00,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.1) internal successors, (1593), 30 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:00,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:00,616 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:00,616 INFO L175 Difference]: Start difference. First operand has 307 places, 238 transitions, 2077 flow. Second operand 30 states and 1593 transitions. [2022-11-18 20:49:00,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 268 transitions, 2710 flow [2022-11-18 20:49:00,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 268 transitions, 2435 flow, removed 21 selfloop flow, removed 36 redundant places. [2022-11-18 20:49:00,657 INFO L231 Difference]: Finished difference. Result has 285 places, 228 transitions, 1909 flow [2022-11-18 20:49:00,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1909, PETRI_PLACES=285, PETRI_TRANSITIONS=228} [2022-11-18 20:49:00,658 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 197 predicate places. [2022-11-18 20:49:00,658 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 228 transitions, 1909 flow [2022-11-18 20:49:00,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:00,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:00,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:00,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-18 20:49:00,659 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:00,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash -921725570, now seen corresponding path program 37 times [2022-11-18 20:49:00,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:00,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023611249] [2022-11-18 20:49:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:00,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:01,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:01,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:01,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023611249] [2022-11-18 20:49:01,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023611249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:01,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:01,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:49:01,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482269333] [2022-11-18 20:49:01,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:01,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:49:01,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:01,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:49:01,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:49:01,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:01,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 228 transitions, 1909 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:01,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:01,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:01,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:02,597 INFO L130 PetriNetUnfolder]: 234/643 cut-off events. [2022-11-18 20:49:02,598 INFO L131 PetriNetUnfolder]: For 3490/3490 co-relation queries the response was YES. [2022-11-18 20:49:02,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3525 conditions, 643 events. 234/643 cut-off events. For 3490/3490 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2926 event pairs, 15 based on Foata normal form. 1/641 useless extension candidates. Maximal degree in co-relation 3442. Up to 434 conditions per place. [2022-11-18 20:49:02,607 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 125 selfloop transitions, 69 changer transitions 22/255 dead transitions. [2022-11-18 20:49:02,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 255 transitions, 2486 flow [2022-11-18 20:49:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:49:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:49:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1586 transitions. [2022-11-18 20:49:02,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624113475177305 [2022-11-18 20:49:02,610 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1586 transitions. [2022-11-18 20:49:02,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1586 transitions. [2022-11-18 20:49:02,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:02,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1586 transitions. [2022-11-18 20:49:02,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.86666666666667) internal successors, (1586), 30 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:02,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:02,616 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:02,616 INFO L175 Difference]: Start difference. First operand has 285 places, 228 transitions, 1909 flow. Second operand 30 states and 1586 transitions. [2022-11-18 20:49:02,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 255 transitions, 2486 flow [2022-11-18 20:49:02,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 255 transitions, 2231 flow, removed 12 selfloop flow, removed 34 redundant places. [2022-11-18 20:49:02,646 INFO L231 Difference]: Finished difference. Result has 273 places, 218 transitions, 1739 flow [2022-11-18 20:49:02,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1739, PETRI_PLACES=273, PETRI_TRANSITIONS=218} [2022-11-18 20:49:02,647 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-18 20:49:02,648 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 218 transitions, 1739 flow [2022-11-18 20:49:02,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:02,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:02,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:02,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-18 20:49:02,649 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:02,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:02,649 INFO L85 PathProgramCache]: Analyzing trace with hash 199721444, now seen corresponding path program 38 times [2022-11-18 20:49:02,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:02,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737996293] [2022-11-18 20:49:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:02,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:03,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:03,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737996293] [2022-11-18 20:49:03,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737996293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:03,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:03,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:49:03,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985216138] [2022-11-18 20:49:03,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:03,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:49:03,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:03,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:49:03,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:49:03,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:03,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 218 transitions, 1739 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:03,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:03,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:03,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:04,723 INFO L130 PetriNetUnfolder]: 230/626 cut-off events. [2022-11-18 20:49:04,723 INFO L131 PetriNetUnfolder]: For 3083/3083 co-relation queries the response was YES. [2022-11-18 20:49:04,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 626 events. 230/626 cut-off events. For 3083/3083 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2802 event pairs, 15 based on Foata normal form. 1/624 useless extension candidates. Maximal degree in co-relation 3253. Up to 426 conditions per place. [2022-11-18 20:49:04,728 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 118 selfloop transitions, 72 changer transitions 15/244 dead transitions. [2022-11-18 20:49:04,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 244 transitions, 2311 flow [2022-11-18 20:49:04,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:49:04,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:49:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1682 transitions. [2022-11-18 20:49:04,730 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591755319148937 [2022-11-18 20:49:04,730 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1682 transitions. [2022-11-18 20:49:04,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1682 transitions. [2022-11-18 20:49:04,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:04,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1682 transitions. [2022-11-18 20:49:04,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.5625) internal successors, (1682), 32 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:04,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:04,736 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:04,737 INFO L175 Difference]: Start difference. First operand has 273 places, 218 transitions, 1739 flow. Second operand 32 states and 1682 transitions. [2022-11-18 20:49:04,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 244 transitions, 2311 flow [2022-11-18 20:49:04,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 244 transitions, 2076 flow, removed 15 selfloop flow, removed 33 redundant places. [2022-11-18 20:49:04,767 INFO L231 Difference]: Finished difference. Result has 261 places, 213 transitions, 1649 flow [2022-11-18 20:49:04,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1649, PETRI_PLACES=261, PETRI_TRANSITIONS=213} [2022-11-18 20:49:04,768 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 173 predicate places. [2022-11-18 20:49:04,769 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 213 transitions, 1649 flow [2022-11-18 20:49:04,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:04,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:04,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:04,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-18 20:49:04,770 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:04,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:04,770 INFO L85 PathProgramCache]: Analyzing trace with hash -358046080, now seen corresponding path program 39 times [2022-11-18 20:49:04,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:04,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024648267] [2022-11-18 20:49:04,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:04,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:05,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:05,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024648267] [2022-11-18 20:49:05,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024648267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:05,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:05,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:49:05,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326830364] [2022-11-18 20:49:05,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:05,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:49:05,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:49:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:49:05,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:05,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 213 transitions, 1649 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:05,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:05,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:05,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:06,678 INFO L130 PetriNetUnfolder]: 226/611 cut-off events. [2022-11-18 20:49:06,678 INFO L131 PetriNetUnfolder]: For 2965/2965 co-relation queries the response was YES. [2022-11-18 20:49:06,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 611 events. 226/611 cut-off events. For 2965/2965 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2722 event pairs, 18 based on Foata normal form. 1/610 useless extension candidates. Maximal degree in co-relation 3133. Up to 424 conditions per place. [2022-11-18 20:49:06,685 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 112 selfloop transitions, 55 changer transitions 31/237 dead transitions. [2022-11-18 20:49:06,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 237 transitions, 2158 flow [2022-11-18 20:49:06,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:49:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:49:06,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1577 transitions. [2022-11-18 20:49:06,688 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592198581560284 [2022-11-18 20:49:06,688 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1577 transitions. [2022-11-18 20:49:06,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1577 transitions. [2022-11-18 20:49:06,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:06,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1577 transitions. [2022-11-18 20:49:06,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.56666666666667) internal successors, (1577), 30 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:06,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:06,692 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:06,692 INFO L175 Difference]: Start difference. First operand has 261 places, 213 transitions, 1649 flow. Second operand 30 states and 1577 transitions. [2022-11-18 20:49:06,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 237 transitions, 2158 flow [2022-11-18 20:49:06,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 237 transitions, 1957 flow, removed 10 selfloop flow, removed 31 redundant places. [2022-11-18 20:49:06,712 INFO L231 Difference]: Finished difference. Result has 255 places, 196 transitions, 1474 flow [2022-11-18 20:49:06,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1474, PETRI_PLACES=255, PETRI_TRANSITIONS=196} [2022-11-18 20:49:06,713 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 167 predicate places. [2022-11-18 20:49:06,713 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 196 transitions, 1474 flow [2022-11-18 20:49:06,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:06,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:06,714 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:06,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-18 20:49:06,714 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:06,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:06,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2011754598, now seen corresponding path program 40 times [2022-11-18 20:49:06,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:06,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393664330] [2022-11-18 20:49:06,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:06,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:07,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:07,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393664330] [2022-11-18 20:49:07,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393664330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:07,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:07,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:49:07,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174630627] [2022-11-18 20:49:07,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:07,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:49:07,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:07,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:49:07,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:49:07,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:07,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 196 transitions, 1474 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:07,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:07,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:07,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:08,933 INFO L130 PetriNetUnfolder]: 260/728 cut-off events. [2022-11-18 20:49:08,933 INFO L131 PetriNetUnfolder]: For 3522/3522 co-relation queries the response was YES. [2022-11-18 20:49:08,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 728 events. 260/728 cut-off events. For 3522/3522 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3596 event pairs, 53 based on Foata normal form. 1/727 useless extension candidates. Maximal degree in co-relation 3600. Up to 435 conditions per place. [2022-11-18 20:49:08,940 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 115 selfloop transitions, 81 changer transitions 45/280 dead transitions. [2022-11-18 20:49:08,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 280 transitions, 2767 flow [2022-11-18 20:49:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:49:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:49:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1965 transitions. [2022-11-18 20:49:08,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5649798734905118 [2022-11-18 20:49:08,945 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1965 transitions. [2022-11-18 20:49:08,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1965 transitions. [2022-11-18 20:49:08,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:08,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1965 transitions. [2022-11-18 20:49:08,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.108108108108105) internal successors, (1965), 37 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:08,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:08,949 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:08,949 INFO L175 Difference]: Start difference. First operand has 255 places, 196 transitions, 1474 flow. Second operand 37 states and 1965 transitions. [2022-11-18 20:49:08,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 280 transitions, 2767 flow [2022-11-18 20:49:08,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 280 transitions, 2503 flow, removed 25 selfloop flow, removed 28 redundant places. [2022-11-18 20:49:08,971 INFO L231 Difference]: Finished difference. Result has 257 places, 221 transitions, 1845 flow [2022-11-18 20:49:08,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1845, PETRI_PLACES=257, PETRI_TRANSITIONS=221} [2022-11-18 20:49:08,972 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 169 predicate places. [2022-11-18 20:49:08,972 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 221 transitions, 1845 flow [2022-11-18 20:49:08,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:08,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:08,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:08,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-18 20:49:08,974 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1432156986, now seen corresponding path program 41 times [2022-11-18 20:49:08,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:08,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764130299] [2022-11-18 20:49:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:08,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:09,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:09,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764130299] [2022-11-18 20:49:09,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764130299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:09,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:09,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:49:09,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540472747] [2022-11-18 20:49:09,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:09,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:49:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:09,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:49:09,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:09,471 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:09,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 221 transitions, 1845 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:09,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:09,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:09,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:11,128 INFO L130 PetriNetUnfolder]: 280/764 cut-off events. [2022-11-18 20:49:11,128 INFO L131 PetriNetUnfolder]: For 5492/5492 co-relation queries the response was YES. [2022-11-18 20:49:11,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4223 conditions, 764 events. 280/764 cut-off events. For 5492/5492 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3686 event pairs, 39 based on Foata normal form. 1/763 useless extension candidates. Maximal degree in co-relation 4140. Up to 482 conditions per place. [2022-11-18 20:49:11,138 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 146 selfloop transitions, 97 changer transitions 22/304 dead transitions. [2022-11-18 20:49:11,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 304 transitions, 3346 flow [2022-11-18 20:49:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:49:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 20:49:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2071 transitions. [2022-11-18 20:49:11,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5649208947081288 [2022-11-18 20:49:11,141 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2071 transitions. [2022-11-18 20:49:11,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2071 transitions. [2022-11-18 20:49:11,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:11,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2071 transitions. [2022-11-18 20:49:11,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.1025641025641) internal successors, (2071), 39 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:11,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:11,148 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:11,148 INFO L175 Difference]: Start difference. First operand has 257 places, 221 transitions, 1845 flow. Second operand 39 states and 2071 transitions. [2022-11-18 20:49:11,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 304 transitions, 3346 flow [2022-11-18 20:49:11,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 304 transitions, 2978 flow, removed 148 selfloop flow, removed 21 redundant places. [2022-11-18 20:49:11,195 INFO L231 Difference]: Finished difference. Result has 277 places, 258 transitions, 2347 flow [2022-11-18 20:49:11,196 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2347, PETRI_PLACES=277, PETRI_TRANSITIONS=258} [2022-11-18 20:49:11,196 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 189 predicate places. [2022-11-18 20:49:11,196 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 258 transitions, 2347 flow [2022-11-18 20:49:11,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:11,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:11,197 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:11,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-18 20:49:11,197 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:11,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:11,198 INFO L85 PathProgramCache]: Analyzing trace with hash -170058180, now seen corresponding path program 42 times [2022-11-18 20:49:11,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:11,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572155651] [2022-11-18 20:49:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:11,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:11,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572155651] [2022-11-18 20:49:11,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572155651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:11,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:11,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:49:11,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838947408] [2022-11-18 20:49:11,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:11,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:49:11,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:11,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:49:11,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:11,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:11,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 258 transitions, 2347 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:11,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:11,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:11,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:13,177 INFO L130 PetriNetUnfolder]: 296/817 cut-off events. [2022-11-18 20:49:13,177 INFO L131 PetriNetUnfolder]: For 7313/7313 co-relation queries the response was YES. [2022-11-18 20:49:13,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4772 conditions, 817 events. 296/817 cut-off events. For 7313/7313 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4149 event pairs, 56 based on Foata normal form. 1/816 useless extension candidates. Maximal degree in co-relation 4687. Up to 527 conditions per place. [2022-11-18 20:49:13,184 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 166 selfloop transitions, 79 changer transitions 36/320 dead transitions. [2022-11-18 20:49:13,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 320 transitions, 3625 flow [2022-11-18 20:49:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:49:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:49:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1813 transitions. [2022-11-18 20:49:13,186 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5672715894868585 [2022-11-18 20:49:13,186 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1813 transitions. [2022-11-18 20:49:13,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1813 transitions. [2022-11-18 20:49:13,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:13,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1813 transitions. [2022-11-18 20:49:13,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.3235294117647) internal successors, (1813), 34 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:13,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:13,191 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:13,191 INFO L175 Difference]: Start difference. First operand has 277 places, 258 transitions, 2347 flow. Second operand 34 states and 1813 transitions. [2022-11-18 20:49:13,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 320 transitions, 3625 flow [2022-11-18 20:49:13,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 320 transitions, 3143 flow, removed 204 selfloop flow, removed 17 redundant places. [2022-11-18 20:49:13,227 INFO L231 Difference]: Finished difference. Result has 301 places, 268 transitions, 2299 flow [2022-11-18 20:49:13,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2299, PETRI_PLACES=301, PETRI_TRANSITIONS=268} [2022-11-18 20:49:13,228 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 213 predicate places. [2022-11-18 20:49:13,228 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 268 transitions, 2299 flow [2022-11-18 20:49:13,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:13,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:13,229 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:13,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-18 20:49:13,229 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:13,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:13,230 INFO L85 PathProgramCache]: Analyzing trace with hash -273998376, now seen corresponding path program 43 times [2022-11-18 20:49:13,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:13,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330457254] [2022-11-18 20:49:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:13,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:13,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:13,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330457254] [2022-11-18 20:49:13,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330457254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:13,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:13,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:49:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849000096] [2022-11-18 20:49:13,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:13,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:49:13,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:49:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:13,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:13,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 268 transitions, 2299 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:13,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:13,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:13,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:15,324 INFO L130 PetriNetUnfolder]: 300/837 cut-off events. [2022-11-18 20:49:15,324 INFO L131 PetriNetUnfolder]: For 8423/8423 co-relation queries the response was YES. [2022-11-18 20:49:15,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4992 conditions, 837 events. 300/837 cut-off events. For 8423/8423 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4292 event pairs, 53 based on Foata normal form. 1/836 useless extension candidates. Maximal degree in co-relation 4895. Up to 536 conditions per place. [2022-11-18 20:49:15,332 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 161 selfloop transitions, 87 changer transitions 37/324 dead transitions. [2022-11-18 20:49:15,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 324 transitions, 3502 flow [2022-11-18 20:49:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:49:15,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:49:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1811 transitions. [2022-11-18 20:49:15,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5666458072590739 [2022-11-18 20:49:15,335 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1811 transitions. [2022-11-18 20:49:15,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1811 transitions. [2022-11-18 20:49:15,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:15,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1811 transitions. [2022-11-18 20:49:15,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.26470588235294) internal successors, (1811), 34 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:15,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:15,339 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:15,339 INFO L175 Difference]: Start difference. First operand has 301 places, 268 transitions, 2299 flow. Second operand 34 states and 1811 transitions. [2022-11-18 20:49:15,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 324 transitions, 3502 flow [2022-11-18 20:49:15,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 324 transitions, 3163 flow, removed 117 selfloop flow, removed 27 redundant places. [2022-11-18 20:49:15,383 INFO L231 Difference]: Finished difference. Result has 310 places, 275 transitions, 2407 flow [2022-11-18 20:49:15,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2407, PETRI_PLACES=310, PETRI_TRANSITIONS=275} [2022-11-18 20:49:15,384 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 222 predicate places. [2022-11-18 20:49:15,384 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 275 transitions, 2407 flow [2022-11-18 20:49:15,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:15,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:15,384 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:15,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-18 20:49:15,385 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:15,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:15,385 INFO L85 PathProgramCache]: Analyzing trace with hash -327641696, now seen corresponding path program 44 times [2022-11-18 20:49:15,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:15,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953710646] [2022-11-18 20:49:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:15,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:15,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:15,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953710646] [2022-11-18 20:49:15,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953710646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:15,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:15,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:49:15,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497484917] [2022-11-18 20:49:15,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:15,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:49:15,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:15,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:49:15,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:15,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:15,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 275 transitions, 2407 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:15,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:15,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:15,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:17,481 INFO L130 PetriNetUnfolder]: 307/857 cut-off events. [2022-11-18 20:49:17,481 INFO L131 PetriNetUnfolder]: For 9064/9064 co-relation queries the response was YES. [2022-11-18 20:49:17,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5240 conditions, 857 events. 307/857 cut-off events. For 9064/9064 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4448 event pairs, 56 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 5139. Up to 536 conditions per place. [2022-11-18 20:49:17,496 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 170 selfloop transitions, 95 changer transitions 40/344 dead transitions. [2022-11-18 20:49:17,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 344 transitions, 3809 flow [2022-11-18 20:49:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:49:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:49:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2022-11-18 20:49:17,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693205216197667 [2022-11-18 20:49:17,500 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2022-11-18 20:49:17,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2022-11-18 20:49:17,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:17,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2022-11-18 20:49:17,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:17,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:17,506 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:17,506 INFO L175 Difference]: Start difference. First operand has 310 places, 275 transitions, 2407 flow. Second operand 31 states and 1659 transitions. [2022-11-18 20:49:17,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 344 transitions, 3809 flow [2022-11-18 20:49:17,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 344 transitions, 3497 flow, removed 101 selfloop flow, removed 29 redundant places. [2022-11-18 20:49:17,575 INFO L231 Difference]: Finished difference. Result has 316 places, 287 transitions, 2695 flow [2022-11-18 20:49:17,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2695, PETRI_PLACES=316, PETRI_TRANSITIONS=287} [2022-11-18 20:49:17,576 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 228 predicate places. [2022-11-18 20:49:17,576 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 287 transitions, 2695 flow [2022-11-18 20:49:17,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:17,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:17,576 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:17,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-18 20:49:17,577 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:17,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:17,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1872896644, now seen corresponding path program 45 times [2022-11-18 20:49:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:17,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349176811] [2022-11-18 20:49:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:17,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:18,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:18,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349176811] [2022-11-18 20:49:18,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349176811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:18,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:18,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:49:18,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748412571] [2022-11-18 20:49:18,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:18,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:49:18,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:18,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:49:18,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:49:18,167 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:18,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 287 transitions, 2695 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:18,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:18,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:18,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:19,858 INFO L130 PetriNetUnfolder]: 305/862 cut-off events. [2022-11-18 20:49:19,858 INFO L131 PetriNetUnfolder]: For 9634/9634 co-relation queries the response was YES. [2022-11-18 20:49:19,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 862 events. 305/862 cut-off events. For 9634/9634 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4545 event pairs, 52 based on Foata normal form. 1/861 useless extension candidates. Maximal degree in co-relation 5294. Up to 544 conditions per place. [2022-11-18 20:49:19,874 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 162 selfloop transitions, 101 changer transitions 37/339 dead transitions. [2022-11-18 20:49:19,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 339 transitions, 3866 flow [2022-11-18 20:49:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:49:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:49:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1909 transitions. [2022-11-18 20:49:19,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641252955082743 [2022-11-18 20:49:19,877 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1909 transitions. [2022-11-18 20:49:19,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1909 transitions. [2022-11-18 20:49:19,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:19,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1909 transitions. [2022-11-18 20:49:19,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.02777777777778) internal successors, (1909), 36 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:19,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:19,881 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:19,881 INFO L175 Difference]: Start difference. First operand has 316 places, 287 transitions, 2695 flow. Second operand 36 states and 1909 transitions. [2022-11-18 20:49:19,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 339 transitions, 3866 flow [2022-11-18 20:49:19,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 339 transitions, 3627 flow, removed 72 selfloop flow, removed 27 redundant places. [2022-11-18 20:49:19,930 INFO L231 Difference]: Finished difference. Result has 326 places, 290 transitions, 2850 flow [2022-11-18 20:49:19,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2512, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2850, PETRI_PLACES=326, PETRI_TRANSITIONS=290} [2022-11-18 20:49:19,931 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 238 predicate places. [2022-11-18 20:49:19,931 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 290 transitions, 2850 flow [2022-11-18 20:49:19,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:19,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:19,932 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:19,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-18 20:49:19,933 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:19,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:19,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1738087850, now seen corresponding path program 46 times [2022-11-18 20:49:19,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:19,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085853344] [2022-11-18 20:49:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:19,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:20,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:20,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085853344] [2022-11-18 20:49:20,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085853344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:20,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:20,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:49:20,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892691109] [2022-11-18 20:49:20,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:20,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:49:20,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:20,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:49:20,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:20,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:20,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 290 transitions, 2850 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:20,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:20,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:20,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:22,120 INFO L130 PetriNetUnfolder]: 305/861 cut-off events. [2022-11-18 20:49:22,120 INFO L131 PetriNetUnfolder]: For 9789/9789 co-relation queries the response was YES. [2022-11-18 20:49:22,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 861 events. 305/861 cut-off events. For 9789/9789 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4518 event pairs, 57 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 5405. Up to 557 conditions per place. [2022-11-18 20:49:22,129 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 174 selfloop transitions, 89 changer transitions 38/340 dead transitions. [2022-11-18 20:49:22,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 340 transitions, 3979 flow [2022-11-18 20:49:22,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:49:22,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:49:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-18 20:49:22,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-18 20:49:22,131 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-18 20:49:22,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-18 20:49:22,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:22,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-18 20:49:22,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:22,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:22,135 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:22,135 INFO L175 Difference]: Start difference. First operand has 326 places, 290 transitions, 2850 flow. Second operand 35 states and 1858 transitions. [2022-11-18 20:49:22,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 340 transitions, 3979 flow [2022-11-18 20:49:22,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 340 transitions, 3730 flow, removed 53 selfloop flow, removed 33 redundant places. [2022-11-18 20:49:22,185 INFO L231 Difference]: Finished difference. Result has 331 places, 290 transitions, 2905 flow [2022-11-18 20:49:22,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2647, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2905, PETRI_PLACES=331, PETRI_TRANSITIONS=290} [2022-11-18 20:49:22,185 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 243 predicate places. [2022-11-18 20:49:22,185 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 290 transitions, 2905 flow [2022-11-18 20:49:22,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:22,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:22,186 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:22,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-18 20:49:22,186 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:22,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:22,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1371800656, now seen corresponding path program 47 times [2022-11-18 20:49:22,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:22,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577394422] [2022-11-18 20:49:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:22,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:22,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:22,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577394422] [2022-11-18 20:49:22,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577394422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:22,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:22,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:49:22,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794630717] [2022-11-18 20:49:22,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:22,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:49:22,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:22,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:49:22,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:49:22,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:22,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 290 transitions, 2905 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:22,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:22,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:22,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:24,529 INFO L130 PetriNetUnfolder]: 306/842 cut-off events. [2022-11-18 20:49:24,529 INFO L131 PetriNetUnfolder]: For 9877/9877 co-relation queries the response was YES. [2022-11-18 20:49:24,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 842 events. 306/842 cut-off events. For 9877/9877 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4375 event pairs, 58 based on Foata normal form. 1/841 useless extension candidates. Maximal degree in co-relation 5491. Up to 555 conditions per place. [2022-11-18 20:49:24,538 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 170 selfloop transitions, 100 changer transitions 34/343 dead transitions. [2022-11-18 20:49:24,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 343 transitions, 4161 flow [2022-11-18 20:49:24,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:49:24,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:49:24,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2009 transitions. [2022-11-18 20:49:24,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624300111982082 [2022-11-18 20:49:24,541 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2009 transitions. [2022-11-18 20:49:24,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2009 transitions. [2022-11-18 20:49:24,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:24,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2009 transitions. [2022-11-18 20:49:24,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.86842105263158) internal successors, (2009), 38 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:24,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:24,545 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:24,545 INFO L175 Difference]: Start difference. First operand has 331 places, 290 transitions, 2905 flow. Second operand 38 states and 2009 transitions. [2022-11-18 20:49:24,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 343 transitions, 4161 flow [2022-11-18 20:49:24,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 343 transitions, 3859 flow, removed 77 selfloop flow, removed 30 redundant places. [2022-11-18 20:49:24,603 INFO L231 Difference]: Finished difference. Result has 342 places, 296 transitions, 3111 flow [2022-11-18 20:49:24,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2675, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3111, PETRI_PLACES=342, PETRI_TRANSITIONS=296} [2022-11-18 20:49:24,605 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 254 predicate places. [2022-11-18 20:49:24,605 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 296 transitions, 3111 flow [2022-11-18 20:49:24,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:24,605 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:24,605 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:24,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-18 20:49:24,606 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:24,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:24,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1767480892, now seen corresponding path program 48 times [2022-11-18 20:49:24,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:24,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369527160] [2022-11-18 20:49:24,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:24,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:25,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:25,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369527160] [2022-11-18 20:49:25,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369527160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:25,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:25,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:49:25,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050215507] [2022-11-18 20:49:25,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:25,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:49:25,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:25,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:49:25,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:49:25,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:25,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 296 transitions, 3111 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:25,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:25,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:25,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:26,758 INFO L130 PetriNetUnfolder]: 298/851 cut-off events. [2022-11-18 20:49:26,759 INFO L131 PetriNetUnfolder]: For 9827/9827 co-relation queries the response was YES. [2022-11-18 20:49:26,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 851 events. 298/851 cut-off events. For 9827/9827 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4464 event pairs, 59 based on Foata normal form. 1/850 useless extension candidates. Maximal degree in co-relation 5486. Up to 555 conditions per place. [2022-11-18 20:49:26,774 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 170 selfloop transitions, 90 changer transitions 36/335 dead transitions. [2022-11-18 20:49:26,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 335 transitions, 4067 flow [2022-11-18 20:49:26,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:49:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:49:26,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1855 transitions. [2022-11-18 20:49:26,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-18 20:49:26,777 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1855 transitions. [2022-11-18 20:49:26,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1855 transitions. [2022-11-18 20:49:26,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:26,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1855 transitions. [2022-11-18 20:49:26,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.0) internal successors, (1855), 35 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:26,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:26,781 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:26,781 INFO L175 Difference]: Start difference. First operand has 342 places, 296 transitions, 3111 flow. Second operand 35 states and 1855 transitions. [2022-11-18 20:49:26,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 335 transitions, 4067 flow [2022-11-18 20:49:26,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 335 transitions, 3702 flow, removed 101 selfloop flow, removed 31 redundant places. [2022-11-18 20:49:26,854 INFO L231 Difference]: Finished difference. Result has 345 places, 288 transitions, 2966 flow [2022-11-18 20:49:26,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2966, PETRI_PLACES=345, PETRI_TRANSITIONS=288} [2022-11-18 20:49:26,855 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 257 predicate places. [2022-11-18 20:49:26,855 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 288 transitions, 2966 flow [2022-11-18 20:49:26,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:26,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:26,856 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:26,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-18 20:49:26,856 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:26,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:26,857 INFO L85 PathProgramCache]: Analyzing trace with hash 960424702, now seen corresponding path program 49 times [2022-11-18 20:49:26,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:26,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099511637] [2022-11-18 20:49:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:27,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:27,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099511637] [2022-11-18 20:49:27,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099511637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:27,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:27,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:49:27,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939357307] [2022-11-18 20:49:27,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:27,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:49:27,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:27,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:49:27,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:49:27,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:27,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 288 transitions, 2966 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:27,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:27,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:27,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:29,019 INFO L130 PetriNetUnfolder]: 300/863 cut-off events. [2022-11-18 20:49:29,019 INFO L131 PetriNetUnfolder]: For 9796/9796 co-relation queries the response was YES. [2022-11-18 20:49:29,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 863 events. 300/863 cut-off events. For 9796/9796 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4553 event pairs, 50 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 5498. Up to 560 conditions per place. [2022-11-18 20:49:29,029 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 187 selfloop transitions, 86 changer transitions 30/342 dead transitions. [2022-11-18 20:49:29,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 342 transitions, 4187 flow [2022-11-18 20:49:29,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:49:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:49:29,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1814 transitions. [2022-11-18 20:49:29,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.567584480600751 [2022-11-18 20:49:29,032 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1814 transitions. [2022-11-18 20:49:29,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1814 transitions. [2022-11-18 20:49:29,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:29,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1814 transitions. [2022-11-18 20:49:29,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.35294117647059) internal successors, (1814), 34 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:29,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:29,037 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:29,037 INFO L175 Difference]: Start difference. First operand has 345 places, 288 transitions, 2966 flow. Second operand 34 states and 1814 transitions. [2022-11-18 20:49:29,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 342 transitions, 4187 flow [2022-11-18 20:49:29,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 342 transitions, 3843 flow, removed 38 selfloop flow, removed 38 redundant places. [2022-11-18 20:49:29,102 INFO L231 Difference]: Finished difference. Result has 337 places, 296 transitions, 3029 flow [2022-11-18 20:49:29,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3029, PETRI_PLACES=337, PETRI_TRANSITIONS=296} [2022-11-18 20:49:29,103 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 249 predicate places. [2022-11-18 20:49:29,103 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 296 transitions, 3029 flow [2022-11-18 20:49:29,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:29,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:29,104 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:29,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-18 20:49:29,104 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:29,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:29,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1694596224, now seen corresponding path program 50 times [2022-11-18 20:49:29,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:29,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393422949] [2022-11-18 20:49:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:29,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:29,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:29,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393422949] [2022-11-18 20:49:29,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393422949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:29,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:29,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:49:29,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262660966] [2022-11-18 20:49:29,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:29,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:49:29,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:29,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:49:29,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:29,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:29,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 296 transitions, 3029 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:29,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:29,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:29,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:31,339 INFO L130 PetriNetUnfolder]: 306/885 cut-off events. [2022-11-18 20:49:31,340 INFO L131 PetriNetUnfolder]: For 9888/9888 co-relation queries the response was YES. [2022-11-18 20:49:31,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5651 conditions, 885 events. 306/885 cut-off events. For 9888/9888 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4760 event pairs, 62 based on Foata normal form. 1/884 useless extension candidates. Maximal degree in co-relation 5539. Up to 583 conditions per place. [2022-11-18 20:49:31,349 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 195 selfloop transitions, 85 changer transitions 34/353 dead transitions. [2022-11-18 20:49:31,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 353 transitions, 4236 flow [2022-11-18 20:49:31,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:49:31,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:49:31,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1910 transitions. [2022-11-18 20:49:31,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644208037825059 [2022-11-18 20:49:31,351 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1910 transitions. [2022-11-18 20:49:31,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1910 transitions. [2022-11-18 20:49:31,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:31,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1910 transitions. [2022-11-18 20:49:31,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.05555555555556) internal successors, (1910), 36 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:31,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:31,355 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:31,355 INFO L175 Difference]: Start difference. First operand has 337 places, 296 transitions, 3029 flow. Second operand 36 states and 1910 transitions. [2022-11-18 20:49:31,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 353 transitions, 4236 flow [2022-11-18 20:49:31,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 353 transitions, 3925 flow, removed 84 selfloop flow, removed 31 redundant places. [2022-11-18 20:49:31,418 INFO L231 Difference]: Finished difference. Result has 348 places, 306 transitions, 3145 flow [2022-11-18 20:49:31,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3145, PETRI_PLACES=348, PETRI_TRANSITIONS=306} [2022-11-18 20:49:31,419 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 260 predicate places. [2022-11-18 20:49:31,419 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 306 transitions, 3145 flow [2022-11-18 20:49:31,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:31,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:31,419 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:31,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-18 20:49:31,419 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:31,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2087787960, now seen corresponding path program 51 times [2022-11-18 20:49:31,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:31,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642403578] [2022-11-18 20:49:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:31,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:32,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:32,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642403578] [2022-11-18 20:49:32,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642403578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:32,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:32,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:49:32,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719095057] [2022-11-18 20:49:32,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:32,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:49:32,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:32,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:49:32,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:49:32,038 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:32,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 306 transitions, 3145 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:32,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:32,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:32,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:34,355 INFO L130 PetriNetUnfolder]: 348/998 cut-off events. [2022-11-18 20:49:34,355 INFO L131 PetriNetUnfolder]: For 11542/11542 co-relation queries the response was YES. [2022-11-18 20:49:34,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6391 conditions, 998 events. 348/998 cut-off events. For 11542/11542 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5516 event pairs, 36 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 6275. Up to 612 conditions per place. [2022-11-18 20:49:34,367 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 216 selfloop transitions, 155 changer transitions 22/432 dead transitions. [2022-11-18 20:49:34,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 432 transitions, 5466 flow [2022-11-18 20:49:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-18 20:49:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-18 20:49:34,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2728 transitions. [2022-11-18 20:49:34,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.55810147299509 [2022-11-18 20:49:34,370 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 2728 transitions. [2022-11-18 20:49:34,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 2728 transitions. [2022-11-18 20:49:34,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:34,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 2728 transitions. [2022-11-18 20:49:34,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 52.46153846153846) internal successors, (2728), 52 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:34,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 94.0) internal successors, (4982), 53 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:34,375 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 94.0) internal successors, (4982), 53 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:34,375 INFO L175 Difference]: Start difference. First operand has 348 places, 306 transitions, 3145 flow. Second operand 52 states and 2728 transitions. [2022-11-18 20:49:34,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 432 transitions, 5466 flow [2022-11-18 20:49:34,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 432 transitions, 5210 flow, removed 73 selfloop flow, removed 28 redundant places. [2022-11-18 20:49:34,450 INFO L231 Difference]: Finished difference. Result has 381 places, 389 transitions, 4519 flow [2022-11-18 20:49:34,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=4519, PETRI_PLACES=381, PETRI_TRANSITIONS=389} [2022-11-18 20:49:34,451 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 293 predicate places. [2022-11-18 20:49:34,451 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 389 transitions, 4519 flow [2022-11-18 20:49:34,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:34,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:34,451 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:34,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-18 20:49:34,452 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:34,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash -478736964, now seen corresponding path program 52 times [2022-11-18 20:49:34,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:34,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888372858] [2022-11-18 20:49:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:34,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:35,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:35,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888372858] [2022-11-18 20:49:35,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888372858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:35,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:35,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:49:35,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46252264] [2022-11-18 20:49:35,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:35,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:49:35,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:35,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:49:35,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:35,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:35,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 389 transitions, 4519 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:35,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:35,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:35,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:36,875 INFO L130 PetriNetUnfolder]: 355/1033 cut-off events. [2022-11-18 20:49:36,875 INFO L131 PetriNetUnfolder]: For 13178/13178 co-relation queries the response was YES. [2022-11-18 20:49:36,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6995 conditions, 1033 events. 355/1033 cut-off events. For 13178/13178 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5925 event pairs, 49 based on Foata normal form. 1/1032 useless extension candidates. Maximal degree in co-relation 6869. Up to 673 conditions per place. [2022-11-18 20:49:36,889 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 265 selfloop transitions, 110 changer transitions 29/443 dead transitions. [2022-11-18 20:49:36,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 443 transitions, 5944 flow [2022-11-18 20:49:36,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:49:36,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 20:49:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2066 transitions. [2022-11-18 20:49:36,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.563557010365521 [2022-11-18 20:49:36,892 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2066 transitions. [2022-11-18 20:49:36,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2066 transitions. [2022-11-18 20:49:36,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:36,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2066 transitions. [2022-11-18 20:49:36,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.97435897435897) internal successors, (2066), 39 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:36,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:36,897 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:36,897 INFO L175 Difference]: Start difference. First operand has 381 places, 389 transitions, 4519 flow. Second operand 39 states and 2066 transitions. [2022-11-18 20:49:36,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 443 transitions, 5944 flow [2022-11-18 20:49:37,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 443 transitions, 5178 flow, removed 332 selfloop flow, removed 21 redundant places. [2022-11-18 20:49:37,007 INFO L231 Difference]: Finished difference. Result has 402 places, 398 transitions, 4195 flow [2022-11-18 20:49:37,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3777, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4195, PETRI_PLACES=402, PETRI_TRANSITIONS=398} [2022-11-18 20:49:37,008 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 314 predicate places. [2022-11-18 20:49:37,008 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 398 transitions, 4195 flow [2022-11-18 20:49:37,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:37,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:37,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:37,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-18 20:49:37,008 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:37,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:37,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1724597186, now seen corresponding path program 53 times [2022-11-18 20:49:37,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:37,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688099829] [2022-11-18 20:49:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:37,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:37,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:37,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688099829] [2022-11-18 20:49:37,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688099829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:37,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:37,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:49:37,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722874849] [2022-11-18 20:49:37,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:37,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:49:37,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:37,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:49:37,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:49:37,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:37,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 398 transitions, 4195 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:37,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:37,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:37,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:39,724 INFO L130 PetriNetUnfolder]: 390/1139 cut-off events. [2022-11-18 20:49:39,725 INFO L131 PetriNetUnfolder]: For 15081/15081 co-relation queries the response was YES. [2022-11-18 20:49:39,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7552 conditions, 1139 events. 390/1139 cut-off events. For 15081/15081 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6729 event pairs, 43 based on Foata normal form. 1/1138 useless extension candidates. Maximal degree in co-relation 7420. Up to 658 conditions per place. [2022-11-18 20:49:39,740 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 236 selfloop transitions, 203 changer transitions 23/501 dead transitions. [2022-11-18 20:49:39,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 501 transitions, 6622 flow [2022-11-18 20:49:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-18 20:49:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-18 20:49:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2426 transitions. [2022-11-18 20:49:39,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.561054579093432 [2022-11-18 20:49:39,743 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2426 transitions. [2022-11-18 20:49:39,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2426 transitions. [2022-11-18 20:49:39,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:39,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2426 transitions. [2022-11-18 20:49:39,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 52.73913043478261) internal successors, (2426), 46 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:39,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:39,747 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:39,747 INFO L175 Difference]: Start difference. First operand has 402 places, 398 transitions, 4195 flow. Second operand 46 states and 2426 transitions. [2022-11-18 20:49:39,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 501 transitions, 6622 flow [2022-11-18 20:49:39,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 501 transitions, 6257 flow, removed 113 selfloop flow, removed 34 redundant places. [2022-11-18 20:49:39,851 INFO L231 Difference]: Finished difference. Result has 419 places, 452 transitions, 5421 flow [2022-11-18 20:49:39,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3982, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5421, PETRI_PLACES=419, PETRI_TRANSITIONS=452} [2022-11-18 20:49:39,852 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 331 predicate places. [2022-11-18 20:49:39,852 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 452 transitions, 5421 flow [2022-11-18 20:49:39,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:39,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:39,852 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:39,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-18 20:49:39,853 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:39,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1113514368, now seen corresponding path program 54 times [2022-11-18 20:49:39,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:39,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026737303] [2022-11-18 20:49:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:39,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:40,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:40,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026737303] [2022-11-18 20:49:40,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026737303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:40,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:40,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:49:40,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176468486] [2022-11-18 20:49:40,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:40,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:49:40,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:49:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:40,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:40,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 452 transitions, 5421 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:40,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:40,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:40,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:42,112 INFO L130 PetriNetUnfolder]: 395/1152 cut-off events. [2022-11-18 20:49:42,113 INFO L131 PetriNetUnfolder]: For 17145/17145 co-relation queries the response was YES. [2022-11-18 20:49:42,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8158 conditions, 1152 events. 395/1152 cut-off events. For 17145/17145 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6870 event pairs, 41 based on Foata normal form. 1/1151 useless extension candidates. Maximal degree in co-relation 8020. Up to 780 conditions per place. [2022-11-18 20:49:42,135 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 327 selfloop transitions, 98 changer transitions 36/500 dead transitions. [2022-11-18 20:49:42,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 500 transitions, 6884 flow [2022-11-18 20:49:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:49:42,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:49:42,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-11-18 20:49:42,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-11-18 20:49:42,139 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-11-18 20:49:42,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-11-18 20:49:42,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:42,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-11-18 20:49:42,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:42,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:42,145 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:42,145 INFO L175 Difference]: Start difference. First operand has 419 places, 452 transitions, 5421 flow. Second operand 36 states and 1912 transitions. [2022-11-18 20:49:42,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 500 transitions, 6884 flow [2022-11-18 20:49:42,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 500 transitions, 6349 flow, removed 202 selfloop flow, removed 28 redundant places. [2022-11-18 20:49:42,371 INFO L231 Difference]: Finished difference. Result has 434 places, 452 transitions, 5213 flow [2022-11-18 20:49:42,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4930, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5213, PETRI_PLACES=434, PETRI_TRANSITIONS=452} [2022-11-18 20:49:42,373 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 346 predicate places. [2022-11-18 20:49:42,373 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 452 transitions, 5213 flow [2022-11-18 20:49:42,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:42,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:42,373 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:42,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-18 20:49:42,374 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:42,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:42,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1232454236, now seen corresponding path program 55 times [2022-11-18 20:49:42,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:42,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952849755] [2022-11-18 20:49:42,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:42,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:42,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:42,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952849755] [2022-11-18 20:49:42,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952849755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:42,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:42,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:49:42,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411848626] [2022-11-18 20:49:42,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:42,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:49:42,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:42,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:49:42,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:42,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:42,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 452 transitions, 5213 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:42,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:42,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:42,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:44,811 INFO L130 PetriNetUnfolder]: 398/1162 cut-off events. [2022-11-18 20:49:44,811 INFO L131 PetriNetUnfolder]: For 16289/16289 co-relation queries the response was YES. [2022-11-18 20:49:44,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8113 conditions, 1162 events. 398/1162 cut-off events. For 16289/16289 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7031 event pairs, 39 based on Foata normal form. 1/1161 useless extension candidates. Maximal degree in co-relation 7966. Up to 751 conditions per place. [2022-11-18 20:49:44,827 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 303 selfloop transitions, 141 changer transitions 30/513 dead transitions. [2022-11-18 20:49:44,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 513 transitions, 7000 flow [2022-11-18 20:49:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:49:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-18 20:49:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2168 transitions. [2022-11-18 20:49:44,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5625324338349766 [2022-11-18 20:49:44,830 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2168 transitions. [2022-11-18 20:49:44,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2168 transitions. [2022-11-18 20:49:44,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:44,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2168 transitions. [2022-11-18 20:49:44,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.8780487804878) internal successors, (2168), 41 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:44,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:44,834 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:44,834 INFO L175 Difference]: Start difference. First operand has 434 places, 452 transitions, 5213 flow. Second operand 41 states and 2168 transitions. [2022-11-18 20:49:44,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 513 transitions, 7000 flow [2022-11-18 20:49:44,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 513 transitions, 6624 flow, removed 63 selfloop flow, removed 37 redundant places. [2022-11-18 20:49:44,976 INFO L231 Difference]: Finished difference. Result has 438 places, 465 transitions, 5536 flow [2022-11-18 20:49:44,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4899, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=5536, PETRI_PLACES=438, PETRI_TRANSITIONS=465} [2022-11-18 20:49:44,977 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 350 predicate places. [2022-11-18 20:49:44,977 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 465 transitions, 5536 flow [2022-11-18 20:49:44,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:44,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:44,977 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:44,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-18 20:49:44,978 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:44,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:44,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1955632098, now seen corresponding path program 56 times [2022-11-18 20:49:44,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:44,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896396412] [2022-11-18 20:49:44,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:44,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:45,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:45,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896396412] [2022-11-18 20:49:45,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896396412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:45,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:45,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:49:45,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50469798] [2022-11-18 20:49:45,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:45,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:49:45,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:49:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:49:45,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:45,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 465 transitions, 5536 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:45,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:45,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:45,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:47,504 INFO L130 PetriNetUnfolder]: 396/1162 cut-off events. [2022-11-18 20:49:47,504 INFO L131 PetriNetUnfolder]: For 15161/15161 co-relation queries the response was YES. [2022-11-18 20:49:47,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8061 conditions, 1162 events. 396/1162 cut-off events. For 15161/15161 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7060 event pairs, 46 based on Foata normal form. 1/1161 useless extension candidates. Maximal degree in co-relation 7918. Up to 756 conditions per place. [2022-11-18 20:49:47,518 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 308 selfloop transitions, 128 changer transitions 36/511 dead transitions. [2022-11-18 20:49:47,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 511 transitions, 7017 flow [2022-11-18 20:49:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:49:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 20:49:47,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2316 transitions. [2022-11-18 20:49:47,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5599613152804642 [2022-11-18 20:49:47,521 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2316 transitions. [2022-11-18 20:49:47,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2316 transitions. [2022-11-18 20:49:47,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:47,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2316 transitions. [2022-11-18 20:49:47,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.63636363636363) internal successors, (2316), 44 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:47,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:47,529 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:47,529 INFO L175 Difference]: Start difference. First operand has 438 places, 465 transitions, 5536 flow. Second operand 44 states and 2316 transitions. [2022-11-18 20:49:47,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 511 transitions, 7017 flow [2022-11-18 20:49:47,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 511 transitions, 6694 flow, removed 90 selfloop flow, removed 34 redundant places. [2022-11-18 20:49:47,743 INFO L231 Difference]: Finished difference. Result has 453 places, 464 transitions, 5620 flow [2022-11-18 20:49:47,744 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5263, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5620, PETRI_PLACES=453, PETRI_TRANSITIONS=464} [2022-11-18 20:49:47,744 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 365 predicate places. [2022-11-18 20:49:47,745 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 464 transitions, 5620 flow [2022-11-18 20:49:47,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:47,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:47,745 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:47,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-18 20:49:47,746 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:47,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:47,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1157197320, now seen corresponding path program 57 times [2022-11-18 20:49:47,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:47,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13716048] [2022-11-18 20:49:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:47,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:48,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:48,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13716048] [2022-11-18 20:49:48,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13716048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:48,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:48,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:49:48,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290780982] [2022-11-18 20:49:48,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:48,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:49:48,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:49:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:48,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:48,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 464 transitions, 5620 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:48,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:48,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:48,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:50,084 INFO L130 PetriNetUnfolder]: 392/1160 cut-off events. [2022-11-18 20:49:50,084 INFO L131 PetriNetUnfolder]: For 14657/14657 co-relation queries the response was YES. [2022-11-18 20:49:50,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8117 conditions, 1160 events. 392/1160 cut-off events. For 14657/14657 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7002 event pairs, 43 based on Foata normal form. 1/1159 useless extension candidates. Maximal degree in co-relation 7967. Up to 782 conditions per place. [2022-11-18 20:49:50,100 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 335 selfloop transitions, 108 changer transitions 27/509 dead transitions. [2022-11-18 20:49:50,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 509 transitions, 7124 flow [2022-11-18 20:49:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:49:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:49:50,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1859 transitions. [2022-11-18 20:49:50,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650455927051672 [2022-11-18 20:49:50,103 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1859 transitions. [2022-11-18 20:49:50,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1859 transitions. [2022-11-18 20:49:50,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:50,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1859 transitions. [2022-11-18 20:49:50,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.114285714285714) internal successors, (1859), 35 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:50,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:50,106 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:50,107 INFO L175 Difference]: Start difference. First operand has 453 places, 464 transitions, 5620 flow. Second operand 35 states and 1859 transitions. [2022-11-18 20:49:50,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 509 transitions, 7124 flow [2022-11-18 20:49:50,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 509 transitions, 6731 flow, removed 46 selfloop flow, removed 41 redundant places. [2022-11-18 20:49:50,238 INFO L231 Difference]: Finished difference. Result has 445 places, 467 transitions, 5625 flow [2022-11-18 20:49:50,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5269, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5625, PETRI_PLACES=445, PETRI_TRANSITIONS=467} [2022-11-18 20:49:50,239 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 357 predicate places. [2022-11-18 20:49:50,239 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 467 transitions, 5625 flow [2022-11-18 20:49:50,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:50,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:50,240 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:50,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-18 20:49:50,240 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:50,240 INFO L85 PathProgramCache]: Analyzing trace with hash -519573206, now seen corresponding path program 58 times [2022-11-18 20:49:50,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:50,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346264174] [2022-11-18 20:49:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:50,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:50,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:50,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346264174] [2022-11-18 20:49:50,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346264174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:50,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:50,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:49:50,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575313397] [2022-11-18 20:49:50,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:50,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:49:50,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:50,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:49:50,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:50,700 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:50,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 467 transitions, 5625 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:50,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:50,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:50,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:52,378 INFO L130 PetriNetUnfolder]: 399/1173 cut-off events. [2022-11-18 20:49:52,379 INFO L131 PetriNetUnfolder]: For 15695/15695 co-relation queries the response was YES. [2022-11-18 20:49:52,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8261 conditions, 1173 events. 399/1173 cut-off events. For 15695/15695 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7095 event pairs, 54 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 8112. Up to 784 conditions per place. [2022-11-18 20:49:52,399 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 349 selfloop transitions, 103 changer transitions 29/520 dead transitions. [2022-11-18 20:49:52,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 520 transitions, 7417 flow [2022-11-18 20:49:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:49:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:49:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-18 20:49:52,402 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-18 20:49:52,402 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-18 20:49:52,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-18 20:49:52,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:52,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-18 20:49:52,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:52,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:52,406 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:52,406 INFO L175 Difference]: Start difference. First operand has 445 places, 467 transitions, 5625 flow. Second operand 34 states and 1812 transitions. [2022-11-18 20:49:52,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 520 transitions, 7417 flow [2022-11-18 20:49:52,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 520 transitions, 7167 flow, removed 50 selfloop flow, removed 31 redundant places. [2022-11-18 20:49:52,616 INFO L231 Difference]: Finished difference. Result has 451 places, 478 transitions, 5939 flow [2022-11-18 20:49:52,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5411, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5939, PETRI_PLACES=451, PETRI_TRANSITIONS=478} [2022-11-18 20:49:52,618 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 363 predicate places. [2022-11-18 20:49:52,618 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 478 transitions, 5939 flow [2022-11-18 20:49:52,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:52,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:52,619 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:52,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-18 20:49:52,619 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:52,620 INFO L85 PathProgramCache]: Analyzing trace with hash 32107294, now seen corresponding path program 59 times [2022-11-18 20:49:52,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:52,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021078812] [2022-11-18 20:49:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:52,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:53,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:53,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021078812] [2022-11-18 20:49:53,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021078812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:53,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:53,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:49:53,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052065027] [2022-11-18 20:49:53,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:53,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:49:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:53,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:49:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:49:53,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:53,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 478 transitions, 5939 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:53,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:53,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:53,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:55,377 INFO L130 PetriNetUnfolder]: 400/1173 cut-off events. [2022-11-18 20:49:55,377 INFO L131 PetriNetUnfolder]: For 17591/17591 co-relation queries the response was YES. [2022-11-18 20:49:55,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8497 conditions, 1173 events. 400/1173 cut-off events. For 17591/17591 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7102 event pairs, 41 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 8345. Up to 760 conditions per place. [2022-11-18 20:49:55,394 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 308 selfloop transitions, 150 changer transitions 27/524 dead transitions. [2022-11-18 20:49:55,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 524 transitions, 7540 flow [2022-11-18 20:49:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 20:49:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-18 20:49:55,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2264 transitions. [2022-11-18 20:49:55,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601187530925285 [2022-11-18 20:49:55,397 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2264 transitions. [2022-11-18 20:49:55,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2264 transitions. [2022-11-18 20:49:55,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:55,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2264 transitions. [2022-11-18 20:49:55,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.651162790697676) internal successors, (2264), 43 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:55,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:55,402 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:55,402 INFO L175 Difference]: Start difference. First operand has 451 places, 478 transitions, 5939 flow. Second operand 43 states and 2264 transitions. [2022-11-18 20:49:55,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 524 transitions, 7540 flow [2022-11-18 20:49:55,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 524 transitions, 7101 flow, removed 136 selfloop flow, removed 28 redundant places. [2022-11-18 20:49:55,550 INFO L231 Difference]: Finished difference. Result has 467 places, 481 transitions, 6029 flow [2022-11-18 20:49:55,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5562, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=6029, PETRI_PLACES=467, PETRI_TRANSITIONS=481} [2022-11-18 20:49:55,551 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 379 predicate places. [2022-11-18 20:49:55,551 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 481 transitions, 6029 flow [2022-11-18 20:49:55,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:55,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:55,551 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:55,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-18 20:49:55,552 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:55,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:55,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1948725806, now seen corresponding path program 60 times [2022-11-18 20:49:55,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:55,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741735039] [2022-11-18 20:49:55,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:55,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:55,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:55,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:55,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741735039] [2022-11-18 20:49:55,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741735039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:55,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:55,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:49:55,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2265993] [2022-11-18 20:49:55,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:55,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:49:55,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:55,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:49:55,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:49:55,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:55,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 481 transitions, 6029 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:55,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:55,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:55,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:57,626 INFO L130 PetriNetUnfolder]: 403/1183 cut-off events. [2022-11-18 20:49:57,626 INFO L131 PetriNetUnfolder]: For 17161/17161 co-relation queries the response was YES. [2022-11-18 20:49:57,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8608 conditions, 1183 events. 403/1183 cut-off events. For 17161/17161 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7199 event pairs, 49 based on Foata normal form. 1/1182 useless extension candidates. Maximal degree in co-relation 8454. Up to 807 conditions per place. [2022-11-18 20:49:57,645 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 358 selfloop transitions, 102 changer transitions 27/526 dead transitions. [2022-11-18 20:49:57,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 526 transitions, 7649 flow [2022-11-18 20:49:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:49:57,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:49:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1707 transitions. [2022-11-18 20:49:57,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5674867021276596 [2022-11-18 20:49:57,648 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1707 transitions. [2022-11-18 20:49:57,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1707 transitions. [2022-11-18 20:49:57,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:57,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1707 transitions. [2022-11-18 20:49:57,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.34375) internal successors, (1707), 32 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:57,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:57,656 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:57,656 INFO L175 Difference]: Start difference. First operand has 467 places, 481 transitions, 6029 flow. Second operand 32 states and 1707 transitions. [2022-11-18 20:49:57,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 526 transitions, 7649 flow [2022-11-18 20:49:57,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 526 transitions, 7323 flow, removed 61 selfloop flow, removed 39 redundant places. [2022-11-18 20:49:57,901 INFO L231 Difference]: Finished difference. Result has 462 places, 488 transitions, 6190 flow [2022-11-18 20:49:57,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5759, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6190, PETRI_PLACES=462, PETRI_TRANSITIONS=488} [2022-11-18 20:49:57,902 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 374 predicate places. [2022-11-18 20:49:57,902 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 488 transitions, 6190 flow [2022-11-18 20:49:57,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:57,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:57,903 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:57,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-18 20:49:57,903 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:49:57,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:57,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1516929996, now seen corresponding path program 61 times [2022-11-18 20:49:57,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:57,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798947132] [2022-11-18 20:49:57,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:57,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:58,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:58,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798947132] [2022-11-18 20:49:58,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798947132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:58,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:58,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:49:58,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487241428] [2022-11-18 20:49:58,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:58,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:49:58,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:58,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:49:58,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:58,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:49:58,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 488 transitions, 6190 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:58,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:58,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:49:58,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:00,301 INFO L130 PetriNetUnfolder]: 404/1196 cut-off events. [2022-11-18 20:50:00,302 INFO L131 PetriNetUnfolder]: For 17786/17786 co-relation queries the response was YES. [2022-11-18 20:50:00,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8704 conditions, 1196 events. 404/1196 cut-off events. For 17786/17786 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7325 event pairs, 50 based on Foata normal form. 1/1195 useless extension candidates. Maximal degree in co-relation 8548. Up to 808 conditions per place. [2022-11-18 20:50:00,323 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 356 selfloop transitions, 107 changer transitions 27/529 dead transitions. [2022-11-18 20:50:00,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 529 transitions, 7735 flow [2022-11-18 20:50:00,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:50:00,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:50:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1757 transitions. [2022-11-18 20:50:00,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664087685364281 [2022-11-18 20:50:00,326 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1757 transitions. [2022-11-18 20:50:00,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1757 transitions. [2022-11-18 20:50:00,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:00,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1757 transitions. [2022-11-18 20:50:00,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.24242424242424) internal successors, (1757), 33 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:00,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:00,333 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:00,333 INFO L175 Difference]: Start difference. First operand has 462 places, 488 transitions, 6190 flow. Second operand 33 states and 1757 transitions. [2022-11-18 20:50:00,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 529 transitions, 7735 flow [2022-11-18 20:50:00,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 529 transitions, 7449 flow, removed 72 selfloop flow, removed 26 redundant places. [2022-11-18 20:50:00,520 INFO L231 Difference]: Finished difference. Result has 471 places, 491 transitions, 6300 flow [2022-11-18 20:50:00,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5941, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6300, PETRI_PLACES=471, PETRI_TRANSITIONS=491} [2022-11-18 20:50:00,520 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 383 predicate places. [2022-11-18 20:50:00,521 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 491 transitions, 6300 flow [2022-11-18 20:50:00,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:00,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:00,521 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:00,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-18 20:50:00,521 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:00,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:00,522 INFO L85 PathProgramCache]: Analyzing trace with hash 920423182, now seen corresponding path program 62 times [2022-11-18 20:50:00,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:00,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984997375] [2022-11-18 20:50:00,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:00,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:01,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:01,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984997375] [2022-11-18 20:50:01,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984997375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:01,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:01,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:50:01,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600552962] [2022-11-18 20:50:01,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:01,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:50:01,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:50:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:50:01,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:01,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 491 transitions, 6300 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:01,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:01,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:01,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:02,933 INFO L130 PetriNetUnfolder]: 406/1197 cut-off events. [2022-11-18 20:50:02,933 INFO L131 PetriNetUnfolder]: For 18036/18036 co-relation queries the response was YES. [2022-11-18 20:50:02,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8777 conditions, 1197 events. 406/1197 cut-off events. For 18036/18036 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7315 event pairs, 40 based on Foata normal form. 1/1197 useless extension candidates. Maximal degree in co-relation 8619. Up to 840 conditions per place. [2022-11-18 20:50:02,950 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 379 selfloop transitions, 94 changer transitions 22/534 dead transitions. [2022-11-18 20:50:02,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 534 transitions, 7799 flow [2022-11-18 20:50:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:50:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:50:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1900 transitions. [2022-11-18 20:50:02,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5614657210401891 [2022-11-18 20:50:02,953 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1900 transitions. [2022-11-18 20:50:02,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1900 transitions. [2022-11-18 20:50:02,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:02,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1900 transitions. [2022-11-18 20:50:02,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.77777777777778) internal successors, (1900), 36 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:02,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:02,957 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:02,957 INFO L175 Difference]: Start difference. First operand has 471 places, 491 transitions, 6300 flow. Second operand 36 states and 1900 transitions. [2022-11-18 20:50:02,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 534 transitions, 7799 flow [2022-11-18 20:50:03,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 534 transitions, 7513 flow, removed 64 selfloop flow, removed 29 redundant places. [2022-11-18 20:50:03,116 INFO L231 Difference]: Finished difference. Result has 483 places, 500 transitions, 6463 flow [2022-11-18 20:50:03,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6058, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6463, PETRI_PLACES=483, PETRI_TRANSITIONS=500} [2022-11-18 20:50:03,116 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 395 predicate places. [2022-11-18 20:50:03,116 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 500 transitions, 6463 flow [2022-11-18 20:50:03,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:03,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:03,117 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:03,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-18 20:50:03,117 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:03,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1139507504, now seen corresponding path program 63 times [2022-11-18 20:50:03,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:03,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191699506] [2022-11-18 20:50:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:03,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:03,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:03,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191699506] [2022-11-18 20:50:03,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191699506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:03,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:03,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:50:03,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795806036] [2022-11-18 20:50:03,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:03,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:50:03,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:50:03,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:50:03,614 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:03,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 500 transitions, 6463 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:03,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:03,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:03,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:05,406 INFO L130 PetriNetUnfolder]: 399/1195 cut-off events. [2022-11-18 20:50:05,406 INFO L131 PetriNetUnfolder]: For 17685/17685 co-relation queries the response was YES. [2022-11-18 20:50:05,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8718 conditions, 1195 events. 399/1195 cut-off events. For 17685/17685 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7342 event pairs, 44 based on Foata normal form. 1/1194 useless extension candidates. Maximal degree in co-relation 8555. Up to 844 conditions per place. [2022-11-18 20:50:05,424 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 380 selfloop transitions, 88 changer transitions 19/526 dead transitions. [2022-11-18 20:50:05,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 526 transitions, 7610 flow [2022-11-18 20:50:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:50:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:50:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1791 transitions. [2022-11-18 20:50:05,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5603879849812266 [2022-11-18 20:50:05,427 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1791 transitions. [2022-11-18 20:50:05,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1791 transitions. [2022-11-18 20:50:05,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:05,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1791 transitions. [2022-11-18 20:50:05,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.6764705882353) internal successors, (1791), 34 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:05,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:05,431 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:05,431 INFO L175 Difference]: Start difference. First operand has 483 places, 500 transitions, 6463 flow. Second operand 34 states and 1791 transitions. [2022-11-18 20:50:05,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 526 transitions, 7610 flow [2022-11-18 20:50:05,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 526 transitions, 7384 flow, removed 56 selfloop flow, removed 28 redundant places. [2022-11-18 20:50:05,720 INFO L231 Difference]: Finished difference. Result has 489 places, 497 transitions, 6418 flow [2022-11-18 20:50:05,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6249, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6418, PETRI_PLACES=489, PETRI_TRANSITIONS=497} [2022-11-18 20:50:05,721 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 401 predicate places. [2022-11-18 20:50:05,721 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 497 transitions, 6418 flow [2022-11-18 20:50:05,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:05,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:05,722 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:05,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-18 20:50:05,722 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:05,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash -512865626, now seen corresponding path program 64 times [2022-11-18 20:50:05,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:05,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091104736] [2022-11-18 20:50:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:05,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:06,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091104736] [2022-11-18 20:50:06,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091104736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:06,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:06,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:50:06,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302323599] [2022-11-18 20:50:06,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:06,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:50:06,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:50:06,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:50:06,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:06,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 497 transitions, 6418 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:06,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:06,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:06,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:07,999 INFO L130 PetriNetUnfolder]: 406/1214 cut-off events. [2022-11-18 20:50:07,999 INFO L131 PetriNetUnfolder]: For 18057/18057 co-relation queries the response was YES. [2022-11-18 20:50:08,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8906 conditions, 1214 events. 406/1214 cut-off events. For 18057/18057 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7506 event pairs, 52 based on Foata normal form. 1/1212 useless extension candidates. Maximal degree in co-relation 8742. Up to 824 conditions per place. [2022-11-18 20:50:08,017 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 369 selfloop transitions, 107 changer transitions 22/537 dead transitions. [2022-11-18 20:50:08,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 537 transitions, 7911 flow [2022-11-18 20:50:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:50:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:50:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-18 20:50:08,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-18 20:50:08,019 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-18 20:50:08,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-18 20:50:08,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:08,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-18 20:50:08,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:08,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:08,023 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:08,023 INFO L175 Difference]: Start difference. First operand has 489 places, 497 transitions, 6418 flow. Second operand 35 states and 1858 transitions. [2022-11-18 20:50:08,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 537 transitions, 7911 flow [2022-11-18 20:50:08,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 537 transitions, 7635 flow, removed 22 selfloop flow, removed 36 redundant places. [2022-11-18 20:50:08,190 INFO L231 Difference]: Finished difference. Result has 490 places, 503 transitions, 6576 flow [2022-11-18 20:50:08,190 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6166, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6576, PETRI_PLACES=490, PETRI_TRANSITIONS=503} [2022-11-18 20:50:08,190 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 402 predicate places. [2022-11-18 20:50:08,191 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 503 transitions, 6576 flow [2022-11-18 20:50:08,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:08,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:08,191 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:08,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-18 20:50:08,192 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:08,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:08,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1877530548, now seen corresponding path program 65 times [2022-11-18 20:50:08,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:08,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450650181] [2022-11-18 20:50:08,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:08,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:08,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:08,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450650181] [2022-11-18 20:50:08,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450650181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:08,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:08,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:50:08,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588279382] [2022-11-18 20:50:08,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:08,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:50:08,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:08,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:50:08,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:50:08,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:08,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 503 transitions, 6576 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:08,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:08,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:08,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:10,338 INFO L130 PetriNetUnfolder]: 409/1245 cut-off events. [2022-11-18 20:50:10,338 INFO L131 PetriNetUnfolder]: For 19497/19497 co-relation queries the response was YES. [2022-11-18 20:50:10,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9216 conditions, 1245 events. 409/1245 cut-off events. For 19497/19497 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7900 event pairs, 59 based on Foata normal form. 1/1244 useless extension candidates. Maximal degree in co-relation 9050. Up to 863 conditions per place. [2022-11-18 20:50:10,356 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 389 selfloop transitions, 84 changer transitions 31/543 dead transitions. [2022-11-18 20:50:10,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 543 transitions, 8153 flow [2022-11-18 20:50:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:50:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:50:10,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1804 transitions. [2022-11-18 20:50:10,359 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644555694618273 [2022-11-18 20:50:10,359 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1804 transitions. [2022-11-18 20:50:10,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1804 transitions. [2022-11-18 20:50:10,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:10,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1804 transitions. [2022-11-18 20:50:10,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.05882352941177) internal successors, (1804), 34 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:10,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:10,364 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:10,364 INFO L175 Difference]: Start difference. First operand has 490 places, 503 transitions, 6576 flow. Second operand 34 states and 1804 transitions. [2022-11-18 20:50:10,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 543 transitions, 8153 flow [2022-11-18 20:50:10,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 543 transitions, 7873 flow, removed 71 selfloop flow, removed 28 redundant places. [2022-11-18 20:50:10,552 INFO L231 Difference]: Finished difference. Result has 499 places, 501 transitions, 6575 flow [2022-11-18 20:50:10,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6575, PETRI_PLACES=499, PETRI_TRANSITIONS=501} [2022-11-18 20:50:10,553 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 411 predicate places. [2022-11-18 20:50:10,553 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 501 transitions, 6575 flow [2022-11-18 20:50:10,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:10,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:10,554 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:10,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-18 20:50:10,554 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1524726466, now seen corresponding path program 66 times [2022-11-18 20:50:10,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:10,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740775508] [2022-11-18 20:50:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:11,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:11,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740775508] [2022-11-18 20:50:11,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740775508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:11,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:11,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:50:11,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525317337] [2022-11-18 20:50:11,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:11,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:50:11,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:11,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:50:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:50:11,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:11,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 501 transitions, 6575 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:11,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:11,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:11,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:13,646 INFO L130 PetriNetUnfolder]: 442/1380 cut-off events. [2022-11-18 20:50:13,646 INFO L131 PetriNetUnfolder]: For 22184/22184 co-relation queries the response was YES. [2022-11-18 20:50:13,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10069 conditions, 1380 events. 442/1380 cut-off events. For 22184/22184 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9128 event pairs, 54 based on Foata normal form. 1/1379 useless extension candidates. Maximal degree in co-relation 9898. Up to 830 conditions per place. [2022-11-18 20:50:13,667 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 365 selfloop transitions, 189 changer transitions 22/615 dead transitions. [2022-11-18 20:50:13,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 615 transitions, 9319 flow [2022-11-18 20:50:13,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 20:50:13,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 20:50:13,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2575 transitions. [2022-11-18 20:50:13,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5590534085974815 [2022-11-18 20:50:13,670 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 2575 transitions. [2022-11-18 20:50:13,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 2575 transitions. [2022-11-18 20:50:13,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:13,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 2575 transitions. [2022-11-18 20:50:13,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 52.55102040816327) internal successors, (2575), 49 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:13,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 94.0) internal successors, (4700), 50 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:13,675 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 94.0) internal successors, (4700), 50 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:13,675 INFO L175 Difference]: Start difference. First operand has 499 places, 501 transitions, 6575 flow. Second operand 49 states and 2575 transitions. [2022-11-18 20:50:13,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 615 transitions, 9319 flow [2022-11-18 20:50:13,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 615 transitions, 9031 flow, removed 74 selfloop flow, removed 32 redundant places. [2022-11-18 20:50:13,883 INFO L231 Difference]: Finished difference. Result has 516 places, 568 transitions, 7928 flow [2022-11-18 20:50:13,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6355, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7928, PETRI_PLACES=516, PETRI_TRANSITIONS=568} [2022-11-18 20:50:13,884 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 428 predicate places. [2022-11-18 20:50:13,884 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 568 transitions, 7928 flow [2022-11-18 20:50:13,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:13,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:13,884 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:13,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-18 20:50:13,885 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:13,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:13,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1989330444, now seen corresponding path program 67 times [2022-11-18 20:50:13,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:13,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514174791] [2022-11-18 20:50:13,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:13,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:14,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:14,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514174791] [2022-11-18 20:50:14,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514174791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:14,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:14,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:50:14,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477854227] [2022-11-18 20:50:14,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:14,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:50:14,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:14,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:50:14,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:50:14,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:14,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 568 transitions, 7928 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:14,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:14,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:14,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:17,120 INFO L130 PetriNetUnfolder]: 438/1378 cut-off events. [2022-11-18 20:50:17,120 INFO L131 PetriNetUnfolder]: For 24112/24112 co-relation queries the response was YES. [2022-11-18 20:50:17,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 1378 events. 438/1378 cut-off events. For 24112/24112 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9157 event pairs, 44 based on Foata normal form. 1/1377 useless extension candidates. Maximal degree in co-relation 10262. Up to 866 conditions per place. [2022-11-18 20:50:17,142 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 403 selfloop transitions, 151 changer transitions 24/617 dead transitions. [2022-11-18 20:50:17,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 617 transitions, 9755 flow [2022-11-18 20:50:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 20:50:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-18 20:50:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2666 transitions. [2022-11-18 20:50:17,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5561118064246975 [2022-11-18 20:50:17,145 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2666 transitions. [2022-11-18 20:50:17,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2666 transitions. [2022-11-18 20:50:17,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:17,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2666 transitions. [2022-11-18 20:50:17,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 52.27450980392157) internal successors, (2666), 51 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:17,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 94.0) internal successors, (4888), 52 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:17,149 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 94.0) internal successors, (4888), 52 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:17,149 INFO L175 Difference]: Start difference. First operand has 516 places, 568 transitions, 7928 flow. Second operand 51 states and 2666 transitions. [2022-11-18 20:50:17,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 617 transitions, 9755 flow [2022-11-18 20:50:17,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 617 transitions, 9290 flow, removed 151 selfloop flow, removed 33 redundant places. [2022-11-18 20:50:17,453 INFO L231 Difference]: Finished difference. Result has 536 places, 574 transitions, 8010 flow [2022-11-18 20:50:17,453 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7491, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8010, PETRI_PLACES=536, PETRI_TRANSITIONS=574} [2022-11-18 20:50:17,454 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 448 predicate places. [2022-11-18 20:50:17,454 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 574 transitions, 8010 flow [2022-11-18 20:50:17,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:17,454 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:17,454 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:17,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-18 20:50:17,455 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:17,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1556785272, now seen corresponding path program 68 times [2022-11-18 20:50:17,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:17,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434518248] [2022-11-18 20:50:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:17,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:17,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:17,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434518248] [2022-11-18 20:50:17,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434518248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:17,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:17,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:50:17,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102878196] [2022-11-18 20:50:17,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:17,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:50:17,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:50:17,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:50:17,903 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:17,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 574 transitions, 8010 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:17,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:17,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:17,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:19,838 INFO L130 PetriNetUnfolder]: 447/1401 cut-off events. [2022-11-18 20:50:19,838 INFO L131 PetriNetUnfolder]: For 25002/25002 co-relation queries the response was YES. [2022-11-18 20:50:19,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 1401 events. 447/1401 cut-off events. For 25002/25002 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9346 event pairs, 57 based on Foata normal form. 1/1399 useless extension candidates. Maximal degree in co-relation 10621. Up to 947 conditions per place. [2022-11-18 20:50:19,858 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 448 selfloop transitions, 119 changer transitions 24/630 dead transitions. [2022-11-18 20:50:19,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 630 transitions, 10026 flow [2022-11-18 20:50:19,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:50:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:50:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2011 transitions. [2022-11-18 20:50:19,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562989921612542 [2022-11-18 20:50:19,860 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2011 transitions. [2022-11-18 20:50:19,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2011 transitions. [2022-11-18 20:50:19,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:19,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2011 transitions. [2022-11-18 20:50:19,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.921052631578945) internal successors, (2011), 38 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:19,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:19,865 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:19,865 INFO L175 Difference]: Start difference. First operand has 536 places, 574 transitions, 8010 flow. Second operand 38 states and 2011 transitions. [2022-11-18 20:50:19,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 630 transitions, 10026 flow [2022-11-18 20:50:20,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 630 transitions, 9592 flow, removed 100 selfloop flow, removed 42 redundant places. [2022-11-18 20:50:20,106 INFO L231 Difference]: Finished difference. Result has 535 places, 591 transitions, 8255 flow [2022-11-18 20:50:20,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7600, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8255, PETRI_PLACES=535, PETRI_TRANSITIONS=591} [2022-11-18 20:50:20,107 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 447 predicate places. [2022-11-18 20:50:20,107 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 591 transitions, 8255 flow [2022-11-18 20:50:20,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:20,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:20,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:20,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-18 20:50:20,107 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:20,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1042239066, now seen corresponding path program 69 times [2022-11-18 20:50:20,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:20,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083244035] [2022-11-18 20:50:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:20,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:20,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:20,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083244035] [2022-11-18 20:50:20,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083244035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:20,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:20,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:50:20,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683671501] [2022-11-18 20:50:20,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:20,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:50:20,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:20,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:50:20,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:50:20,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:20,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 591 transitions, 8255 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:20,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:20,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:20,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:22,585 INFO L130 PetriNetUnfolder]: 447/1426 cut-off events. [2022-11-18 20:50:22,585 INFO L131 PetriNetUnfolder]: For 25535/25535 co-relation queries the response was YES. [2022-11-18 20:50:22,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10940 conditions, 1426 events. 447/1426 cut-off events. For 25535/25535 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9649 event pairs, 54 based on Foata normal form. 1/1425 useless extension candidates. Maximal degree in co-relation 10755. Up to 950 conditions per place. [2022-11-18 20:50:22,608 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 452 selfloop transitions, 118 changer transitions 22/631 dead transitions. [2022-11-18 20:50:22,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 631 transitions, 10060 flow [2022-11-18 20:50:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:50:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:50:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1908 transitions. [2022-11-18 20:50:22,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-18 20:50:22,611 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1908 transitions. [2022-11-18 20:50:22,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1908 transitions. [2022-11-18 20:50:22,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:22,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1908 transitions. [2022-11-18 20:50:22,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.0) internal successors, (1908), 36 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:22,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:22,617 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:22,617 INFO L175 Difference]: Start difference. First operand has 535 places, 591 transitions, 8255 flow. Second operand 36 states and 1908 transitions. [2022-11-18 20:50:22,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 631 transitions, 10060 flow [2022-11-18 20:50:22,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 631 transitions, 9781 flow, removed 64 selfloop flow, removed 30 redundant places. [2022-11-18 20:50:22,919 INFO L231 Difference]: Finished difference. Result has 545 places, 597 transitions, 8476 flow [2022-11-18 20:50:22,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8006, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8476, PETRI_PLACES=545, PETRI_TRANSITIONS=597} [2022-11-18 20:50:22,920 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 457 predicate places. [2022-11-18 20:50:22,920 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 597 transitions, 8476 flow [2022-11-18 20:50:22,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:22,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:22,921 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:22,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-18 20:50:22,921 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:22,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:22,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1046651676, now seen corresponding path program 70 times [2022-11-18 20:50:22,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:22,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59000097] [2022-11-18 20:50:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:22,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:23,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:23,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59000097] [2022-11-18 20:50:23,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59000097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:23,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:23,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:50:23,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125934142] [2022-11-18 20:50:23,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:23,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:50:23,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:23,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:50:23,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:50:23,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:23,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 597 transitions, 8476 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:23,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:23,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:23,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:25,439 INFO L130 PetriNetUnfolder]: 447/1438 cut-off events. [2022-11-18 20:50:25,440 INFO L131 PetriNetUnfolder]: For 27719/27719 co-relation queries the response was YES. [2022-11-18 20:50:25,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11175 conditions, 1438 events. 447/1438 cut-off events. For 27719/27719 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9850 event pairs, 41 based on Foata normal form. 1/1437 useless extension candidates. Maximal degree in co-relation 10984. Up to 932 conditions per place. [2022-11-18 20:50:25,464 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 441 selfloop transitions, 132 changer transitions 32/644 dead transitions. [2022-11-18 20:50:25,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 644 transitions, 10329 flow [2022-11-18 20:50:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:50:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:50:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-11-18 20:50:25,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-11-18 20:50:25,466 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-11-18 20:50:25,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-11-18 20:50:25,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:25,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-11-18 20:50:25,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:25,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:25,469 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:25,469 INFO L175 Difference]: Start difference. First operand has 545 places, 597 transitions, 8476 flow. Second operand 36 states and 1912 transitions. [2022-11-18 20:50:25,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 644 transitions, 10329 flow [2022-11-18 20:50:25,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 644 transitions, 10006 flow, removed 87 selfloop flow, removed 29 redundant places. [2022-11-18 20:50:25,749 INFO L231 Difference]: Finished difference. Result has 555 places, 594 transitions, 8486 flow [2022-11-18 20:50:25,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8197, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8486, PETRI_PLACES=555, PETRI_TRANSITIONS=594} [2022-11-18 20:50:25,750 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 467 predicate places. [2022-11-18 20:50:25,750 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 594 transitions, 8486 flow [2022-11-18 20:50:25,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:25,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:25,750 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:25,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-18 20:50:25,751 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:25,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:25,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1300957692, now seen corresponding path program 71 times [2022-11-18 20:50:25,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:25,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744703714] [2022-11-18 20:50:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:25,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:26,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:26,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744703714] [2022-11-18 20:50:26,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744703714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:26,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:26,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:50:26,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383966537] [2022-11-18 20:50:26,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:26,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:50:26,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:26,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:50:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:50:26,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:26,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 594 transitions, 8486 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:26,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:26,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:26,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:28,439 INFO L130 PetriNetUnfolder]: 443/1413 cut-off events. [2022-11-18 20:50:28,439 INFO L131 PetriNetUnfolder]: For 27436/27436 co-relation queries the response was YES. [2022-11-18 20:50:28,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11203 conditions, 1413 events. 443/1413 cut-off events. For 27436/27436 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9610 event pairs, 47 based on Foata normal form. 1/1411 useless extension candidates. Maximal degree in co-relation 11007. Up to 975 conditions per place. [2022-11-18 20:50:28,461 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 466 selfloop transitions, 106 changer transitions 22/633 dead transitions. [2022-11-18 20:50:28,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 633 transitions, 10306 flow [2022-11-18 20:50:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:50:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:50:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1951 transitions. [2022-11-18 20:50:28,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5609545715928694 [2022-11-18 20:50:28,463 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1951 transitions. [2022-11-18 20:50:28,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1951 transitions. [2022-11-18 20:50:28,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:28,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1951 transitions. [2022-11-18 20:50:28,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.729729729729726) internal successors, (1951), 37 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:28,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:28,467 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:28,467 INFO L175 Difference]: Start difference. First operand has 555 places, 594 transitions, 8486 flow. Second operand 37 states and 1951 transitions. [2022-11-18 20:50:28,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 633 transitions, 10306 flow [2022-11-18 20:50:28,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 633 transitions, 9965 flow, removed 38 selfloop flow, removed 32 redundant places. [2022-11-18 20:50:28,754 INFO L231 Difference]: Finished difference. Result has 561 places, 599 transitions, 8609 flow [2022-11-18 20:50:28,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8183, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8609, PETRI_PLACES=561, PETRI_TRANSITIONS=599} [2022-11-18 20:50:28,755 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 473 predicate places. [2022-11-18 20:50:28,755 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 599 transitions, 8609 flow [2022-11-18 20:50:28,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:28,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:28,756 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:28,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-18 20:50:28,756 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:28,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:28,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1965681016, now seen corresponding path program 72 times [2022-11-18 20:50:28,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:28,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332667860] [2022-11-18 20:50:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:28,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:29,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:29,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332667860] [2022-11-18 20:50:29,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332667860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:29,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:29,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:50:29,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182622345] [2022-11-18 20:50:29,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:29,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:50:29,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:29,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:50:29,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:50:29,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:29,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 599 transitions, 8609 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:29,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:29,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:29,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:31,184 INFO L130 PetriNetUnfolder]: 436/1421 cut-off events. [2022-11-18 20:50:31,184 INFO L131 PetriNetUnfolder]: For 27553/27553 co-relation queries the response was YES. [2022-11-18 20:50:31,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11085 conditions, 1421 events. 436/1421 cut-off events. For 27553/27553 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9747 event pairs, 55 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 10887. Up to 961 conditions per place. [2022-11-18 20:50:31,208 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 458 selfloop transitions, 106 changer transitions 22/625 dead transitions. [2022-11-18 20:50:31,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 625 transitions, 10008 flow [2022-11-18 20:50:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:50:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:50:31,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1799 transitions. [2022-11-18 20:50:31,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5628911138923655 [2022-11-18 20:50:31,210 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1799 transitions. [2022-11-18 20:50:31,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1799 transitions. [2022-11-18 20:50:31,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:31,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1799 transitions. [2022-11-18 20:50:31,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.911764705882355) internal successors, (1799), 34 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:31,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:31,214 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:31,214 INFO L175 Difference]: Start difference. First operand has 561 places, 599 transitions, 8609 flow. Second operand 34 states and 1799 transitions. [2022-11-18 20:50:31,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 625 transitions, 10008 flow [2022-11-18 20:50:31,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 625 transitions, 9710 flow, removed 74 selfloop flow, removed 31 redundant places. [2022-11-18 20:50:31,516 INFO L231 Difference]: Finished difference. Result has 564 places, 593 transitions, 8494 flow [2022-11-18 20:50:31,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8327, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8494, PETRI_PLACES=564, PETRI_TRANSITIONS=593} [2022-11-18 20:50:31,518 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 476 predicate places. [2022-11-18 20:50:31,518 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 593 transitions, 8494 flow [2022-11-18 20:50:31,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:31,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:31,519 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:31,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-18 20:50:31,519 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:31,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:31,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1548872244, now seen corresponding path program 73 times [2022-11-18 20:50:31,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:31,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890768259] [2022-11-18 20:50:31,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:31,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:32,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:32,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890768259] [2022-11-18 20:50:32,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890768259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:32,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:32,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:50:32,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347175659] [2022-11-18 20:50:32,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:32,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:50:32,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:32,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:50:32,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:50:32,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:32,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 593 transitions, 8494 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:32,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:32,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:32,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:34,732 INFO L130 PetriNetUnfolder]: 448/1444 cut-off events. [2022-11-18 20:50:34,733 INFO L131 PetriNetUnfolder]: For 27750/27750 co-relation queries the response was YES. [2022-11-18 20:50:34,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11373 conditions, 1444 events. 448/1444 cut-off events. For 27750/27750 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9893 event pairs, 54 based on Foata normal form. 1/1442 useless extension candidates. Maximal degree in co-relation 11174. Up to 923 conditions per place. [2022-11-18 20:50:34,759 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 416 selfloop transitions, 169 changer transitions 24/648 dead transitions. [2022-11-18 20:50:34,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 648 transitions, 10550 flow [2022-11-18 20:50:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 20:50:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 20:50:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2366 transitions. [2022-11-18 20:50:34,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5593380614657211 [2022-11-18 20:50:34,761 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2366 transitions. [2022-11-18 20:50:34,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2366 transitions. [2022-11-18 20:50:34,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:34,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2366 transitions. [2022-11-18 20:50:34,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 52.577777777777776) internal successors, (2366), 45 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:34,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:34,766 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:34,766 INFO L175 Difference]: Start difference. First operand has 564 places, 593 transitions, 8494 flow. Second operand 45 states and 2366 transitions. [2022-11-18 20:50:34,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 648 transitions, 10550 flow [2022-11-18 20:50:35,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 648 transitions, 10183 flow, removed 26 selfloop flow, removed 37 redundant places. [2022-11-18 20:50:35,044 INFO L231 Difference]: Finished difference. Result has 573 places, 610 transitions, 8943 flow [2022-11-18 20:50:35,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8943, PETRI_PLACES=573, PETRI_TRANSITIONS=610} [2022-11-18 20:50:35,045 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 485 predicate places. [2022-11-18 20:50:35,045 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 610 transitions, 8943 flow [2022-11-18 20:50:35,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:35,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:35,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:35,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-18 20:50:35,046 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:35,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:35,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2030521222, now seen corresponding path program 74 times [2022-11-18 20:50:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:35,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61629433] [2022-11-18 20:50:35,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:35,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:35,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:35,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61629433] [2022-11-18 20:50:35,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61629433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:35,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:35,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:50:35,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964365336] [2022-11-18 20:50:35,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:35,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:50:35,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:35,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:50:35,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:50:35,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:35,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 610 transitions, 8943 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:35,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:35,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:35,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:38,077 INFO L130 PetriNetUnfolder]: 448/1473 cut-off events. [2022-11-18 20:50:38,077 INFO L131 PetriNetUnfolder]: For 29479/29479 co-relation queries the response was YES. [2022-11-18 20:50:38,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11603 conditions, 1473 events. 448/1473 cut-off events. For 29479/29479 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10315 event pairs, 44 based on Foata normal form. 1/1472 useless extension candidates. Maximal degree in co-relation 11402. Up to 891 conditions per place. [2022-11-18 20:50:38,105 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 407 selfloop transitions, 183 changer transitions 32/661 dead transitions. [2022-11-18 20:50:38,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 661 transitions, 10919 flow [2022-11-18 20:50:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 20:50:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-18 20:50:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2620 transitions. [2022-11-18 20:50:38,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-18 20:50:38,108 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2620 transitions. [2022-11-18 20:50:38,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2620 transitions. [2022-11-18 20:50:38,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:38,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2620 transitions. [2022-11-18 20:50:38,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 52.4) internal successors, (2620), 50 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:38,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:38,113 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:38,113 INFO L175 Difference]: Start difference. First operand has 573 places, 610 transitions, 8943 flow. Second operand 50 states and 2620 transitions. [2022-11-18 20:50:38,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 661 transitions, 10919 flow [2022-11-18 20:50:38,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 661 transitions, 10506 flow, removed 87 selfloop flow, removed 38 redundant places. [2022-11-18 20:50:38,524 INFO L231 Difference]: Finished difference. Result has 590 places, 613 transitions, 9119 flow [2022-11-18 20:50:38,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8587, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=9119, PETRI_PLACES=590, PETRI_TRANSITIONS=613} [2022-11-18 20:50:38,525 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 502 predicate places. [2022-11-18 20:50:38,525 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 613 transitions, 9119 flow [2022-11-18 20:50:38,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:38,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:38,526 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:38,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-18 20:50:38,526 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash 648024164, now seen corresponding path program 75 times [2022-11-18 20:50:38,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:38,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351362215] [2022-11-18 20:50:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:39,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:39,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351362215] [2022-11-18 20:50:39,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351362215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:39,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:39,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:50:39,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623912720] [2022-11-18 20:50:39,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:39,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:50:39,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:39,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:50:39,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:50:39,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:39,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 613 transitions, 9119 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:39,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:39,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:39,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:41,265 INFO L130 PetriNetUnfolder]: 444/1452 cut-off events. [2022-11-18 20:50:41,265 INFO L131 PetriNetUnfolder]: For 29256/29256 co-relation queries the response was YES. [2022-11-18 20:50:41,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11665 conditions, 1452 events. 444/1452 cut-off events. For 29256/29256 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10107 event pairs, 41 based on Foata normal form. 1/1451 useless extension candidates. Maximal degree in co-relation 11458. Up to 957 conditions per place. [2022-11-18 20:50:41,289 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 456 selfloop transitions, 130 changer transitions 32/657 dead transitions. [2022-11-18 20:50:41,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 657 transitions, 10996 flow [2022-11-18 20:50:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 20:50:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-18 20:50:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2264 transitions. [2022-11-18 20:50:41,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601187530925285 [2022-11-18 20:50:41,291 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2264 transitions. [2022-11-18 20:50:41,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2264 transitions. [2022-11-18 20:50:41,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:41,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2264 transitions. [2022-11-18 20:50:41,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.651162790697676) internal successors, (2264), 43 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:41,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:41,295 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:41,295 INFO L175 Difference]: Start difference. First operand has 590 places, 613 transitions, 9119 flow. Second operand 43 states and 2264 transitions. [2022-11-18 20:50:41,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 657 transitions, 10996 flow [2022-11-18 20:50:41,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 657 transitions, 10500 flow, removed 57 selfloop flow, removed 46 redundant places. [2022-11-18 20:50:41,609 INFO L231 Difference]: Finished difference. Result has 588 places, 610 transitions, 8958 flow [2022-11-18 20:50:41,610 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8673, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=8958, PETRI_PLACES=588, PETRI_TRANSITIONS=610} [2022-11-18 20:50:41,610 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-11-18 20:50:41,610 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 610 transitions, 8958 flow [2022-11-18 20:50:41,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:41,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:41,611 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:41,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-18 20:50:41,611 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash -539184084, now seen corresponding path program 76 times [2022-11-18 20:50:41,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:41,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761153909] [2022-11-18 20:50:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:41,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:42,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:42,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761153909] [2022-11-18 20:50:42,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761153909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:42,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:42,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:50:42,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773725763] [2022-11-18 20:50:42,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:42,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:50:42,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:42,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:50:42,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:50:42,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:42,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 610 transitions, 8958 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:42,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:42,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:42,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:44,090 INFO L130 PetriNetUnfolder]: 442/1455 cut-off events. [2022-11-18 20:50:44,090 INFO L131 PetriNetUnfolder]: For 29115/29115 co-relation queries the response was YES. [2022-11-18 20:50:44,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11570 conditions, 1455 events. 442/1455 cut-off events. For 29115/29115 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10044 event pairs, 44 based on Foata normal form. 1/1453 useless extension candidates. Maximal degree in co-relation 11363. Up to 1012 conditions per place. [2022-11-18 20:50:44,116 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 499 selfloop transitions, 90 changer transitions 22/650 dead transitions. [2022-11-18 20:50:44,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 650 transitions, 10827 flow [2022-11-18 20:50:44,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:50:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:50:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1901 transitions. [2022-11-18 20:50:44,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5617612293144209 [2022-11-18 20:50:44,118 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1901 transitions. [2022-11-18 20:50:44,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1901 transitions. [2022-11-18 20:50:44,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:44,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1901 transitions. [2022-11-18 20:50:44,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.80555555555556) internal successors, (1901), 36 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:44,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:44,122 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:44,122 INFO L175 Difference]: Start difference. First operand has 588 places, 610 transitions, 8958 flow. Second operand 36 states and 1901 transitions. [2022-11-18 20:50:44,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 650 transitions, 10827 flow [2022-11-18 20:50:44,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 650 transitions, 10451 flow, removed 74 selfloop flow, removed 37 redundant places. [2022-11-18 20:50:44,458 INFO L231 Difference]: Finished difference. Result has 588 places, 616 transitions, 9016 flow [2022-11-18 20:50:44,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8632, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9016, PETRI_PLACES=588, PETRI_TRANSITIONS=616} [2022-11-18 20:50:44,459 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-11-18 20:50:44,459 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 616 transitions, 9016 flow [2022-11-18 20:50:44,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:44,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:44,459 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:44,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-18 20:50:44,460 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:44,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1628501694, now seen corresponding path program 77 times [2022-11-18 20:50:44,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:44,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643538633] [2022-11-18 20:50:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:44,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:44,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:44,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643538633] [2022-11-18 20:50:44,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643538633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:44,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:44,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:50:44,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174906215] [2022-11-18 20:50:44,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:44,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:50:44,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:44,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:50:44,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:50:44,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:44,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 616 transitions, 9016 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:44,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:44,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:44,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:46,955 INFO L130 PetriNetUnfolder]: 442/1449 cut-off events. [2022-11-18 20:50:46,955 INFO L131 PetriNetUnfolder]: For 30247/30247 co-relation queries the response was YES. [2022-11-18 20:50:46,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11685 conditions, 1449 events. 442/1449 cut-off events. For 30247/30247 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10051 event pairs, 49 based on Foata normal form. 1/1448 useless extension candidates. Maximal degree in co-relation 11475. Up to 969 conditions per place. [2022-11-18 20:50:46,981 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 471 selfloop transitions, 129 changer transitions 16/655 dead transitions. [2022-11-18 20:50:46,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 655 transitions, 11012 flow [2022-11-18 20:50:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:50:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:50:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-18 20:50:46,984 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-18 20:50:46,984 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-18 20:50:46,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-18 20:50:46,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:46,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-18 20:50:46,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:46,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:46,987 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:46,987 INFO L175 Difference]: Start difference. First operand has 588 places, 616 transitions, 9016 flow. Second operand 35 states and 1858 transitions. [2022-11-18 20:50:46,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 655 transitions, 11012 flow [2022-11-18 20:50:47,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 655 transitions, 10689 flow, removed 74 selfloop flow, removed 30 redundant places. [2022-11-18 20:50:47,321 INFO L231 Difference]: Finished difference. Result has 594 places, 627 transitions, 9382 flow [2022-11-18 20:50:47,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8719, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9382, PETRI_PLACES=594, PETRI_TRANSITIONS=627} [2022-11-18 20:50:47,321 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 506 predicate places. [2022-11-18 20:50:47,321 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 627 transitions, 9382 flow [2022-11-18 20:50:47,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:47,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:47,322 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:47,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-18 20:50:47,322 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:47,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:47,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1039571604, now seen corresponding path program 78 times [2022-11-18 20:50:47,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:47,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665506068] [2022-11-18 20:50:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:47,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:47,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:47,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665506068] [2022-11-18 20:50:47,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665506068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:47,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:47,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:50:47,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625969098] [2022-11-18 20:50:47,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:47,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:50:47,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:47,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:50:47,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:50:47,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:47,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 627 transitions, 9382 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:47,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:47,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:47,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:50,032 INFO L130 PetriNetUnfolder]: 441/1459 cut-off events. [2022-11-18 20:50:50,032 INFO L131 PetriNetUnfolder]: For 32797/32797 co-relation queries the response was YES. [2022-11-18 20:50:50,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11775 conditions, 1459 events. 441/1459 cut-off events. For 32797/32797 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10191 event pairs, 50 based on Foata normal form. 1/1457 useless extension candidates. Maximal degree in co-relation 11563. Up to 1017 conditions per place. [2022-11-18 20:50:50,059 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 498 selfloop transitions, 97 changer transitions 19/653 dead transitions. [2022-11-18 20:50:50,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 653 transitions, 10853 flow [2022-11-18 20:50:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:50:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:50:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1842 transitions. [2022-11-18 20:50:50,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5598784194528875 [2022-11-18 20:50:50,061 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1842 transitions. [2022-11-18 20:50:50,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1842 transitions. [2022-11-18 20:50:50,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:50,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1842 transitions. [2022-11-18 20:50:50,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.628571428571426) internal successors, (1842), 35 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:50,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:50,064 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:50,064 INFO L175 Difference]: Start difference. First operand has 594 places, 627 transitions, 9382 flow. Second operand 35 states and 1842 transitions. [2022-11-18 20:50:50,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 653 transitions, 10853 flow [2022-11-18 20:50:50,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 653 transitions, 10396 flow, removed 149 selfloop flow, removed 25 redundant places. [2022-11-18 20:50:50,399 INFO L231 Difference]: Finished difference. Result has 604 places, 624 transitions, 9125 flow [2022-11-18 20:50:50,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8933, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9125, PETRI_PLACES=604, PETRI_TRANSITIONS=624} [2022-11-18 20:50:50,400 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 516 predicate places. [2022-11-18 20:50:50,400 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 624 transitions, 9125 flow [2022-11-18 20:50:50,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:50,400 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:50,400 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:50,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-18 20:50:50,401 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:50,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:50,401 INFO L85 PathProgramCache]: Analyzing trace with hash -879968222, now seen corresponding path program 79 times [2022-11-18 20:50:50,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:50,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487866659] [2022-11-18 20:50:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:50,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:50,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:50,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487866659] [2022-11-18 20:50:50,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487866659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:50,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:50,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:50:50,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128601975] [2022-11-18 20:50:50,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:50,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:50:50,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:50,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:50:50,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:50:50,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:50,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 624 transitions, 9125 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:50,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:50,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:50,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:53,208 INFO L130 PetriNetUnfolder]: 438/1444 cut-off events. [2022-11-18 20:50:53,208 INFO L131 PetriNetUnfolder]: For 31873/31873 co-relation queries the response was YES. [2022-11-18 20:50:53,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11626 conditions, 1444 events. 438/1444 cut-off events. For 31873/31873 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10025 event pairs, 40 based on Foata normal form. 1/1441 useless extension candidates. Maximal degree in co-relation 11411. Up to 1001 conditions per place. [2022-11-18 20:50:53,237 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 492 selfloop transitions, 100 changer transitions 22/653 dead transitions. [2022-11-18 20:50:53,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 653 transitions, 10715 flow [2022-11-18 20:50:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:50:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:50:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1990 transitions. [2022-11-18 20:50:53,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5571108622620381 [2022-11-18 20:50:53,240 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1990 transitions. [2022-11-18 20:50:53,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1990 transitions. [2022-11-18 20:50:53,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:53,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1990 transitions. [2022-11-18 20:50:53,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.36842105263158) internal successors, (1990), 38 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:53,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:53,244 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:53,244 INFO L175 Difference]: Start difference. First operand has 604 places, 624 transitions, 9125 flow. Second operand 38 states and 1990 transitions. [2022-11-18 20:50:53,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 653 transitions, 10715 flow [2022-11-18 20:50:53,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 653 transitions, 10452 flow, removed 13 selfloop flow, removed 35 redundant places. [2022-11-18 20:50:53,653 INFO L231 Difference]: Finished difference. Result has 606 places, 621 transitions, 9118 flow [2022-11-18 20:50:53,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8880, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9118, PETRI_PLACES=606, PETRI_TRANSITIONS=621} [2022-11-18 20:50:53,654 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 518 predicate places. [2022-11-18 20:50:53,654 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 621 transitions, 9118 flow [2022-11-18 20:50:53,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:53,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:53,654 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:53,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-18 20:50:53,654 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:53,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:53,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2128455458, now seen corresponding path program 80 times [2022-11-18 20:50:53,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:53,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762666950] [2022-11-18 20:50:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:53,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:54,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:54,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762666950] [2022-11-18 20:50:54,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762666950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:54,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:54,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:50:54,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168402833] [2022-11-18 20:50:54,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:54,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:50:54,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:50:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:50:54,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:54,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 621 transitions, 9118 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:54,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:54,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:54,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:55,948 INFO L130 PetriNetUnfolder]: 436/1422 cut-off events. [2022-11-18 20:50:55,948 INFO L131 PetriNetUnfolder]: For 33285/33285 co-relation queries the response was YES. [2022-11-18 20:50:55,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11686 conditions, 1422 events. 436/1422 cut-off events. For 33285/33285 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9750 event pairs, 37 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 11470. Up to 958 conditions per place. [2022-11-18 20:50:55,975 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 468 selfloop transitions, 126 changer transitions 21/654 dead transitions. [2022-11-18 20:50:55,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 654 transitions, 10921 flow [2022-11-18 20:50:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:50:55,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:50:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1705 transitions. [2022-11-18 20:50:55,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5668218085106383 [2022-11-18 20:50:55,977 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1705 transitions. [2022-11-18 20:50:55,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1705 transitions. [2022-11-18 20:50:55,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:55,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1705 transitions. [2022-11-18 20:50:55,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.28125) internal successors, (1705), 32 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:55,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:55,980 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:55,980 INFO L175 Difference]: Start difference. First operand has 606 places, 621 transitions, 9118 flow. Second operand 32 states and 1705 transitions. [2022-11-18 20:50:55,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 654 transitions, 10921 flow [2022-11-18 20:50:56,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 654 transitions, 10594 flow, removed 56 selfloop flow, removed 37 redundant places. [2022-11-18 20:50:56,344 INFO L231 Difference]: Finished difference. Result has 600 places, 623 transitions, 9277 flow [2022-11-18 20:50:56,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8833, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9277, PETRI_PLACES=600, PETRI_TRANSITIONS=623} [2022-11-18 20:50:56,345 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 512 predicate places. [2022-11-18 20:50:56,345 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 623 transitions, 9277 flow [2022-11-18 20:50:56,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:56,346 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:56,346 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:56,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-18 20:50:56,346 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:56,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:56,346 INFO L85 PathProgramCache]: Analyzing trace with hash -962888412, now seen corresponding path program 81 times [2022-11-18 20:50:56,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:56,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737354797] [2022-11-18 20:50:56,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:56,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:56,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:56,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737354797] [2022-11-18 20:50:56,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737354797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:56,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:56,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:50:56,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013533805] [2022-11-18 20:50:56,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:56,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:50:56,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:56,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:50:56,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:50:56,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:56,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 623 transitions, 9277 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:56,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:56,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:56,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:58,721 INFO L130 PetriNetUnfolder]: 433/1410 cut-off events. [2022-11-18 20:50:58,721 INFO L131 PetriNetUnfolder]: For 31965/31965 co-relation queries the response was YES. [2022-11-18 20:50:58,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11563 conditions, 1410 events. 433/1410 cut-off events. For 31965/31965 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9671 event pairs, 40 based on Foata normal form. 1/1408 useless extension candidates. Maximal degree in co-relation 11348. Up to 1012 conditions per place. [2022-11-18 20:50:58,745 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 507 selfloop transitions, 84 changer transitions 19/649 dead transitions. [2022-11-18 20:50:58,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 649 transitions, 10744 flow [2022-11-18 20:50:58,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:50:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:50:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1792 transitions. [2022-11-18 20:50:58,747 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5607008760951189 [2022-11-18 20:50:58,747 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1792 transitions. [2022-11-18 20:50:58,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1792 transitions. [2022-11-18 20:50:58,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:58,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1792 transitions. [2022-11-18 20:50:58,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.705882352941174) internal successors, (1792), 34 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:58,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:58,750 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:58,750 INFO L175 Difference]: Start difference. First operand has 600 places, 623 transitions, 9277 flow. Second operand 34 states and 1792 transitions. [2022-11-18 20:50:58,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 649 transitions, 10744 flow [2022-11-18 20:50:59,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 649 transitions, 10336 flow, removed 95 selfloop flow, removed 29 redundant places. [2022-11-18 20:50:59,104 INFO L231 Difference]: Finished difference. Result has 604 places, 620 transitions, 9032 flow [2022-11-18 20:50:59,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8891, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9032, PETRI_PLACES=604, PETRI_TRANSITIONS=620} [2022-11-18 20:50:59,104 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 516 predicate places. [2022-11-18 20:50:59,104 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 620 transitions, 9032 flow [2022-11-18 20:50:59,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:59,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:59,105 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:59,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-18 20:50:59,105 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:50:59,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:59,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1810588844, now seen corresponding path program 82 times [2022-11-18 20:50:59,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:59,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682664404] [2022-11-18 20:50:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:59,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:59,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:59,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682664404] [2022-11-18 20:50:59,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682664404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:59,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:59,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:50:59,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603248023] [2022-11-18 20:50:59,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:59,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:50:59,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:59,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:50:59,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:50:59,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:50:59,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 620 transitions, 9032 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:59,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:59,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:50:59,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:01,877 INFO L130 PetriNetUnfolder]: 428/1386 cut-off events. [2022-11-18 20:51:01,877 INFO L131 PetriNetUnfolder]: For 28223/28223 co-relation queries the response was YES. [2022-11-18 20:51:01,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11138 conditions, 1386 events. 428/1386 cut-off events. For 28223/28223 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9409 event pairs, 50 based on Foata normal form. 1/1384 useless extension candidates. Maximal degree in co-relation 10923. Up to 986 conditions per place. [2022-11-18 20:51:01,901 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 490 selfloop transitions, 72 changer transitions 38/639 dead transitions. [2022-11-18 20:51:01,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 639 transitions, 10310 flow [2022-11-18 20:51:01,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:51:01,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:51:01,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1834 transitions. [2022-11-18 20:51:01,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-18 20:51:01,903 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1834 transitions. [2022-11-18 20:51:01,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1834 transitions. [2022-11-18 20:51:01,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:01,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1834 transitions. [2022-11-18 20:51:01,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.4) internal successors, (1834), 35 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:01,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:01,907 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:01,907 INFO L175 Difference]: Start difference. First operand has 604 places, 620 transitions, 9032 flow. Second operand 35 states and 1834 transitions. [2022-11-18 20:51:01,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 639 transitions, 10310 flow [2022-11-18 20:51:02,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 639 transitions, 10066 flow, removed 13 selfloop flow, removed 35 redundant places. [2022-11-18 20:51:02,239 INFO L231 Difference]: Finished difference. Result has 599 places, 592 transitions, 8529 flow [2022-11-18 20:51:02,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8794, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8529, PETRI_PLACES=599, PETRI_TRANSITIONS=592} [2022-11-18 20:51:02,240 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 511 predicate places. [2022-11-18 20:51:02,240 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 592 transitions, 8529 flow [2022-11-18 20:51:02,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:02,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:02,241 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:02,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-18 20:51:02,241 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1384972958, now seen corresponding path program 83 times [2022-11-18 20:51:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:02,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723585670] [2022-11-18 20:51:02,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:02,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:02,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:02,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723585670] [2022-11-18 20:51:02,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723585670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:02,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:02,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:51:02,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489875212] [2022-11-18 20:51:02,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:02,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:51:02,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:02,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:51:02,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:51:02,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:02,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 592 transitions, 8529 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:02,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:02,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:02,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:04,587 INFO L130 PetriNetUnfolder]: 424/1365 cut-off events. [2022-11-18 20:51:04,587 INFO L131 PetriNetUnfolder]: For 27183/27183 co-relation queries the response was YES. [2022-11-18 20:51:04,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 1365 events. 424/1365 cut-off events. For 27183/27183 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9183 event pairs, 43 based on Foata normal form. 1/1363 useless extension candidates. Maximal degree in co-relation 10592. Up to 945 conditions per place. [2022-11-18 20:51:04,611 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 458 selfloop transitions, 105 changer transitions 19/621 dead transitions. [2022-11-18 20:51:04,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 621 transitions, 9960 flow [2022-11-18 20:51:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:51:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:51:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1850 transitions. [2022-11-18 20:51:04,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623100303951368 [2022-11-18 20:51:04,613 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1850 transitions. [2022-11-18 20:51:04,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1850 transitions. [2022-11-18 20:51:04,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:04,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1850 transitions. [2022-11-18 20:51:04,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.857142857142854) internal successors, (1850), 35 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:04,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:04,616 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:04,617 INFO L175 Difference]: Start difference. First operand has 599 places, 592 transitions, 8529 flow. Second operand 35 states and 1850 transitions. [2022-11-18 20:51:04,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 621 transitions, 9960 flow [2022-11-18 20:51:04,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 621 transitions, 9575 flow, removed 39 selfloop flow, removed 45 redundant places. [2022-11-18 20:51:04,915 INFO L231 Difference]: Finished difference. Result has 564 places, 589 transitions, 8357 flow [2022-11-18 20:51:04,916 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8158, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8357, PETRI_PLACES=564, PETRI_TRANSITIONS=589} [2022-11-18 20:51:04,916 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 476 predicate places. [2022-11-18 20:51:04,916 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 589 transitions, 8357 flow [2022-11-18 20:51:04,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:04,916 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:04,916 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:04,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-11-18 20:51:04,917 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:04,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:04,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1947784342, now seen corresponding path program 84 times [2022-11-18 20:51:04,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:04,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679796310] [2022-11-18 20:51:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:04,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:05,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:05,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:05,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679796310] [2022-11-18 20:51:05,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679796310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:05,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:05,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:51:05,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211315334] [2022-11-18 20:51:05,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:05,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:51:05,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:05,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:51:05,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:51:05,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:05,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 589 transitions, 8357 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:05,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:05,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:05,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:07,471 INFO L130 PetriNetUnfolder]: 430/1371 cut-off events. [2022-11-18 20:51:07,472 INFO L131 PetriNetUnfolder]: For 27027/27027 co-relation queries the response was YES. [2022-11-18 20:51:07,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10885 conditions, 1371 events. 430/1371 cut-off events. For 27027/27027 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9167 event pairs, 52 based on Foata normal form. 1/1369 useless extension candidates. Maximal degree in co-relation 10685. Up to 934 conditions per place. [2022-11-18 20:51:07,492 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 452 selfloop transitions, 118 changer transitions 22/631 dead transitions. [2022-11-18 20:51:07,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 631 transitions, 10197 flow [2022-11-18 20:51:07,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:51:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:51:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2008 transitions. [2022-11-18 20:51:07,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5621500559910414 [2022-11-18 20:51:07,495 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2008 transitions. [2022-11-18 20:51:07,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2008 transitions. [2022-11-18 20:51:07,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:07,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2008 transitions. [2022-11-18 20:51:07,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.8421052631579) internal successors, (2008), 38 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:07,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:07,498 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:07,498 INFO L175 Difference]: Start difference. First operand has 564 places, 589 transitions, 8357 flow. Second operand 38 states and 2008 transitions. [2022-11-18 20:51:07,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 631 transitions, 10197 flow [2022-11-18 20:51:07,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 631 transitions, 9903 flow, removed 24 selfloop flow, removed 35 redundant places. [2022-11-18 20:51:07,793 INFO L231 Difference]: Finished difference. Result has 569 places, 594 transitions, 8551 flow [2022-11-18 20:51:07,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8087, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8551, PETRI_PLACES=569, PETRI_TRANSITIONS=594} [2022-11-18 20:51:07,794 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 481 predicate places. [2022-11-18 20:51:07,794 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 594 transitions, 8551 flow [2022-11-18 20:51:07,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:07,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:07,794 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:07,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-11-18 20:51:07,794 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:07,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:07,795 INFO L85 PathProgramCache]: Analyzing trace with hash -657749404, now seen corresponding path program 85 times [2022-11-18 20:51:07,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:07,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118529380] [2022-11-18 20:51:07,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:07,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:08,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:08,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118529380] [2022-11-18 20:51:08,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118529380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:08,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:08,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:51:08,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573716070] [2022-11-18 20:51:08,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:08,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:51:08,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:08,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:51:08,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:51:08,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:08,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 594 transitions, 8551 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:08,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:08,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:08,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:10,353 INFO L130 PetriNetUnfolder]: 423/1376 cut-off events. [2022-11-18 20:51:10,353 INFO L131 PetriNetUnfolder]: For 27670/27670 co-relation queries the response was YES. [2022-11-18 20:51:10,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10859 conditions, 1376 events. 423/1376 cut-off events. For 27670/27670 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9309 event pairs, 51 based on Foata normal form. 1/1374 useless extension candidates. Maximal degree in co-relation 10656. Up to 946 conditions per place. [2022-11-18 20:51:10,375 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 456 selfloop transitions, 109 changer transitions 19/623 dead transitions. [2022-11-18 20:51:10,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 623 transitions, 9990 flow [2022-11-18 20:51:10,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:51:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:51:10,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1899 transitions. [2022-11-18 20:51:10,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-11-18 20:51:10,378 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1899 transitions. [2022-11-18 20:51:10,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1899 transitions. [2022-11-18 20:51:10,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:10,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1899 transitions. [2022-11-18 20:51:10,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.75) internal successors, (1899), 36 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:10,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:10,383 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:10,384 INFO L175 Difference]: Start difference. First operand has 569 places, 594 transitions, 8551 flow. Second operand 36 states and 1899 transitions. [2022-11-18 20:51:10,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 623 transitions, 9990 flow [2022-11-18 20:51:10,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 623 transitions, 9750 flow, removed 49 selfloop flow, removed 31 redundant places. [2022-11-18 20:51:10,674 INFO L231 Difference]: Finished difference. Result has 574 places, 591 transitions, 8529 flow [2022-11-18 20:51:10,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8319, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8529, PETRI_PLACES=574, PETRI_TRANSITIONS=591} [2022-11-18 20:51:10,675 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 486 predicate places. [2022-11-18 20:51:10,675 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 591 transitions, 8529 flow [2022-11-18 20:51:10,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:10,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:10,676 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:10,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-11-18 20:51:10,676 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:10,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1869742924, now seen corresponding path program 86 times [2022-11-18 20:51:10,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:10,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849021606] [2022-11-18 20:51:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:10,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:11,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:11,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849021606] [2022-11-18 20:51:11,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849021606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:11,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:11,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:51:11,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222783388] [2022-11-18 20:51:11,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:11,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:51:11,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:11,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:51:11,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:51:11,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:11,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 591 transitions, 8529 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:11,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:11,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:11,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:13,069 INFO L130 PetriNetUnfolder]: 422/1381 cut-off events. [2022-11-18 20:51:13,070 INFO L131 PetriNetUnfolder]: For 28764/28764 co-relation queries the response was YES. [2022-11-18 20:51:13,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10967 conditions, 1381 events. 422/1381 cut-off events. For 28764/28764 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9357 event pairs, 42 based on Foata normal form. 1/1379 useless extension candidates. Maximal degree in co-relation 10762. Up to 892 conditions per place. [2022-11-18 20:51:13,095 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 431 selfloop transitions, 146 changer transitions 23/639 dead transitions. [2022-11-18 20:51:13,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 639 transitions, 10493 flow [2022-11-18 20:51:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:51:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:51:13,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1804 transitions. [2022-11-18 20:51:13,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644555694618273 [2022-11-18 20:51:13,098 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1804 transitions. [2022-11-18 20:51:13,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1804 transitions. [2022-11-18 20:51:13,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:13,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1804 transitions. [2022-11-18 20:51:13,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.05882352941177) internal successors, (1804), 34 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:13,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:13,102 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:13,103 INFO L175 Difference]: Start difference. First operand has 574 places, 591 transitions, 8529 flow. Second operand 34 states and 1804 transitions. [2022-11-18 20:51:13,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 639 transitions, 10493 flow [2022-11-18 20:51:13,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 639 transitions, 10144 flow, removed 17 selfloop flow, removed 38 redundant places. [2022-11-18 20:51:13,427 INFO L231 Difference]: Finished difference. Result has 568 places, 598 transitions, 8751 flow [2022-11-18 20:51:13,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8203, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8751, PETRI_PLACES=568, PETRI_TRANSITIONS=598} [2022-11-18 20:51:13,428 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 480 predicate places. [2022-11-18 20:51:13,428 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 598 transitions, 8751 flow [2022-11-18 20:51:13,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:13,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:13,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:13,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-11-18 20:51:13,428 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:13,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1734526900, now seen corresponding path program 87 times [2022-11-18 20:51:13,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:13,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649535651] [2022-11-18 20:51:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:13,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:13,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:13,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649535651] [2022-11-18 20:51:13,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649535651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:13,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:13,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:51:13,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489380489] [2022-11-18 20:51:13,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:13,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:51:13,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:13,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:51:13,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:51:13,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:13,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 598 transitions, 8751 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:13,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:13,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:13,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:15,700 INFO L130 PetriNetUnfolder]: 423/1353 cut-off events. [2022-11-18 20:51:15,700 INFO L131 PetriNetUnfolder]: For 29665/29665 co-relation queries the response was YES. [2022-11-18 20:51:15,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10983 conditions, 1353 events. 423/1353 cut-off events. For 29665/29665 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9025 event pairs, 51 based on Foata normal form. 1/1351 useless extension candidates. Maximal degree in co-relation 10780. Up to 882 conditions per place. [2022-11-18 20:51:15,724 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 428 selfloop transitions, 149 changer transitions 21/637 dead transitions. [2022-11-18 20:51:15,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 637 transitions, 10553 flow [2022-11-18 20:51:15,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:51:15,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:51:15,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-18 20:51:15,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-18 20:51:15,726 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-18 20:51:15,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-18 20:51:15,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:15,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-18 20:51:15,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:15,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:15,729 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:15,729 INFO L175 Difference]: Start difference. First operand has 568 places, 598 transitions, 8751 flow. Second operand 35 states and 1858 transitions. [2022-11-18 20:51:15,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 637 transitions, 10553 flow [2022-11-18 20:51:16,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 637 transitions, 10166 flow, removed 104 selfloop flow, removed 28 redundant places. [2022-11-18 20:51:16,074 INFO L231 Difference]: Finished difference. Result has 576 places, 599 transitions, 8843 flow [2022-11-18 20:51:16,075 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8428, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8843, PETRI_PLACES=576, PETRI_TRANSITIONS=599} [2022-11-18 20:51:16,075 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 488 predicate places. [2022-11-18 20:51:16,075 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 599 transitions, 8843 flow [2022-11-18 20:51:16,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:16,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:16,076 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:16,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-11-18 20:51:16,076 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:16,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:16,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1299867540, now seen corresponding path program 88 times [2022-11-18 20:51:16,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:16,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677097830] [2022-11-18 20:51:16,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:16,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:16,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:16,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677097830] [2022-11-18 20:51:16,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677097830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:16,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:16,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:51:16,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316625527] [2022-11-18 20:51:16,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:16,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:51:16,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:16,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:51:16,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:51:16,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:16,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 599 transitions, 8843 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:16,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:16,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:16,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:18,531 INFO L130 PetriNetUnfolder]: 417/1336 cut-off events. [2022-11-18 20:51:18,531 INFO L131 PetriNetUnfolder]: For 27140/27140 co-relation queries the response was YES. [2022-11-18 20:51:18,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10715 conditions, 1336 events. 417/1336 cut-off events. For 27140/27140 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8819 event pairs, 40 based on Foata normal form. 1/1333 useless extension candidates. Maximal degree in co-relation 10510. Up to 852 conditions per place. [2022-11-18 20:51:18,554 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 409 selfloop transitions, 139 changer transitions 43/630 dead transitions. [2022-11-18 20:51:18,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 630 transitions, 10308 flow [2022-11-18 20:51:18,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:51:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:51:18,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2006 transitions. [2022-11-18 20:51:18,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5615901455767077 [2022-11-18 20:51:18,557 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2006 transitions. [2022-11-18 20:51:18,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2006 transitions. [2022-11-18 20:51:18,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:18,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2006 transitions. [2022-11-18 20:51:18,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.78947368421053) internal successors, (2006), 38 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:18,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:18,564 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:18,564 INFO L175 Difference]: Start difference. First operand has 576 places, 599 transitions, 8843 flow. Second operand 38 states and 2006 transitions. [2022-11-18 20:51:18,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 630 transitions, 10308 flow [2022-11-18 20:51:18,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 630 transitions, 9983 flow, removed 45 selfloop flow, removed 34 redundant places. [2022-11-18 20:51:18,912 INFO L231 Difference]: Finished difference. Result has 582 places, 571 transitions, 8437 flow [2022-11-18 20:51:18,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8532, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8437, PETRI_PLACES=582, PETRI_TRANSITIONS=571} [2022-11-18 20:51:18,913 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 494 predicate places. [2022-11-18 20:51:18,913 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 571 transitions, 8437 flow [2022-11-18 20:51:18,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:18,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:18,914 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:18,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-11-18 20:51:18,914 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:18,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:18,915 INFO L85 PathProgramCache]: Analyzing trace with hash 310374354, now seen corresponding path program 89 times [2022-11-18 20:51:18,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:18,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452709186] [2022-11-18 20:51:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:18,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:19,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:19,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452709186] [2022-11-18 20:51:19,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452709186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:19,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:19,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:51:19,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337647639] [2022-11-18 20:51:19,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:19,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:51:19,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:19,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:51:19,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:51:19,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:19,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 571 transitions, 8437 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:19,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:19,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:19,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:21,363 INFO L130 PetriNetUnfolder]: 405/1314 cut-off events. [2022-11-18 20:51:21,364 INFO L131 PetriNetUnfolder]: For 27360/27360 co-relation queries the response was YES. [2022-11-18 20:51:21,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10685 conditions, 1314 events. 405/1314 cut-off events. For 27360/27360 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8723 event pairs, 43 based on Foata normal form. 1/1313 useless extension candidates. Maximal degree in co-relation 10480. Up to 881 conditions per place. [2022-11-18 20:51:21,382 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 434 selfloop transitions, 109 changer transitions 23/605 dead transitions. [2022-11-18 20:51:21,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 605 transitions, 10095 flow [2022-11-18 20:51:21,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:51:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:51:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1755 transitions. [2022-11-18 20:51:21,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5657640232108317 [2022-11-18 20:51:21,384 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1755 transitions. [2022-11-18 20:51:21,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1755 transitions. [2022-11-18 20:51:21,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:21,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1755 transitions. [2022-11-18 20:51:21,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.18181818181818) internal successors, (1755), 33 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:21,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:21,387 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:21,388 INFO L175 Difference]: Start difference. First operand has 582 places, 571 transitions, 8437 flow. Second operand 33 states and 1755 transitions. [2022-11-18 20:51:21,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 605 transitions, 10095 flow [2022-11-18 20:51:21,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 605 transitions, 9570 flow, removed 72 selfloop flow, removed 43 redundant places. [2022-11-18 20:51:21,697 INFO L231 Difference]: Finished difference. Result has 567 places, 571 transitions, 8267 flow [2022-11-18 20:51:21,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7934, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=8267, PETRI_PLACES=567, PETRI_TRANSITIONS=571} [2022-11-18 20:51:21,697 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 479 predicate places. [2022-11-18 20:51:21,697 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 571 transitions, 8267 flow [2022-11-18 20:51:21,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:21,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:21,698 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:21,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-11-18 20:51:21,698 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:21,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash -596217238, now seen corresponding path program 90 times [2022-11-18 20:51:21,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:21,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062813266] [2022-11-18 20:51:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:21,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:22,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:22,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062813266] [2022-11-18 20:51:22,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062813266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:22,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:22,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:51:22,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375924879] [2022-11-18 20:51:22,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:22,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:51:22,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:22,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:51:22,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:51:22,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:22,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 571 transitions, 8267 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:22,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:22,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:22,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:24,552 INFO L130 PetriNetUnfolder]: 407/1309 cut-off events. [2022-11-18 20:51:24,552 INFO L131 PetriNetUnfolder]: For 29227/29227 co-relation queries the response was YES. [2022-11-18 20:51:24,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10672 conditions, 1309 events. 407/1309 cut-off events. For 29227/29227 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8664 event pairs, 36 based on Foata normal form. 1/1309 useless extension candidates. Maximal degree in co-relation 10472. Up to 832 conditions per place. [2022-11-18 20:51:24,576 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 378 selfloop transitions, 175 changer transitions 22/614 dead transitions. [2022-11-18 20:51:24,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 614 transitions, 10149 flow [2022-11-18 20:51:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 20:51:24,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-18 20:51:24,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2465 transitions. [2022-11-18 20:51:24,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5579447713897692 [2022-11-18 20:51:24,579 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2465 transitions. [2022-11-18 20:51:24,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2465 transitions. [2022-11-18 20:51:24,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:24,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2465 transitions. [2022-11-18 20:51:24,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 52.4468085106383) internal successors, (2465), 47 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:24,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:24,583 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:24,584 INFO L175 Difference]: Start difference. First operand has 567 places, 571 transitions, 8267 flow. Second operand 47 states and 2465 transitions. [2022-11-18 20:51:24,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 614 transitions, 10149 flow [2022-11-18 20:51:24,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 614 transitions, 9849 flow, removed 57 selfloop flow, removed 32 redundant places. [2022-11-18 20:51:24,885 INFO L231 Difference]: Finished difference. Result has 587 places, 577 transitions, 8648 flow [2022-11-18 20:51:24,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7995, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=8648, PETRI_PLACES=587, PETRI_TRANSITIONS=577} [2022-11-18 20:51:24,886 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 499 predicate places. [2022-11-18 20:51:24,886 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 577 transitions, 8648 flow [2022-11-18 20:51:24,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:24,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:24,886 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:24,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-11-18 20:51:24,887 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:24,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:24,887 INFO L85 PathProgramCache]: Analyzing trace with hash 618312006, now seen corresponding path program 91 times [2022-11-18 20:51:24,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:24,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28073606] [2022-11-18 20:51:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:24,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:25,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:25,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28073606] [2022-11-18 20:51:25,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28073606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:25,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:25,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:51:25,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201487871] [2022-11-18 20:51:25,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:25,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:51:25,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:25,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:51:25,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:51:25,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:25,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 577 transitions, 8648 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:25,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:25,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:25,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:27,753 INFO L130 PetriNetUnfolder]: 401/1301 cut-off events. [2022-11-18 20:51:27,753 INFO L131 PetriNetUnfolder]: For 28464/28464 co-relation queries the response was YES. [2022-11-18 20:51:27,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10723 conditions, 1301 events. 401/1301 cut-off events. For 28464/28464 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8645 event pairs, 43 based on Foata normal form. 1/1300 useless extension candidates. Maximal degree in co-relation 10520. Up to 851 conditions per place. [2022-11-18 20:51:27,775 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 389 selfloop transitions, 158 changer transitions 22/608 dead transitions. [2022-11-18 20:51:27,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 608 transitions, 10098 flow [2022-11-18 20:51:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 20:51:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 20:51:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2358 transitions. [2022-11-18 20:51:27,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-18 20:51:27,778 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2358 transitions. [2022-11-18 20:51:27,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2358 transitions. [2022-11-18 20:51:27,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:27,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2358 transitions. [2022-11-18 20:51:27,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 52.4) internal successors, (2358), 45 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:27,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:27,782 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:27,782 INFO L175 Difference]: Start difference. First operand has 587 places, 577 transitions, 8648 flow. Second operand 45 states and 2358 transitions. [2022-11-18 20:51:27,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 608 transitions, 10098 flow [2022-11-18 20:51:28,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 608 transitions, 9771 flow, removed 60 selfloop flow, removed 40 redundant places. [2022-11-18 20:51:28,106 INFO L231 Difference]: Finished difference. Result has 592 places, 572 transitions, 8653 flow [2022-11-18 20:51:28,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8338, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8653, PETRI_PLACES=592, PETRI_TRANSITIONS=572} [2022-11-18 20:51:28,107 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 504 predicate places. [2022-11-18 20:51:28,107 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 572 transitions, 8653 flow [2022-11-18 20:51:28,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:28,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:28,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:28,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-11-18 20:51:28,107 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:28,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:28,108 INFO L85 PathProgramCache]: Analyzing trace with hash 944180584, now seen corresponding path program 92 times [2022-11-18 20:51:28,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:28,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448926724] [2022-11-18 20:51:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:28,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:28,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:28,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448926724] [2022-11-18 20:51:28,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448926724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:28,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:28,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:51:28,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961630462] [2022-11-18 20:51:28,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:28,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:51:28,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:28,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:51:28,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:51:28,595 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:28,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 572 transitions, 8653 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:28,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:28,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:28,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:30,884 INFO L130 PetriNetUnfolder]: 406/1315 cut-off events. [2022-11-18 20:51:30,884 INFO L131 PetriNetUnfolder]: For 29971/29971 co-relation queries the response was YES. [2022-11-18 20:51:30,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11020 conditions, 1315 events. 406/1315 cut-off events. For 29971/29971 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8742 event pairs, 42 based on Foata normal form. 1/1314 useless extension candidates. Maximal degree in co-relation 10815. Up to 757 conditions per place. [2022-11-18 20:51:30,907 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 334 selfloop transitions, 230 changer transitions 21/624 dead transitions. [2022-11-18 20:51:30,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 624 transitions, 10807 flow [2022-11-18 20:51:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-18 20:51:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-18 20:51:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2423 transitions. [2022-11-18 20:51:30,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5603607770582794 [2022-11-18 20:51:30,910 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2423 transitions. [2022-11-18 20:51:30,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2423 transitions. [2022-11-18 20:51:30,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:30,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2423 transitions. [2022-11-18 20:51:30,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 52.67391304347826) internal successors, (2423), 46 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:30,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:30,914 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:30,914 INFO L175 Difference]: Start difference. First operand has 592 places, 572 transitions, 8653 flow. Second operand 46 states and 2423 transitions. [2022-11-18 20:51:30,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 624 transitions, 10807 flow [2022-11-18 20:51:31,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 624 transitions, 10327 flow, removed 24 selfloop flow, removed 46 redundant places. [2022-11-18 20:51:31,253 INFO L231 Difference]: Finished difference. Result has 591 places, 582 transitions, 9124 flow [2022-11-18 20:51:31,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8208, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=9124, PETRI_PLACES=591, PETRI_TRANSITIONS=582} [2022-11-18 20:51:31,254 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-18 20:51:31,254 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 582 transitions, 9124 flow [2022-11-18 20:51:31,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:31,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:31,255 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:31,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-11-18 20:51:31,255 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash 196111776, now seen corresponding path program 93 times [2022-11-18 20:51:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:31,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346036082] [2022-11-18 20:51:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:31,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:31,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:31,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346036082] [2022-11-18 20:51:31,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346036082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:31,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:31,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:51:31,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855219334] [2022-11-18 20:51:31,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:31,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:51:31,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:31,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:51:31,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:51:31,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:31,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 582 transitions, 9124 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:31,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:31,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:31,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:33,964 INFO L130 PetriNetUnfolder]: 401/1315 cut-off events. [2022-11-18 20:51:33,964 INFO L131 PetriNetUnfolder]: For 30550/30550 co-relation queries the response was YES. [2022-11-18 20:51:33,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11064 conditions, 1315 events. 401/1315 cut-off events. For 30550/30550 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8832 event pairs, 40 based on Foata normal form. 1/1314 useless extension candidates. Maximal degree in co-relation 10859. Up to 790 conditions per place. [2022-11-18 20:51:33,985 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 359 selfloop transitions, 193 changer transitions 27/618 dead transitions. [2022-11-18 20:51:33,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 618 transitions, 10720 flow [2022-11-18 20:51:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 20:51:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-18 20:51:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2264 transitions. [2022-11-18 20:51:33,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601187530925285 [2022-11-18 20:51:33,988 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2264 transitions. [2022-11-18 20:51:33,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2264 transitions. [2022-11-18 20:51:33,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:33,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2264 transitions. [2022-11-18 20:51:33,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.651162790697676) internal successors, (2264), 43 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:33,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:33,992 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:33,992 INFO L175 Difference]: Start difference. First operand has 591 places, 582 transitions, 9124 flow. Second operand 43 states and 2264 transitions. [2022-11-18 20:51:33,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 618 transitions, 10720 flow [2022-11-18 20:51:34,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 618 transitions, 10248 flow, removed 127 selfloop flow, removed 34 redundant places. [2022-11-18 20:51:34,334 INFO L231 Difference]: Finished difference. Result has 600 places, 574 transitions, 9102 flow [2022-11-18 20:51:34,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8684, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=9102, PETRI_PLACES=600, PETRI_TRANSITIONS=574} [2022-11-18 20:51:34,335 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 512 predicate places. [2022-11-18 20:51:34,335 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 574 transitions, 9102 flow [2022-11-18 20:51:34,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:34,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:34,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:34,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-11-18 20:51:34,336 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:34,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash 984579434, now seen corresponding path program 94 times [2022-11-18 20:51:34,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:34,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900117291] [2022-11-18 20:51:34,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:34,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:34,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:34,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900117291] [2022-11-18 20:51:34,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900117291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:34,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:34,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:51:34,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378590372] [2022-11-18 20:51:34,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:34,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:51:34,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:34,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:51:34,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:51:34,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:34,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 574 transitions, 9102 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:34,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:34,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:34,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:36,911 INFO L130 PetriNetUnfolder]: 414/1351 cut-off events. [2022-11-18 20:51:36,911 INFO L131 PetriNetUnfolder]: For 31190/31190 co-relation queries the response was YES. [2022-11-18 20:51:36,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11452 conditions, 1351 events. 414/1351 cut-off events. For 31190/31190 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9089 event pairs, 42 based on Foata normal form. 1/1350 useless extension candidates. Maximal degree in co-relation 11244. Up to 830 conditions per place. [2022-11-18 20:51:36,935 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 406 selfloop transitions, 187 changer transitions 26/658 dead transitions. [2022-11-18 20:51:36,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 658 transitions, 11643 flow [2022-11-18 20:51:36,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:51:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-18 20:51:36,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2161 transitions. [2022-11-18 20:51:36,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5607161390762844 [2022-11-18 20:51:36,937 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2161 transitions. [2022-11-18 20:51:36,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2161 transitions. [2022-11-18 20:51:36,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:36,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2161 transitions. [2022-11-18 20:51:36,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.707317073170735) internal successors, (2161), 41 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:36,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:36,941 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:36,941 INFO L175 Difference]: Start difference. First operand has 600 places, 574 transitions, 9102 flow. Second operand 41 states and 2161 transitions. [2022-11-18 20:51:36,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 658 transitions, 11643 flow [2022-11-18 20:51:37,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 658 transitions, 11124 flow, removed 18 selfloop flow, removed 43 redundant places. [2022-11-18 20:51:37,300 INFO L231 Difference]: Finished difference. Result has 595 places, 607 transitions, 9690 flow [2022-11-18 20:51:37,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8619, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=9690, PETRI_PLACES=595, PETRI_TRANSITIONS=607} [2022-11-18 20:51:37,300 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 507 predicate places. [2022-11-18 20:51:37,300 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 607 transitions, 9690 flow [2022-11-18 20:51:37,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:37,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:37,301 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:37,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-11-18 20:51:37,301 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:37,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:37,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2093638478, now seen corresponding path program 95 times [2022-11-18 20:51:37,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:37,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269856816] [2022-11-18 20:51:37,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:37,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:37,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:37,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269856816] [2022-11-18 20:51:37,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269856816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:37,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:37,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:51:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197494273] [2022-11-18 20:51:37,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:37,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:51:37,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:37,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:51:37,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:51:37,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:37,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 607 transitions, 9690 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:37,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:37,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:37,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:39,821 INFO L130 PetriNetUnfolder]: 406/1333 cut-off events. [2022-11-18 20:51:39,821 INFO L131 PetriNetUnfolder]: For 31788/31788 co-relation queries the response was YES. [2022-11-18 20:51:39,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11324 conditions, 1333 events. 406/1333 cut-off events. For 31788/31788 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8956 event pairs, 51 based on Foata normal form. 1/1332 useless extension candidates. Maximal degree in co-relation 11116. Up to 927 conditions per place. [2022-11-18 20:51:39,847 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 474 selfloop transitions, 106 changer transitions 20/639 dead transitions. [2022-11-18 20:51:39,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 639 transitions, 11196 flow [2022-11-18 20:51:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:51:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:51:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1946 transitions. [2022-11-18 20:51:39,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5595169637722829 [2022-11-18 20:51:39,850 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1946 transitions. [2022-11-18 20:51:39,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1946 transitions. [2022-11-18 20:51:39,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:39,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1946 transitions. [2022-11-18 20:51:39,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.5945945945946) internal successors, (1946), 37 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:39,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:39,853 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:39,854 INFO L175 Difference]: Start difference. First operand has 595 places, 607 transitions, 9690 flow. Second operand 37 states and 1946 transitions. [2022-11-18 20:51:39,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 639 transitions, 11196 flow [2022-11-18 20:51:40,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 639 transitions, 10878 flow, removed 86 selfloop flow, removed 30 redundant places. [2022-11-18 20:51:40,243 INFO L231 Difference]: Finished difference. Result has 604 places, 606 transitions, 9596 flow [2022-11-18 20:51:40,244 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9385, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9596, PETRI_PLACES=604, PETRI_TRANSITIONS=606} [2022-11-18 20:51:40,244 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 516 predicate places. [2022-11-18 20:51:40,244 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 606 transitions, 9596 flow [2022-11-18 20:51:40,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:40,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:40,245 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:40,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-11-18 20:51:40,245 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:40,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:40,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1715818286, now seen corresponding path program 96 times [2022-11-18 20:51:40,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:40,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759754629] [2022-11-18 20:51:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:40,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:40,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:40,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759754629] [2022-11-18 20:51:40,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759754629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:40,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:40,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:51:40,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847744927] [2022-11-18 20:51:40,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:40,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:51:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:40,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:51:40,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:51:40,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:40,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 606 transitions, 9596 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:40,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:40,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:40,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:42,857 INFO L130 PetriNetUnfolder]: 402/1327 cut-off events. [2022-11-18 20:51:42,857 INFO L131 PetriNetUnfolder]: For 29276/29276 co-relation queries the response was YES. [2022-11-18 20:51:42,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11164 conditions, 1327 events. 402/1327 cut-off events. For 29276/29276 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8926 event pairs, 50 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 10951. Up to 932 conditions per place. [2022-11-18 20:51:42,885 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 478 selfloop transitions, 96 changer transitions 18/631 dead transitions. [2022-11-18 20:51:42,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 631 transitions, 10990 flow [2022-11-18 20:51:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:51:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:51:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1893 transitions. [2022-11-18 20:51:42,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5593971631205674 [2022-11-18 20:51:42,888 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1893 transitions. [2022-11-18 20:51:42,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1893 transitions. [2022-11-18 20:51:42,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:42,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1893 transitions. [2022-11-18 20:51:42,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.583333333333336) internal successors, (1893), 36 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:42,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:42,891 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:42,891 INFO L175 Difference]: Start difference. First operand has 604 places, 606 transitions, 9596 flow. Second operand 36 states and 1893 transitions. [2022-11-18 20:51:42,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 631 transitions, 10990 flow [2022-11-18 20:51:43,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 631 transitions, 10715 flow, removed 32 selfloop flow, removed 36 redundant places. [2022-11-18 20:51:43,260 INFO L231 Difference]: Finished difference. Result has 605 places, 603 transitions, 9520 flow [2022-11-18 20:51:43,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9337, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9520, PETRI_PLACES=605, PETRI_TRANSITIONS=603} [2022-11-18 20:51:43,261 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 517 predicate places. [2022-11-18 20:51:43,261 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 603 transitions, 9520 flow [2022-11-18 20:51:43,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:43,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:43,262 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:43,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-11-18 20:51:43,262 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:43,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:43,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1752975368, now seen corresponding path program 97 times [2022-11-18 20:51:43,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:43,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393365176] [2022-11-18 20:51:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:43,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:43,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:43,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393365176] [2022-11-18 20:51:43,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393365176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:43,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:43,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:51:43,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361217988] [2022-11-18 20:51:43,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:43,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:51:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:43,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:51:43,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:51:43,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:43,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 603 transitions, 9520 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:43,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:43,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:43,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:45,976 INFO L130 PetriNetUnfolder]: 400/1329 cut-off events. [2022-11-18 20:51:45,976 INFO L131 PetriNetUnfolder]: For 29544/29544 co-relation queries the response was YES. [2022-11-18 20:51:45,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11179 conditions, 1329 events. 400/1329 cut-off events. For 29544/29544 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8946 event pairs, 40 based on Foata normal form. 1/1328 useless extension candidates. Maximal degree in co-relation 10965. Up to 951 conditions per place. [2022-11-18 20:51:45,998 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 487 selfloop transitions, 89 changer transitions 17/632 dead transitions. [2022-11-18 20:51:45,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 632 transitions, 11018 flow [2022-11-18 20:51:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:51:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:51:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1991 transitions. [2022-11-18 20:51:46,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5573908174692049 [2022-11-18 20:51:46,001 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1991 transitions. [2022-11-18 20:51:46,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1991 transitions. [2022-11-18 20:51:46,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:46,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1991 transitions. [2022-11-18 20:51:46,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.39473684210526) internal successors, (1991), 38 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:46,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:46,004 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:46,004 INFO L175 Difference]: Start difference. First operand has 605 places, 603 transitions, 9520 flow. Second operand 38 states and 1991 transitions. [2022-11-18 20:51:46,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 632 transitions, 11018 flow [2022-11-18 20:51:46,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 632 transitions, 10775 flow, removed 25 selfloop flow, removed 35 redundant places. [2022-11-18 20:51:46,349 INFO L231 Difference]: Finished difference. Result has 608 places, 605 transitions, 9575 flow [2022-11-18 20:51:46,349 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9301, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9575, PETRI_PLACES=608, PETRI_TRANSITIONS=605} [2022-11-18 20:51:46,350 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 520 predicate places. [2022-11-18 20:51:46,350 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 605 transitions, 9575 flow [2022-11-18 20:51:46,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:46,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:46,350 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:46,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-11-18 20:51:46,350 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:46,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash -481131398, now seen corresponding path program 98 times [2022-11-18 20:51:46,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:46,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890150472] [2022-11-18 20:51:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:46,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:46,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:46,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890150472] [2022-11-18 20:51:46,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890150472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:46,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:46,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:51:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759236982] [2022-11-18 20:51:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:46,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:51:46,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:46,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:51:46,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:51:46,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:46,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 605 transitions, 9575 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:46,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:46,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:46,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:49,334 INFO L130 PetriNetUnfolder]: 400/1336 cut-off events. [2022-11-18 20:51:49,334 INFO L131 PetriNetUnfolder]: For 31105/31105 co-relation queries the response was YES. [2022-11-18 20:51:49,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11298 conditions, 1336 events. 400/1336 cut-off events. For 31105/31105 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9058 event pairs, 38 based on Foata normal form. 1/1335 useless extension candidates. Maximal degree in co-relation 11084. Up to 777 conditions per place. [2022-11-18 20:51:49,433 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 364 selfloop transitions, 225 changer transitions 20/648 dead transitions. [2022-11-18 20:51:49,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 648 transitions, 11594 flow [2022-11-18 20:51:49,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:51:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-18 20:51:49,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2515 transitions. [2022-11-18 20:51:49,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574024822695035 [2022-11-18 20:51:49,437 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2515 transitions. [2022-11-18 20:51:49,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2515 transitions. [2022-11-18 20:51:49,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:49,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2515 transitions. [2022-11-18 20:51:49,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 52.395833333333336) internal successors, (2515), 48 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:49,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:49,444 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:49,444 INFO L175 Difference]: Start difference. First operand has 608 places, 605 transitions, 9575 flow. Second operand 48 states and 2515 transitions. [2022-11-18 20:51:49,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 648 transitions, 11594 flow [2022-11-18 20:51:49,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 648 transitions, 11289 flow, removed 65 selfloop flow, removed 33 redundant places. [2022-11-18 20:51:49,856 INFO L231 Difference]: Finished difference. Result has 622 places, 611 transitions, 10034 flow [2022-11-18 20:51:49,856 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9280, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=10034, PETRI_PLACES=622, PETRI_TRANSITIONS=611} [2022-11-18 20:51:49,856 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 534 predicate places. [2022-11-18 20:51:49,856 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 611 transitions, 10034 flow [2022-11-18 20:51:49,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:49,857 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:49,857 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:49,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-11-18 20:51:49,857 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:49,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash 521647042, now seen corresponding path program 99 times [2022-11-18 20:51:49,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:49,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522306405] [2022-11-18 20:51:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:49,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:50,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:50,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522306405] [2022-11-18 20:51:50,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522306405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:50,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:50,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:51:50,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422536216] [2022-11-18 20:51:50,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:50,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:51:50,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:50,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:51:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:51:50,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:50,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 611 transitions, 10034 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:50,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:50,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:50,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:52,461 INFO L130 PetriNetUnfolder]: 395/1308 cut-off events. [2022-11-18 20:51:52,461 INFO L131 PetriNetUnfolder]: For 30493/30493 co-relation queries the response was YES. [2022-11-18 20:51:52,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11268 conditions, 1308 events. 395/1308 cut-off events. For 30493/30493 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8746 event pairs, 38 based on Foata normal form. 1/1307 useless extension candidates. Maximal degree in co-relation 11052. Up to 926 conditions per place. [2022-11-18 20:51:52,485 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 485 selfloop transitions, 75 changer transitions 31/630 dead transitions. [2022-11-18 20:51:52,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 630 transitions, 11302 flow [2022-11-18 20:51:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:51:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:51:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1788 transitions. [2022-11-18 20:51:52,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5594493116395495 [2022-11-18 20:51:52,487 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1788 transitions. [2022-11-18 20:51:52,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1788 transitions. [2022-11-18 20:51:52,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:52,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1788 transitions. [2022-11-18 20:51:52,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.588235294117645) internal successors, (1788), 34 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:52,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:52,492 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:52,492 INFO L175 Difference]: Start difference. First operand has 622 places, 611 transitions, 10034 flow. Second operand 34 states and 1788 transitions. [2022-11-18 20:51:52,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 630 transitions, 11302 flow [2022-11-18 20:51:52,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 630 transitions, 10921 flow, removed 75 selfloop flow, removed 41 redundant places. [2022-11-18 20:51:52,869 INFO L231 Difference]: Finished difference. Result has 613 places, 590 transitions, 9541 flow [2022-11-18 20:51:52,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9659, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9541, PETRI_PLACES=613, PETRI_TRANSITIONS=590} [2022-11-18 20:51:52,870 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 525 predicate places. [2022-11-18 20:51:52,870 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 590 transitions, 9541 flow [2022-11-18 20:51:52,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:52,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:52,870 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:52,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-11-18 20:51:52,870 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:52,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash -773918718, now seen corresponding path program 100 times [2022-11-18 20:51:52,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:52,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939781354] [2022-11-18 20:51:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:52,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:53,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:53,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939781354] [2022-11-18 20:51:53,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939781354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:53,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:53,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:51:53,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048070502] [2022-11-18 20:51:53,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:53,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:51:53,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:51:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:51:53,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:53,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 590 transitions, 9541 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:53,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:53,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:53,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:55,418 INFO L130 PetriNetUnfolder]: 394/1295 cut-off events. [2022-11-18 20:51:55,418 INFO L131 PetriNetUnfolder]: For 28442/28442 co-relation queries the response was YES. [2022-11-18 20:51:55,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11071 conditions, 1295 events. 394/1295 cut-off events. For 28442/28442 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8579 event pairs, 52 based on Foata normal form. 1/1294 useless extension candidates. Maximal degree in co-relation 10854. Up to 901 conditions per place. [2022-11-18 20:51:55,444 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 466 selfloop transitions, 93 changer transitions 23/621 dead transitions. [2022-11-18 20:51:55,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 621 transitions, 11038 flow [2022-11-18 20:51:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:51:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:51:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2002 transitions. [2022-11-18 20:51:55,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5604703247480403 [2022-11-18 20:51:55,449 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2002 transitions. [2022-11-18 20:51:55,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2002 transitions. [2022-11-18 20:51:55,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:55,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2002 transitions. [2022-11-18 20:51:55,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.68421052631579) internal successors, (2002), 38 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:55,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:55,453 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:55,453 INFO L175 Difference]: Start difference. First operand has 613 places, 590 transitions, 9541 flow. Second operand 38 states and 2002 transitions. [2022-11-18 20:51:55,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 621 transitions, 11038 flow [2022-11-18 20:51:55,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 621 transitions, 10617 flow, removed 54 selfloop flow, removed 43 redundant places. [2022-11-18 20:51:55,853 INFO L231 Difference]: Finished difference. Result has 591 places, 587 transitions, 9385 flow [2022-11-18 20:51:55,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9146, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9385, PETRI_PLACES=591, PETRI_TRANSITIONS=587} [2022-11-18 20:51:55,854 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-18 20:51:55,854 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 587 transitions, 9385 flow [2022-11-18 20:51:55,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:55,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:55,855 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:55,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-11-18 20:51:55,860 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:55,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:55,861 INFO L85 PathProgramCache]: Analyzing trace with hash 948382796, now seen corresponding path program 101 times [2022-11-18 20:51:55,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:55,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700554617] [2022-11-18 20:51:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:55,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:56,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:56,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700554617] [2022-11-18 20:51:56,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700554617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:56,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:56,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:51:56,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770215061] [2022-11-18 20:51:56,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:56,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:51:56,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:56,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:51:56,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:51:56,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:56,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 587 transitions, 9385 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:56,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:56,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:56,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:58,533 INFO L130 PetriNetUnfolder]: 392/1290 cut-off events. [2022-11-18 20:51:58,533 INFO L131 PetriNetUnfolder]: For 26969/26969 co-relation queries the response was YES. [2022-11-18 20:51:58,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10978 conditions, 1290 events. 392/1290 cut-off events. For 26969/26969 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8544 event pairs, 51 based on Foata normal form. 1/1289 useless extension candidates. Maximal degree in co-relation 10767. Up to 769 conditions per place. [2022-11-18 20:51:58,559 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 358 selfloop transitions, 216 changer transitions 23/636 dead transitions. [2022-11-18 20:51:58,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 636 transitions, 11428 flow [2022-11-18 20:51:58,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:51:58,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-18 20:51:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2159 transitions. [2022-11-18 20:51:58,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.560197197716658 [2022-11-18 20:51:58,562 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2159 transitions. [2022-11-18 20:51:58,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2159 transitions. [2022-11-18 20:51:58,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:58,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2159 transitions. [2022-11-18 20:51:58,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.65853658536585) internal successors, (2159), 41 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,569 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,569 INFO L175 Difference]: Start difference. First operand has 591 places, 587 transitions, 9385 flow. Second operand 41 states and 2159 transitions. [2022-11-18 20:51:58,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 636 transitions, 11428 flow [2022-11-18 20:51:58,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 636 transitions, 11109 flow, removed 53 selfloop flow, removed 35 redundant places. [2022-11-18 20:51:58,945 INFO L231 Difference]: Finished difference. Result has 594 places, 596 transitions, 9858 flow [2022-11-18 20:51:58,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9072, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=9858, PETRI_PLACES=594, PETRI_TRANSITIONS=596} [2022-11-18 20:51:58,946 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 506 predicate places. [2022-11-18 20:51:58,946 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 596 transitions, 9858 flow [2022-11-18 20:51:58,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:58,947 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:58,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-11-18 20:51:58,948 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:58,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:58,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1741176090, now seen corresponding path program 102 times [2022-11-18 20:51:58,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:58,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613681162] [2022-11-18 20:51:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:58,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:59,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:59,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613681162] [2022-11-18 20:51:59,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613681162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:59,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:59,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:51:59,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079363417] [2022-11-18 20:51:59,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:59,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:51:59,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:59,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:51:59,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:51:59,446 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:51:59,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 596 transitions, 9858 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:59,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:59,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:51:59,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:01,297 INFO L130 PetriNetUnfolder]: 391/1259 cut-off events. [2022-11-18 20:52:01,298 INFO L131 PetriNetUnfolder]: For 27760/27760 co-relation queries the response was YES. [2022-11-18 20:52:01,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11014 conditions, 1259 events. 391/1259 cut-off events. For 27760/27760 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8193 event pairs, 52 based on Foata normal form. 1/1258 useless extension candidates. Maximal degree in co-relation 10800. Up to 895 conditions per place. [2022-11-18 20:52:01,322 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 474 selfloop transitions, 92 changer transitions 18/623 dead transitions. [2022-11-18 20:52:01,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 623 transitions, 11353 flow [2022-11-18 20:52:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:52:01,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:52:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1899 transitions. [2022-11-18 20:52:01,324 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-11-18 20:52:01,324 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1899 transitions. [2022-11-18 20:52:01,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1899 transitions. [2022-11-18 20:52:01,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:01,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1899 transitions. [2022-11-18 20:52:01,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.75) internal successors, (1899), 36 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,328 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,328 INFO L175 Difference]: Start difference. First operand has 594 places, 596 transitions, 9858 flow. Second operand 36 states and 1899 transitions. [2022-11-18 20:52:01,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 623 transitions, 11353 flow [2022-11-18 20:52:01,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 623 transitions, 10853 flow, removed 71 selfloop flow, removed 38 redundant places. [2022-11-18 20:52:01,698 INFO L231 Difference]: Finished difference. Result has 591 places, 595 transitions, 9640 flow [2022-11-18 20:52:01,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9376, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9640, PETRI_PLACES=591, PETRI_TRANSITIONS=595} [2022-11-18 20:52:01,699 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-18 20:52:01,699 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 595 transitions, 9640 flow [2022-11-18 20:52:01,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:01,700 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:01,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-11-18 20:52:01,700 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:52:01,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:01,700 INFO L85 PathProgramCache]: Analyzing trace with hash -470436548, now seen corresponding path program 103 times [2022-11-18 20:52:01,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:01,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502234693] [2022-11-18 20:52:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:01,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:02,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:02,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502234693] [2022-11-18 20:52:02,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502234693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:02,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:02,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:52:02,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851156128] [2022-11-18 20:52:02,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:02,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:52:02,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:02,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:52:02,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:52:02,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:52:02,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 595 transitions, 9640 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:02,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:02,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:52:02,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:04,747 INFO L130 PetriNetUnfolder]: 397/1292 cut-off events. [2022-11-18 20:52:04,747 INFO L131 PetriNetUnfolder]: For 26010/26010 co-relation queries the response was YES. [2022-11-18 20:52:04,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11068 conditions, 1292 events. 397/1292 cut-off events. For 26010/26010 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8505 event pairs, 49 based on Foata normal form. 1/1292 useless extension candidates. Maximal degree in co-relation 10857. Up to 799 conditions per place. [2022-11-18 20:52:04,769 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 409 selfloop transitions, 188 changer transitions 17/653 dead transitions. [2022-11-18 20:52:04,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 653 transitions, 11916 flow [2022-11-18 20:52:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:52:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-18 20:52:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2512 transitions. [2022-11-18 20:52:04,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5567375886524822 [2022-11-18 20:52:04,772 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2512 transitions. [2022-11-18 20:52:04,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2512 transitions. [2022-11-18 20:52:04,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:04,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2512 transitions. [2022-11-18 20:52:04,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 52.333333333333336) internal successors, (2512), 48 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:04,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:04,776 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:04,776 INFO L175 Difference]: Start difference. First operand has 591 places, 595 transitions, 9640 flow. Second operand 48 states and 2512 transitions. [2022-11-18 20:52:04,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 653 transitions, 11916 flow [2022-11-18 20:52:05,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 653 transitions, 11589 flow, removed 70 selfloop flow, removed 35 redundant places. [2022-11-18 20:52:05,113 INFO L231 Difference]: Finished difference. Result has 603 places, 613 transitions, 10139 flow [2022-11-18 20:52:05,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9323, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=10139, PETRI_PLACES=603, PETRI_TRANSITIONS=613} [2022-11-18 20:52:05,113 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 515 predicate places. [2022-11-18 20:52:05,114 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 613 transitions, 10139 flow [2022-11-18 20:52:05,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:05,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:05,114 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:05,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-11-18 20:52:05,115 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:52:05,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:05,115 INFO L85 PathProgramCache]: Analyzing trace with hash 123234612, now seen corresponding path program 104 times [2022-11-18 20:52:05,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:05,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079765874] [2022-11-18 20:52:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:05,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:05,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:05,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079765874] [2022-11-18 20:52:05,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079765874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:05,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:05,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:52:05,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787289818] [2022-11-18 20:52:05,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:05,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:52:05,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:05,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:52:05,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:52:05,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:52:05,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 613 transitions, 10139 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:05,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:05,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:52:05,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:08,022 INFO L130 PetriNetUnfolder]: 392/1274 cut-off events. [2022-11-18 20:52:08,022 INFO L131 PetriNetUnfolder]: For 25310/25310 co-relation queries the response was YES. [2022-11-18 20:52:08,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10983 conditions, 1274 events. 392/1274 cut-off events. For 25310/25310 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8361 event pairs, 48 based on Foata normal form. 1/1274 useless extension candidates. Maximal degree in co-relation 10771. Up to 924 conditions per place. [2022-11-18 20:52:08,063 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 493 selfloop transitions, 74 changer transitions 25/631 dead transitions. [2022-11-18 20:52:08,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 631 transitions, 11422 flow [2022-11-18 20:52:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:52:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:52:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1835 transitions. [2022-11-18 20:52:08,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5577507598784195 [2022-11-18 20:52:08,066 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1835 transitions. [2022-11-18 20:52:08,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1835 transitions. [2022-11-18 20:52:08,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:08,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1835 transitions. [2022-11-18 20:52:08,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.42857142857143) internal successors, (1835), 35 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:08,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:08,072 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:08,072 INFO L175 Difference]: Start difference. First operand has 603 places, 613 transitions, 10139 flow. Second operand 35 states and 1835 transitions. [2022-11-18 20:52:08,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 631 transitions, 11422 flow [2022-11-18 20:52:08,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 631 transitions, 11076 flow, removed 52 selfloop flow, removed 41 redundant places. [2022-11-18 20:52:08,906 INFO L231 Difference]: Finished difference. Result has 596 places, 597 transitions, 9708 flow [2022-11-18 20:52:08,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9799, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9708, PETRI_PLACES=596, PETRI_TRANSITIONS=597} [2022-11-18 20:52:08,907 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 508 predicate places. [2022-11-18 20:52:08,907 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 597 transitions, 9708 flow [2022-11-18 20:52:08,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:08,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:08,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:08,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-11-18 20:52:08,908 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:52:08,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:08,908 INFO L85 PathProgramCache]: Analyzing trace with hash 839897168, now seen corresponding path program 105 times [2022-11-18 20:52:08,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:08,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376974136] [2022-11-18 20:52:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:08,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:09,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:09,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376974136] [2022-11-18 20:52:09,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376974136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:09,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:09,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:52:09,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636234535] [2022-11-18 20:52:09,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:09,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:52:09,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:09,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:52:09,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:52:09,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:52:09,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 597 transitions, 9708 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:09,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:09,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:52:09,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:11,566 INFO L130 PetriNetUnfolder]: 387/1250 cut-off events. [2022-11-18 20:52:11,566 INFO L131 PetriNetUnfolder]: For 24157/24157 co-relation queries the response was YES. [2022-11-18 20:52:11,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10716 conditions, 1250 events. 387/1250 cut-off events. For 24157/24157 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8119 event pairs, 48 based on Foata normal form. 1/1250 useless extension candidates. Maximal degree in co-relation 10503. Up to 894 conditions per place. [2022-11-18 20:52:11,605 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 479 selfloop transitions, 78 changer transitions 19/615 dead transitions. [2022-11-18 20:52:11,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 615 transitions, 10954 flow [2022-11-18 20:52:11,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:52:11,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:52:11,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1790 transitions. [2022-11-18 20:52:11,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5600750938673341 [2022-11-18 20:52:11,608 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1790 transitions. [2022-11-18 20:52:11,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1790 transitions. [2022-11-18 20:52:11,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:11,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1790 transitions. [2022-11-18 20:52:11,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.64705882352941) internal successors, (1790), 34 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:11,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:11,613 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:11,613 INFO L175 Difference]: Start difference. First operand has 596 places, 597 transitions, 9708 flow. Second operand 34 states and 1790 transitions. [2022-11-18 20:52:11,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 615 transitions, 10954 flow [2022-11-18 20:52:12,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 615 transitions, 10626 flow, removed 23 selfloop flow, removed 41 redundant places. [2022-11-18 20:52:12,304 INFO L231 Difference]: Finished difference. Result has 569 places, 587 transitions, 9493 flow [2022-11-18 20:52:12,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9388, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9493, PETRI_PLACES=569, PETRI_TRANSITIONS=587} [2022-11-18 20:52:12,305 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 481 predicate places. [2022-11-18 20:52:12,305 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 587 transitions, 9493 flow [2022-11-18 20:52:12,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:12,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:12,306 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:12,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-11-18 20:52:12,306 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:52:12,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:12,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1224198230, now seen corresponding path program 106 times [2022-11-18 20:52:12,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:12,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382102263] [2022-11-18 20:52:12,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:12,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:12,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:12,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382102263] [2022-11-18 20:52:12,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382102263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:12,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:12,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:52:12,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300510039] [2022-11-18 20:52:12,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:12,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:52:12,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:12,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:52:12,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:52:12,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:52:12,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 587 transitions, 9493 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:12,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:12,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:52:12,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:14,759 INFO L130 PetriNetUnfolder]: 383/1236 cut-off events. [2022-11-18 20:52:14,759 INFO L131 PetriNetUnfolder]: For 23826/23826 co-relation queries the response was YES. [2022-11-18 20:52:14,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10505 conditions, 1236 events. 383/1236 cut-off events. For 23826/23826 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7989 event pairs, 51 based on Foata normal form. 1/1235 useless extension candidates. Maximal degree in co-relation 10304. Up to 885 conditions per place. [2022-11-18 20:52:14,796 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 463 selfloop transitions, 56 changer transitions 46/604 dead transitions. [2022-11-18 20:52:14,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 604 transitions, 10711 flow [2022-11-18 20:52:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:52:14,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:52:14,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1688 transitions. [2022-11-18 20:52:14,798 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-11-18 20:52:14,798 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1688 transitions. [2022-11-18 20:52:14,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1688 transitions. [2022-11-18 20:52:14,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:14,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1688 transitions. [2022-11-18 20:52:14,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.75) internal successors, (1688), 32 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:14,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:14,803 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:14,803 INFO L175 Difference]: Start difference. First operand has 569 places, 587 transitions, 9493 flow. Second operand 32 states and 1688 transitions. [2022-11-18 20:52:14,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 604 transitions, 10711 flow [2022-11-18 20:52:15,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 604 transitions, 10484 flow, removed 12 selfloop flow, removed 34 redundant places. [2022-11-18 20:52:15,495 INFO L231 Difference]: Finished difference. Result has 555 places, 549 transitions, 8980 flow [2022-11-18 20:52:15,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9274, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=8980, PETRI_PLACES=555, PETRI_TRANSITIONS=549} [2022-11-18 20:52:15,496 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 467 predicate places. [2022-11-18 20:52:15,496 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 549 transitions, 8980 flow [2022-11-18 20:52:15,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:15,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:15,496 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:15,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-11-18 20:52:15,497 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:52:15,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:15,497 INFO L85 PathProgramCache]: Analyzing trace with hash -922201066, now seen corresponding path program 107 times [2022-11-18 20:52:15,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:15,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715193381] [2022-11-18 20:52:15,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:15,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:16,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:16,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715193381] [2022-11-18 20:52:16,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715193381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:16,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:16,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:52:16,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922613035] [2022-11-18 20:52:16,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:16,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:52:16,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:52:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:52:16,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:52:16,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 549 transitions, 8980 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:16,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:16,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:52:16,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:17,947 INFO L130 PetriNetUnfolder]: 374/1205 cut-off events. [2022-11-18 20:52:17,947 INFO L131 PetriNetUnfolder]: For 23855/23855 co-relation queries the response was YES. [2022-11-18 20:52:17,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10212 conditions, 1205 events. 374/1205 cut-off events. For 23855/23855 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7741 event pairs, 51 based on Foata normal form. 1/1204 useless extension candidates. Maximal degree in co-relation 10015. Up to 795 conditions per place. [2022-11-18 20:52:17,971 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 394 selfloop transitions, 126 changer transitions 26/585 dead transitions. [2022-11-18 20:52:17,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 585 transitions, 10515 flow [2022-11-18 20:52:17,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:52:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:52:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1801 transitions. [2022-11-18 20:52:17,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635168961201502 [2022-11-18 20:52:17,974 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1801 transitions. [2022-11-18 20:52:17,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1801 transitions. [2022-11-18 20:52:17,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:17,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1801 transitions. [2022-11-18 20:52:17,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.970588235294116) internal successors, (1801), 34 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:17,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:17,977 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:17,977 INFO L175 Difference]: Start difference. First operand has 555 places, 549 transitions, 8980 flow. Second operand 34 states and 1801 transitions. [2022-11-18 20:52:17,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 585 transitions, 10515 flow [2022-11-18 20:52:18,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 585 transitions, 9960 flow, removed 70 selfloop flow, removed 45 redundant places. [2022-11-18 20:52:18,569 INFO L231 Difference]: Finished difference. Result has 512 places, 543 transitions, 8651 flow [2022-11-18 20:52:18,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8473, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8651, PETRI_PLACES=512, PETRI_TRANSITIONS=543} [2022-11-18 20:52:18,570 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 424 predicate places. [2022-11-18 20:52:18,570 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 543 transitions, 8651 flow [2022-11-18 20:52:18,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:18,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:18,571 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:18,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-11-18 20:52:18,571 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:52:18,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:18,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1691880736, now seen corresponding path program 108 times [2022-11-18 20:52:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED. [2022-11-18 20:53:01,887 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:01,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 342 transitions, 3914 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:01,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:01,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:01,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:03,665 INFO L130 PetriNetUnfolder]: 288/861 cut-off events. [2022-11-18 20:53:03,665 INFO L131 PetriNetUnfolder]: For 9400/9400 co-relation queries the response was YES. [2022-11-18 20:53:03,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5896 conditions, 861 events. 288/861 cut-off events. For 9400/9400 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4549 event pairs, 58 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 5765. Up to 518 conditions per place. [2022-11-18 20:53:03,680 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 175 selfloop transitions, 137 changer transitions 23/374 dead transitions. [2022-11-18 20:53:03,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 374 transitions, 4911 flow [2022-11-18 20:53:03,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:53:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-18 20:53:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2146 transitions. [2022-11-18 20:53:03,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5568240788790867 [2022-11-18 20:53:03,683 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2146 transitions. [2022-11-18 20:53:03,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2146 transitions. [2022-11-18 20:53:03,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:03,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2146 transitions. [2022-11-18 20:53:03,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.34146341463415) internal successors, (2146), 41 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:03,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:03,688 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:03,688 INFO L175 Difference]: Start difference. First operand has 396 places, 342 transitions, 3914 flow. Second operand 41 states and 2146 transitions. [2022-11-18 20:53:03,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 374 transitions, 4911 flow [2022-11-18 20:53:03,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 374 transitions, 4609 flow, removed 37 selfloop flow, removed 34 redundant places. [2022-11-18 20:53:03,857 INFO L231 Difference]: Finished difference. Result has 380 places, 341 transitions, 3998 flow [2022-11-18 20:53:03,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3998, PETRI_PLACES=380, PETRI_TRANSITIONS=341} [2022-11-18 20:53:03,858 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 292 predicate places. [2022-11-18 20:53:03,858 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 341 transitions, 3998 flow [2022-11-18 20:53:03,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:03,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:03,858 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:03,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-11-18 20:53:03,859 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1069779538, now seen corresponding path program 124 times [2022-11-18 20:53:03,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:03,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041403421] [2022-11-18 20:53:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:03,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:04,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:04,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041403421] [2022-11-18 20:53:04,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041403421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:04,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:04,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:53:04,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028625244] [2022-11-18 20:53:04,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:04,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:53:04,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:04,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:53:04,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:53:04,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:04,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 341 transitions, 3998 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:04,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:04,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:04,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:05,993 INFO L130 PetriNetUnfolder]: 281/844 cut-off events. [2022-11-18 20:53:05,993 INFO L131 PetriNetUnfolder]: For 7982/7982 co-relation queries the response was YES. [2022-11-18 20:53:06,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5693 conditions, 844 events. 281/844 cut-off events. For 7982/7982 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4452 event pairs, 49 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 5569. Up to 582 conditions per place. [2022-11-18 20:53:06,004 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 234 selfloop transitions, 77 changer transitions 16/366 dead transitions. [2022-11-18 20:53:06,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 366 transitions, 4866 flow [2022-11-18 20:53:06,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:53:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:53:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1734 transitions. [2022-11-18 20:53:06,006 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5589941972920697 [2022-11-18 20:53:06,006 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1734 transitions. [2022-11-18 20:53:06,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1734 transitions. [2022-11-18 20:53:06,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:06,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1734 transitions. [2022-11-18 20:53:06,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.54545454545455) internal successors, (1734), 33 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:06,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:06,009 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:06,009 INFO L175 Difference]: Start difference. First operand has 380 places, 341 transitions, 3998 flow. Second operand 33 states and 1734 transitions. [2022-11-18 20:53:06,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 366 transitions, 4866 flow [2022-11-18 20:53:06,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 366 transitions, 4468 flow, removed 64 selfloop flow, removed 36 redundant places. [2022-11-18 20:53:06,086 INFO L231 Difference]: Finished difference. Result has 377 places, 340 transitions, 3786 flow [2022-11-18 20:53:06,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3786, PETRI_PLACES=377, PETRI_TRANSITIONS=340} [2022-11-18 20:53:06,086 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 289 predicate places. [2022-11-18 20:53:06,086 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 340 transitions, 3786 flow [2022-11-18 20:53:06,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:06,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:06,087 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:06,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-11-18 20:53:06,087 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:06,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:06,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1835452708, now seen corresponding path program 125 times [2022-11-18 20:53:06,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:06,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087343864] [2022-11-18 20:53:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:06,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:06,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:06,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087343864] [2022-11-18 20:53:06,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087343864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:06,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:06,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:53:06,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881727052] [2022-11-18 20:53:06,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:06,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:53:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:06,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:53:06,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:53:06,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:06,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 340 transitions, 3786 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:06,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:06,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:06,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:08,263 INFO L130 PetriNetUnfolder]: 286/870 cut-off events. [2022-11-18 20:53:08,263 INFO L131 PetriNetUnfolder]: For 8039/8039 co-relation queries the response was YES. [2022-11-18 20:53:08,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5715 conditions, 870 events. 286/870 cut-off events. For 8039/8039 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4690 event pairs, 58 based on Foata normal form. 1/869 useless extension candidates. Maximal degree in co-relation 5588. Up to 563 conditions per place. [2022-11-18 20:53:08,275 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 223 selfloop transitions, 107 changer transitions 17/386 dead transitions. [2022-11-18 20:53:08,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 386 transitions, 4935 flow [2022-11-18 20:53:08,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:53:08,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:53:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1943 transitions. [2022-11-18 20:53:08,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558654399079931 [2022-11-18 20:53:08,279 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1943 transitions. [2022-11-18 20:53:08,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1943 transitions. [2022-11-18 20:53:08,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:08,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1943 transitions. [2022-11-18 20:53:08,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.513513513513516) internal successors, (1943), 37 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:08,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:08,285 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:08,285 INFO L175 Difference]: Start difference. First operand has 377 places, 340 transitions, 3786 flow. Second operand 37 states and 1943 transitions. [2022-11-18 20:53:08,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 386 transitions, 4935 flow [2022-11-18 20:53:08,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 386 transitions, 4730 flow, removed 24 selfloop flow, removed 32 redundant places. [2022-11-18 20:53:08,401 INFO L231 Difference]: Finished difference. Result has 386 places, 356 transitions, 4125 flow [2022-11-18 20:53:08,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4125, PETRI_PLACES=386, PETRI_TRANSITIONS=356} [2022-11-18 20:53:08,402 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 298 predicate places. [2022-11-18 20:53:08,402 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 356 transitions, 4125 flow [2022-11-18 20:53:08,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:08,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:08,403 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:08,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-11-18 20:53:08,403 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:08,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1567221218, now seen corresponding path program 126 times [2022-11-18 20:53:08,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:08,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008819724] [2022-11-18 20:53:08,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:08,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:08,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:08,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008819724] [2022-11-18 20:53:08,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008819724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:08,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:08,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:53:08,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537162214] [2022-11-18 20:53:08,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:08,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:53:08,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:08,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:53:08,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:53:08,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:08,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 356 transitions, 4125 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:08,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:08,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:08,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:10,845 INFO L130 PetriNetUnfolder]: 283/877 cut-off events. [2022-11-18 20:53:10,845 INFO L131 PetriNetUnfolder]: For 8094/8094 co-relation queries the response was YES. [2022-11-18 20:53:10,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5791 conditions, 877 events. 283/877 cut-off events. For 8094/8094 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4769 event pairs, 59 based on Foata normal form. 1/875 useless extension candidates. Maximal degree in co-relation 5660. Up to 500 conditions per place. [2022-11-18 20:53:10,857 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 177 selfloop transitions, 99 changer transitions 67/382 dead transitions. [2022-11-18 20:53:10,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 382 transitions, 5028 flow [2022-11-18 20:53:10,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:53:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-18 20:53:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2142 transitions. [2022-11-18 20:53:10,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5557861961598339 [2022-11-18 20:53:10,860 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2142 transitions. [2022-11-18 20:53:10,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2142 transitions. [2022-11-18 20:53:10,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:10,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2142 transitions. [2022-11-18 20:53:10,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.24390243902439) internal successors, (2142), 41 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:10,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:10,864 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:10,864 INFO L175 Difference]: Start difference. First operand has 386 places, 356 transitions, 4125 flow. Second operand 41 states and 2142 transitions. [2022-11-18 20:53:10,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 382 transitions, 5028 flow [2022-11-18 20:53:10,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 382 transitions, 4835 flow, removed 39 selfloop flow, removed 26 redundant places. [2022-11-18 20:53:10,945 INFO L231 Difference]: Finished difference. Result has 401 places, 305 transitions, 3436 flow [2022-11-18 20:53:10,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3436, PETRI_PLACES=401, PETRI_TRANSITIONS=305} [2022-11-18 20:53:10,946 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 313 predicate places. [2022-11-18 20:53:10,946 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 305 transitions, 3436 flow [2022-11-18 20:53:10,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:10,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:10,947 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:10,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-11-18 20:53:10,947 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:10,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:10,947 INFO L85 PathProgramCache]: Analyzing trace with hash 555859176, now seen corresponding path program 127 times [2022-11-18 20:53:10,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:10,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506586879] [2022-11-18 20:53:10,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:10,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:11,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:11,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506586879] [2022-11-18 20:53:11,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506586879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:11,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:11,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:53:11,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288199147] [2022-11-18 20:53:11,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:11,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:53:11,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:11,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:53:11,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:53:11,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:11,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 305 transitions, 3436 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:11,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:11,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:11,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:13,188 INFO L130 PetriNetUnfolder]: 261/813 cut-off events. [2022-11-18 20:53:13,188 INFO L131 PetriNetUnfolder]: For 8703/8703 co-relation queries the response was YES. [2022-11-18 20:53:13,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5402 conditions, 813 events. 261/813 cut-off events. For 8703/8703 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4297 event pairs, 44 based on Foata normal form. 1/811 useless extension candidates. Maximal degree in co-relation 5268. Up to 492 conditions per place. [2022-11-18 20:53:13,205 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 167 selfloop transitions, 92 changer transitions 41/339 dead transitions. [2022-11-18 20:53:13,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 339 transitions, 4397 flow [2022-11-18 20:53:13,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:53:13,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 20:53:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2045 transitions. [2022-11-18 20:53:13,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5578286961265685 [2022-11-18 20:53:13,208 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2045 transitions. [2022-11-18 20:53:13,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2045 transitions. [2022-11-18 20:53:13,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:13,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2045 transitions. [2022-11-18 20:53:13,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.43589743589744) internal successors, (2045), 39 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:13,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:13,213 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:13,213 INFO L175 Difference]: Start difference. First operand has 401 places, 305 transitions, 3436 flow. Second operand 39 states and 2045 transitions. [2022-11-18 20:53:13,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 339 transitions, 4397 flow [2022-11-18 20:53:13,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 339 transitions, 3963 flow, removed 59 selfloop flow, removed 52 redundant places. [2022-11-18 20:53:13,320 INFO L231 Difference]: Finished difference. Result has 378 places, 288 transitions, 3098 flow [2022-11-18 20:53:13,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3098, PETRI_PLACES=378, PETRI_TRANSITIONS=288} [2022-11-18 20:53:13,320 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 290 predicate places. [2022-11-18 20:53:13,320 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 288 transitions, 3098 flow [2022-11-18 20:53:13,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:13,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:13,321 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:13,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-11-18 20:53:13,321 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:13,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:13,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1560481334, now seen corresponding path program 128 times [2022-11-18 20:53:13,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:13,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558455692] [2022-11-18 20:53:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:13,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:13,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:13,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:13,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558455692] [2022-11-18 20:53:13,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558455692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:13,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:13,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:53:13,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711939321] [2022-11-18 20:53:13,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:13,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:53:13,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:13,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:53:13,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:53:13,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:13,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 288 transitions, 3098 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:13,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:13,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:13,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:15,643 INFO L130 PetriNetUnfolder]: 250/761 cut-off events. [2022-11-18 20:53:15,643 INFO L131 PetriNetUnfolder]: For 7767/7767 co-relation queries the response was YES. [2022-11-18 20:53:15,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5036 conditions, 761 events. 250/761 cut-off events. For 7767/7767 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3868 event pairs, 49 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 4909. Up to 486 conditions per place. [2022-11-18 20:53:15,655 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 160 selfloop transitions, 99 changer transitions 15/313 dead transitions. [2022-11-18 20:53:15,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 313 transitions, 3913 flow [2022-11-18 20:53:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:53:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:53:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2092 transitions. [2022-11-18 20:53:15,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5563829787234043 [2022-11-18 20:53:15,658 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2092 transitions. [2022-11-18 20:53:15,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2092 transitions. [2022-11-18 20:53:15,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:15,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2092 transitions. [2022-11-18 20:53:15,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 52.3) internal successors, (2092), 40 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:15,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:15,663 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:15,663 INFO L175 Difference]: Start difference. First operand has 378 places, 288 transitions, 3098 flow. Second operand 40 states and 2092 transitions. [2022-11-18 20:53:15,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 313 transitions, 3913 flow [2022-11-18 20:53:15,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 313 transitions, 3609 flow, removed 77 selfloop flow, removed 35 redundant places. [2022-11-18 20:53:15,721 INFO L231 Difference]: Finished difference. Result has 382 places, 288 transitions, 3102 flow [2022-11-18 20:53:15,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3102, PETRI_PLACES=382, PETRI_TRANSITIONS=288} [2022-11-18 20:53:15,721 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 294 predicate places. [2022-11-18 20:53:15,721 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 288 transitions, 3102 flow [2022-11-18 20:53:15,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:15,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:15,722 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:15,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-11-18 20:53:15,722 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:15,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1865751286, now seen corresponding path program 129 times [2022-11-18 20:53:15,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:15,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470919834] [2022-11-18 20:53:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:15,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:16,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:16,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470919834] [2022-11-18 20:53:16,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470919834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:16,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:16,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:53:16,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764766591] [2022-11-18 20:53:16,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:16,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:53:16,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:53:16,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:53:16,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:16,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 288 transitions, 3102 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:16,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:16,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:16,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:17,584 INFO L130 PetriNetUnfolder]: 248/757 cut-off events. [2022-11-18 20:53:17,585 INFO L131 PetriNetUnfolder]: For 7445/7445 co-relation queries the response was YES. [2022-11-18 20:53:17,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4980 conditions, 757 events. 248/757 cut-off events. For 7445/7445 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3859 event pairs, 51 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 4852. Up to 506 conditions per place. [2022-11-18 20:53:17,594 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 180 selfloop transitions, 67 changer transitions 22/308 dead transitions. [2022-11-18 20:53:17,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 308 transitions, 3734 flow [2022-11-18 20:53:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:53:17,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:53:17,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1679 transitions. [2022-11-18 20:53:17,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5581781914893617 [2022-11-18 20:53:17,596 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1679 transitions. [2022-11-18 20:53:17,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1679 transitions. [2022-11-18 20:53:17,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:17,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1679 transitions. [2022-11-18 20:53:17,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.46875) internal successors, (1679), 32 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:17,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:17,599 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:17,599 INFO L175 Difference]: Start difference. First operand has 382 places, 288 transitions, 3102 flow. Second operand 32 states and 1679 transitions. [2022-11-18 20:53:17,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 308 transitions, 3734 flow [2022-11-18 20:53:17,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 308 transitions, 3433 flow, removed 53 selfloop flow, removed 38 redundant places. [2022-11-18 20:53:17,659 INFO L231 Difference]: Finished difference. Result has 375 places, 277 transitions, 2826 flow [2022-11-18 20:53:17,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2826, PETRI_PLACES=375, PETRI_TRANSITIONS=277} [2022-11-18 20:53:17,660 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 287 predicate places. [2022-11-18 20:53:17,660 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 277 transitions, 2826 flow [2022-11-18 20:53:17,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:17,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:17,660 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:17,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-11-18 20:53:17,660 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:17,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:17,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1223279382, now seen corresponding path program 130 times [2022-11-18 20:53:17,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:17,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866742447] [2022-11-18 20:53:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:17,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:18,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:18,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866742447] [2022-11-18 20:53:18,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866742447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:18,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:18,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:53:18,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316183523] [2022-11-18 20:53:18,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:18,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:53:18,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:18,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:53:18,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:53:18,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:18,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 277 transitions, 2826 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:18,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:18,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:18,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:19,697 INFO L130 PetriNetUnfolder]: 244/742 cut-off events. [2022-11-18 20:53:19,698 INFO L131 PetriNetUnfolder]: For 6788/6788 co-relation queries the response was YES. [2022-11-18 20:53:19,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4766 conditions, 742 events. 244/742 cut-off events. For 6788/6788 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3709 event pairs, 57 based on Foata normal form. 1/742 useless extension candidates. Maximal degree in co-relation 4638. Up to 501 conditions per place. [2022-11-18 20:53:19,706 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 173 selfloop transitions, 58 changer transitions 26/296 dead transitions. [2022-11-18 20:53:19,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 296 transitions, 3422 flow [2022-11-18 20:53:19,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:53:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:53:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1626 transitions. [2022-11-18 20:53:19,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5579958819492107 [2022-11-18 20:53:19,708 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1626 transitions. [2022-11-18 20:53:19,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1626 transitions. [2022-11-18 20:53:19,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:19,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1626 transitions. [2022-11-18 20:53:19,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.45161290322581) internal successors, (1626), 31 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:19,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:19,711 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:19,711 INFO L175 Difference]: Start difference. First operand has 375 places, 277 transitions, 2826 flow. Second operand 31 states and 1626 transitions. [2022-11-18 20:53:19,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 296 transitions, 3422 flow [2022-11-18 20:53:19,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 296 transitions, 3175 flow, removed 15 selfloop flow, removed 42 redundant places. [2022-11-18 20:53:19,767 INFO L231 Difference]: Finished difference. Result has 355 places, 261 transitions, 2558 flow [2022-11-18 20:53:19,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2558, PETRI_PLACES=355, PETRI_TRANSITIONS=261} [2022-11-18 20:53:19,768 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 267 predicate places. [2022-11-18 20:53:19,768 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 261 transitions, 2558 flow [2022-11-18 20:53:19,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:19,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:19,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:19,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-11-18 20:53:19,769 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:19,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:19,770 INFO L85 PathProgramCache]: Analyzing trace with hash 197787322, now seen corresponding path program 131 times [2022-11-18 20:53:19,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:19,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500698328] [2022-11-18 20:53:19,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:19,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:20,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:20,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:20,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500698328] [2022-11-18 20:53:20,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500698328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:20,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:20,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:53:20,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442852011] [2022-11-18 20:53:20,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:20,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:53:20,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:20,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:53:20,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:53:20,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:20,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 261 transitions, 2558 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:20,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:20,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:20,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:21,809 INFO L130 PetriNetUnfolder]: 238/710 cut-off events. [2022-11-18 20:53:21,809 INFO L131 PetriNetUnfolder]: For 6439/6439 co-relation queries the response was YES. [2022-11-18 20:53:21,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 710 events. 238/710 cut-off events. For 6439/6439 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3475 event pairs, 57 based on Foata normal form. 1/710 useless extension candidates. Maximal degree in co-relation 4424. Up to 466 conditions per place. [2022-11-18 20:53:21,816 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 144 selfloop transitions, 77 changer transitions 19/279 dead transitions. [2022-11-18 20:53:21,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 279 transitions, 3119 flow [2022-11-18 20:53:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:53:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:53:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1783 transitions. [2022-11-18 20:53:21,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5578848560700876 [2022-11-18 20:53:21,818 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1783 transitions. [2022-11-18 20:53:21,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1783 transitions. [2022-11-18 20:53:21,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:21,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1783 transitions. [2022-11-18 20:53:21,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.44117647058823) internal successors, (1783), 34 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:21,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:21,821 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:21,821 INFO L175 Difference]: Start difference. First operand has 355 places, 261 transitions, 2558 flow. Second operand 34 states and 1783 transitions. [2022-11-18 20:53:21,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 279 transitions, 3119 flow [2022-11-18 20:53:21,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 279 transitions, 2884 flow, removed 15 selfloop flow, removed 34 redundant places. [2022-11-18 20:53:21,875 INFO L231 Difference]: Finished difference. Result has 339 places, 250 transitions, 2411 flow [2022-11-18 20:53:21,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2411, PETRI_PLACES=339, PETRI_TRANSITIONS=250} [2022-11-18 20:53:21,876 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 251 predicate places. [2022-11-18 20:53:21,876 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 250 transitions, 2411 flow [2022-11-18 20:53:21,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:21,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:21,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:21,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-11-18 20:53:21,876 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:21,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:21,876 INFO L85 PathProgramCache]: Analyzing trace with hash -989232080, now seen corresponding path program 132 times [2022-11-18 20:53:21,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:21,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284923684] [2022-11-18 20:53:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:21,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:22,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:22,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284923684] [2022-11-18 20:53:22,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284923684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:22,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:22,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:53:22,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476816213] [2022-11-18 20:53:22,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:22,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:53:22,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:22,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:53:22,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:53:22,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:22,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 250 transitions, 2411 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:22,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:22,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:22,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:23,775 INFO L130 PetriNetUnfolder]: 233/692 cut-off events. [2022-11-18 20:53:23,775 INFO L131 PetriNetUnfolder]: For 5696/5696 co-relation queries the response was YES. [2022-11-18 20:53:23,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 692 events. 233/692 cut-off events. For 5696/5696 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3319 event pairs, 60 based on Foata normal form. 1/691 useless extension candidates. Maximal degree in co-relation 4233. Up to 469 conditions per place. [2022-11-18 20:53:23,782 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 144 selfloop transitions, 65 changer transitions 19/267 dead transitions. [2022-11-18 20:53:23,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 267 transitions, 2945 flow [2022-11-18 20:53:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:53:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:53:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1774 transitions. [2022-11-18 20:53:23,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5550688360450563 [2022-11-18 20:53:23,784 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1774 transitions. [2022-11-18 20:53:23,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1774 transitions. [2022-11-18 20:53:23,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:23,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1774 transitions. [2022-11-18 20:53:23,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.1764705882353) internal successors, (1774), 34 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:23,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:23,788 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:23,788 INFO L175 Difference]: Start difference. First operand has 339 places, 250 transitions, 2411 flow. Second operand 34 states and 1774 transitions. [2022-11-18 20:53:23,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 267 transitions, 2945 flow [2022-11-18 20:53:23,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 267 transitions, 2703 flow, removed 13 selfloop flow, removed 37 redundant places. [2022-11-18 20:53:23,831 INFO L231 Difference]: Finished difference. Result has 326 places, 239 transitions, 2238 flow [2022-11-18 20:53:23,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2238, PETRI_PLACES=326, PETRI_TRANSITIONS=239} [2022-11-18 20:53:23,831 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 238 predicate places. [2022-11-18 20:53:23,831 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 239 transitions, 2238 flow [2022-11-18 20:53:23,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:23,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:23,832 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:23,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-11-18 20:53:23,832 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:23,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:23,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1383495034, now seen corresponding path program 133 times [2022-11-18 20:53:23,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:23,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503861769] [2022-11-18 20:53:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:23,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:24,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503861769] [2022-11-18 20:53:24,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503861769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:24,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:24,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:53:24,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25605101] [2022-11-18 20:53:24,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:24,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:53:24,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:24,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:53:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:53:24,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:24,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 239 transitions, 2238 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:24,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:24,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:24,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:25,908 INFO L130 PetriNetUnfolder]: 230/676 cut-off events. [2022-11-18 20:53:25,909 INFO L131 PetriNetUnfolder]: For 5231/5231 co-relation queries the response was YES. [2022-11-18 20:53:25,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4189 conditions, 676 events. 230/676 cut-off events. For 5231/5231 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3210 event pairs, 60 based on Foata normal form. 1/675 useless extension candidates. Maximal degree in co-relation 4081. Up to 450 conditions per place. [2022-11-18 20:53:25,919 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 131 selfloop transitions, 61 changer transitions 27/258 dead transitions. [2022-11-18 20:53:25,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 258 transitions, 2756 flow [2022-11-18 20:53:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:53:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:53:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1781 transitions. [2022-11-18 20:53:25,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5572590738423029 [2022-11-18 20:53:25,922 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1781 transitions. [2022-11-18 20:53:25,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1781 transitions. [2022-11-18 20:53:25,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:25,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1781 transitions. [2022-11-18 20:53:25,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.38235294117647) internal successors, (1781), 34 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:25,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:25,925 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:25,925 INFO L175 Difference]: Start difference. First operand has 326 places, 239 transitions, 2238 flow. Second operand 34 states and 1781 transitions. [2022-11-18 20:53:25,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 258 transitions, 2756 flow [2022-11-18 20:53:25,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 258 transitions, 2548 flow, removed 11 selfloop flow, removed 39 redundant places. [2022-11-18 20:53:25,963 INFO L231 Difference]: Finished difference. Result has 312 places, 222 transitions, 2037 flow [2022-11-18 20:53:25,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2037, PETRI_PLACES=312, PETRI_TRANSITIONS=222} [2022-11-18 20:53:25,963 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 224 predicate places. [2022-11-18 20:53:25,963 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 222 transitions, 2037 flow [2022-11-18 20:53:25,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:25,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:25,964 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:25,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-11-18 20:53:25,964 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash -581400274, now seen corresponding path program 134 times [2022-11-18 20:53:25,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:25,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247992083] [2022-11-18 20:53:25,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:25,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:26,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:26,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247992083] [2022-11-18 20:53:26,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247992083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:26,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:26,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:53:26,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133718184] [2022-11-18 20:53:26,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:26,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:53:26,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:26,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:53:26,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:53:26,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:26,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 222 transitions, 2037 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:26,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:26,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:26,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:28,050 INFO L130 PetriNetUnfolder]: 223/655 cut-off events. [2022-11-18 20:53:28,050 INFO L131 PetriNetUnfolder]: For 4651/4651 co-relation queries the response was YES. [2022-11-18 20:53:28,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3981 conditions, 655 events. 223/655 cut-off events. For 4651/4651 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3050 event pairs, 58 based on Foata normal form. 1/654 useless extension candidates. Maximal degree in co-relation 3878. Up to 447 conditions per place. [2022-11-18 20:53:28,056 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 128 selfloop transitions, 55 changer transitions 19/241 dead transitions. [2022-11-18 20:53:28,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 241 transitions, 2521 flow [2022-11-18 20:53:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:53:28,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:53:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1668 transitions. [2022-11-18 20:53:28,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5545212765957447 [2022-11-18 20:53:28,058 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1668 transitions. [2022-11-18 20:53:28,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1668 transitions. [2022-11-18 20:53:28,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:28,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1668 transitions. [2022-11-18 20:53:28,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.125) internal successors, (1668), 32 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:28,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:28,061 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:28,061 INFO L175 Difference]: Start difference. First operand has 312 places, 222 transitions, 2037 flow. Second operand 32 states and 1668 transitions. [2022-11-18 20:53:28,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 241 transitions, 2521 flow [2022-11-18 20:53:28,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 241 transitions, 2313 flow, removed 14 selfloop flow, removed 36 redundant places. [2022-11-18 20:53:28,111 INFO L231 Difference]: Finished difference. Result has 292 places, 213 transitions, 1895 flow [2022-11-18 20:53:28,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1895, PETRI_PLACES=292, PETRI_TRANSITIONS=213} [2022-11-18 20:53:28,111 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 204 predicate places. [2022-11-18 20:53:28,111 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 213 transitions, 1895 flow [2022-11-18 20:53:28,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:28,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:28,112 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:28,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-11-18 20:53:28,112 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:28,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:28,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1296539176, now seen corresponding path program 135 times [2022-11-18 20:53:28,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:28,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309206028] [2022-11-18 20:53:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:28,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:28,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:28,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309206028] [2022-11-18 20:53:28,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309206028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:28,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:28,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:53:28,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935053829] [2022-11-18 20:53:28,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:28,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:53:28,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:28,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:53:28,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:53:28,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:28,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 213 transitions, 1895 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:28,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:28,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:28,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:30,067 INFO L130 PetriNetUnfolder]: 221/639 cut-off events. [2022-11-18 20:53:30,067 INFO L131 PetriNetUnfolder]: For 4757/4757 co-relation queries the response was YES. [2022-11-18 20:53:30,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 639 events. 221/639 cut-off events. For 4757/4757 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2912 event pairs, 43 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 3761. Up to 433 conditions per place. [2022-11-18 20:53:30,073 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 116 selfloop transitions, 46 changer transitions 31/232 dead transitions. [2022-11-18 20:53:30,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 232 transitions, 2361 flow [2022-11-18 20:53:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:53:30,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:53:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1670 transitions. [2022-11-18 20:53:30,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.555186170212766 [2022-11-18 20:53:30,075 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1670 transitions. [2022-11-18 20:53:30,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1670 transitions. [2022-11-18 20:53:30,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:30,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1670 transitions. [2022-11-18 20:53:30,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.1875) internal successors, (1670), 32 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:30,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:30,078 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:30,078 INFO L175 Difference]: Start difference. First operand has 292 places, 213 transitions, 1895 flow. Second operand 32 states and 1670 transitions. [2022-11-18 20:53:30,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 232 transitions, 2361 flow [2022-11-18 20:53:30,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 232 transitions, 2157 flow, removed 12 selfloop flow, removed 29 redundant places. [2022-11-18 20:53:30,107 INFO L231 Difference]: Finished difference. Result has 280 places, 193 transitions, 1667 flow [2022-11-18 20:53:30,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1667, PETRI_PLACES=280, PETRI_TRANSITIONS=193} [2022-11-18 20:53:30,107 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 192 predicate places. [2022-11-18 20:53:30,107 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 193 transitions, 1667 flow [2022-11-18 20:53:30,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:30,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:30,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:30,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-11-18 20:53:30,108 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:30,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash 506806154, now seen corresponding path program 136 times [2022-11-18 20:53:30,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:30,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834088189] [2022-11-18 20:53:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:30,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:30,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:30,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834088189] [2022-11-18 20:53:30,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834088189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:30,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:30,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:53:30,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659343541] [2022-11-18 20:53:30,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:30,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:53:30,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:53:30,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:53:30,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:30,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 193 transitions, 1667 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:30,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:30,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:30,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:32,050 INFO L130 PetriNetUnfolder]: 243/678 cut-off events. [2022-11-18 20:53:32,050 INFO L131 PetriNetUnfolder]: For 4913/4913 co-relation queries the response was YES. [2022-11-18 20:53:32,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 678 events. 243/678 cut-off events. For 4913/4913 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3179 event pairs, 56 based on Foata normal form. 1/677 useless extension candidates. Maximal degree in co-relation 3992. Up to 408 conditions per place. [2022-11-18 20:53:32,056 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 117 selfloop transitions, 66 changer transitions 35/257 dead transitions. [2022-11-18 20:53:32,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 257 transitions, 2836 flow [2022-11-18 20:53:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:53:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:53:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-18 20:53:32,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-18 20:53:32,058 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-18 20:53:32,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-18 20:53:32,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:32,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-18 20:53:32,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:32,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:32,061 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:32,061 INFO L175 Difference]: Start difference. First operand has 280 places, 193 transitions, 1667 flow. Second operand 34 states and 1812 transitions. [2022-11-18 20:53:32,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 257 transitions, 2836 flow [2022-11-18 20:53:32,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 257 transitions, 2453 flow, removed 70 selfloop flow, removed 28 redundant places. [2022-11-18 20:53:32,088 INFO L231 Difference]: Finished difference. Result has 264 places, 203 transitions, 1725 flow [2022-11-18 20:53:32,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1725, PETRI_PLACES=264, PETRI_TRANSITIONS=203} [2022-11-18 20:53:32,089 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 176 predicate places. [2022-11-18 20:53:32,089 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 203 transitions, 1725 flow [2022-11-18 20:53:32,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:32,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:32,089 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:32,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-11-18 20:53:32,090 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:32,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash -591456042, now seen corresponding path program 137 times [2022-11-18 20:53:32,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:32,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923725567] [2022-11-18 20:53:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:32,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:32,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923725567] [2022-11-18 20:53:32,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923725567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:32,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:32,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:53:32,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330022771] [2022-11-18 20:53:32,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:32,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:53:32,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:32,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:53:32,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:53:32,542 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:32,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 203 transitions, 1725 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:32,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:32,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:32,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:33,957 INFO L130 PetriNetUnfolder]: 289/796 cut-off events. [2022-11-18 20:53:33,957 INFO L131 PetriNetUnfolder]: For 7118/7118 co-relation queries the response was YES. [2022-11-18 20:53:33,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 796 events. 289/796 cut-off events. For 7118/7118 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3866 event pairs, 57 based on Foata normal form. 1/795 useless extension candidates. Maximal degree in co-relation 4796. Up to 473 conditions per place. [2022-11-18 20:53:33,966 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 150 selfloop transitions, 99 changer transitions 21/309 dead transitions. [2022-11-18 20:53:33,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 309 transitions, 3748 flow [2022-11-18 20:53:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:53:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:53:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1873 transitions. [2022-11-18 20:53:33,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693009118541034 [2022-11-18 20:53:33,970 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1873 transitions. [2022-11-18 20:53:33,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1873 transitions. [2022-11-18 20:53:33,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:33,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1873 transitions. [2022-11-18 20:53:33,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.51428571428571) internal successors, (1873), 35 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,973 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,973 INFO L175 Difference]: Start difference. First operand has 264 places, 203 transitions, 1725 flow. Second operand 35 states and 1873 transitions. [2022-11-18 20:53:33,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 309 transitions, 3748 flow [2022-11-18 20:53:34,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 309 transitions, 3334 flow, removed 154 selfloop flow, removed 28 redundant places. [2022-11-18 20:53:34,003 INFO L231 Difference]: Finished difference. Result has 273 places, 257 transitions, 2635 flow [2022-11-18 20:53:34,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2635, PETRI_PLACES=273, PETRI_TRANSITIONS=257} [2022-11-18 20:53:34,004 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-18 20:53:34,004 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 257 transitions, 2635 flow [2022-11-18 20:53:34,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:34,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:34,004 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:34,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-11-18 20:53:34,004 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:34,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:34,005 INFO L85 PathProgramCache]: Analyzing trace with hash 38226082, now seen corresponding path program 138 times [2022-11-18 20:53:34,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:34,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86224245] [2022-11-18 20:53:34,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:34,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:34,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:34,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86224245] [2022-11-18 20:53:34,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86224245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:34,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:34,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:53:34,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984289492] [2022-11-18 20:53:34,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:34,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:53:34,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:34,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:53:34,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:53:34,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:34,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 257 transitions, 2635 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:34,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:34,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:34,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:36,205 INFO L130 PetriNetUnfolder]: 339/912 cut-off events. [2022-11-18 20:53:36,205 INFO L131 PetriNetUnfolder]: For 10717/10717 co-relation queries the response was YES. [2022-11-18 20:53:36,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 912 events. 339/912 cut-off events. For 10717/10717 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4646 event pairs, 54 based on Foata normal form. 1/911 useless extension candidates. Maximal degree in co-relation 6053. Up to 494 conditions per place. [2022-11-18 20:53:36,215 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 145 selfloop transitions, 157 changer transitions 21/362 dead transitions. [2022-11-18 20:53:36,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 362 transitions, 4767 flow [2022-11-18 20:53:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:53:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:53:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2125 transitions. [2022-11-18 20:53:36,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5651595744680851 [2022-11-18 20:53:36,217 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2125 transitions. [2022-11-18 20:53:36,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2125 transitions. [2022-11-18 20:53:36,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:36,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2125 transitions. [2022-11-18 20:53:36,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.125) internal successors, (2125), 40 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,221 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,221 INFO L175 Difference]: Start difference. First operand has 273 places, 257 transitions, 2635 flow. Second operand 40 states and 2125 transitions. [2022-11-18 20:53:36,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 362 transitions, 4767 flow [2022-11-18 20:53:36,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 362 transitions, 4299 flow, removed 215 selfloop flow, removed 10 redundant places. [2022-11-18 20:53:36,265 INFO L231 Difference]: Finished difference. Result has 310 places, 310 transitions, 3580 flow [2022-11-18 20:53:36,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3580, PETRI_PLACES=310, PETRI_TRANSITIONS=310} [2022-11-18 20:53:36,266 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 222 predicate places. [2022-11-18 20:53:36,266 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 310 transitions, 3580 flow [2022-11-18 20:53:36,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:36,266 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:36,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-11-18 20:53:36,267 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:36,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:36,267 INFO L85 PathProgramCache]: Analyzing trace with hash -41106020, now seen corresponding path program 139 times [2022-11-18 20:53:36,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:36,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859169101] [2022-11-18 20:53:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:36,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:36,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:36,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:36,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859169101] [2022-11-18 20:53:36,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859169101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:36,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:36,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:53:36,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466378679] [2022-11-18 20:53:36,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:36,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:53:36,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:36,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:53:36,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:53:36,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:36,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 310 transitions, 3580 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:36,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:36,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:38,050 INFO L130 PetriNetUnfolder]: 348/946 cut-off events. [2022-11-18 20:53:38,050 INFO L131 PetriNetUnfolder]: For 14251/14251 co-relation queries the response was YES. [2022-11-18 20:53:38,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6906 conditions, 946 events. 348/946 cut-off events. For 14251/14251 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5036 event pairs, 75 based on Foata normal form. 1/945 useless extension candidates. Maximal degree in co-relation 6797. Up to 644 conditions per place. [2022-11-18 20:53:38,059 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 224 selfloop transitions, 73 changer transitions 35/371 dead transitions. [2022-11-18 20:53:38,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 371 transitions, 4956 flow [2022-11-18 20:53:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:53:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 20:53:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1558 transitions. [2022-11-18 20:53:38,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5715333822450477 [2022-11-18 20:53:38,061 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1558 transitions. [2022-11-18 20:53:38,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1558 transitions. [2022-11-18 20:53:38,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:38,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1558 transitions. [2022-11-18 20:53:38,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.724137931034484) internal successors, (1558), 29 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:38,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:38,064 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:38,064 INFO L175 Difference]: Start difference. First operand has 310 places, 310 transitions, 3580 flow. Second operand 29 states and 1558 transitions. [2022-11-18 20:53:38,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 371 transitions, 4956 flow [2022-11-18 20:53:38,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 371 transitions, 4412 flow, removed 241 selfloop flow, removed 15 redundant places. [2022-11-18 20:53:38,134 INFO L231 Difference]: Finished difference. Result has 330 places, 318 transitions, 3392 flow [2022-11-18 20:53:38,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3392, PETRI_PLACES=330, PETRI_TRANSITIONS=318} [2022-11-18 20:53:38,134 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 242 predicate places. [2022-11-18 20:53:38,134 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 318 transitions, 3392 flow [2022-11-18 20:53:38,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:38,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:38,135 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:38,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-11-18 20:53:38,135 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:38,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:38,135 INFO L85 PathProgramCache]: Analyzing trace with hash 704169166, now seen corresponding path program 140 times [2022-11-18 20:53:38,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:38,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226617744] [2022-11-18 20:53:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:38,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:38,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:38,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226617744] [2022-11-18 20:53:38,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226617744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:38,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:38,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:53:38,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299643713] [2022-11-18 20:53:38,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:38,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:53:38,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:38,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:53:38,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:53:38,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:38,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 318 transitions, 3392 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:38,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:38,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:38,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:40,079 INFO L130 PetriNetUnfolder]: 348/956 cut-off events. [2022-11-18 20:53:40,079 INFO L131 PetriNetUnfolder]: For 14783/14783 co-relation queries the response was YES. [2022-11-18 20:53:40,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 956 events. 348/956 cut-off events. For 14783/14783 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5179 event pairs, 74 based on Foata normal form. 1/955 useless extension candidates. Maximal degree in co-relation 6823. Up to 612 conditions per place. [2022-11-18 20:53:40,090 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 202 selfloop transitions, 105 changer transitions 35/381 dead transitions. [2022-11-18 20:53:40,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 381 transitions, 4899 flow [2022-11-18 20:53:40,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:53:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:53:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-18 20:53:40,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-18 20:53:40,093 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-18 20:53:40,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-18 20:53:40,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:40,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-18 20:53:40,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:40,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:40,096 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:40,096 INFO L175 Difference]: Start difference. First operand has 330 places, 318 transitions, 3392 flow. Second operand 34 states and 1812 transitions. [2022-11-18 20:53:40,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 381 transitions, 4899 flow [2022-11-18 20:53:40,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 381 transitions, 4604 flow, removed 100 selfloop flow, removed 26 redundant places. [2022-11-18 20:53:40,178 INFO L231 Difference]: Finished difference. Result has 341 places, 326 transitions, 3602 flow [2022-11-18 20:53:40,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3602, PETRI_PLACES=341, PETRI_TRANSITIONS=326} [2022-11-18 20:53:40,179 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 253 predicate places. [2022-11-18 20:53:40,179 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 326 transitions, 3602 flow [2022-11-18 20:53:40,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:40,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:40,179 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:40,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-11-18 20:53:40,179 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:40,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:40,180 INFO L85 PathProgramCache]: Analyzing trace with hash -513212898, now seen corresponding path program 141 times [2022-11-18 20:53:40,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:40,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200949421] [2022-11-18 20:53:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:40,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:40,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:40,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200949421] [2022-11-18 20:53:40,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200949421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:40,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:40,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:53:40,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520979445] [2022-11-18 20:53:40,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:40,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:53:40,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:40,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:53:40,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:53:40,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:40,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 326 transitions, 3602 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:40,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:40,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:40,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:42,135 INFO L130 PetriNetUnfolder]: 354/996 cut-off events. [2022-11-18 20:53:42,136 INFO L131 PetriNetUnfolder]: For 14120/14120 co-relation queries the response was YES. [2022-11-18 20:53:42,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 996 events. 354/996 cut-off events. For 14120/14120 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5600 event pairs, 65 based on Foata normal form. 1/995 useless extension candidates. Maximal degree in co-relation 6997. Up to 646 conditions per place. [2022-11-18 20:53:42,149 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 223 selfloop transitions, 98 changer transitions 35/395 dead transitions. [2022-11-18 20:53:42,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 395 transitions, 5258 flow [2022-11-18 20:53:42,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:53:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:53:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1756 transitions. [2022-11-18 20:53:42,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.56608639587363 [2022-11-18 20:53:42,151 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1756 transitions. [2022-11-18 20:53:42,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1756 transitions. [2022-11-18 20:53:42,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:42,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1756 transitions. [2022-11-18 20:53:42,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.21212121212121) internal successors, (1756), 33 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:42,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:42,155 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:42,156 INFO L175 Difference]: Start difference. First operand has 341 places, 326 transitions, 3602 flow. Second operand 33 states and 1756 transitions. [2022-11-18 20:53:42,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 395 transitions, 5258 flow [2022-11-18 20:53:42,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 395 transitions, 4907 flow, removed 122 selfloop flow, removed 29 redundant places. [2022-11-18 20:53:42,236 INFO L231 Difference]: Finished difference. Result has 348 places, 341 transitions, 3896 flow [2022-11-18 20:53:42,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3896, PETRI_PLACES=348, PETRI_TRANSITIONS=341} [2022-11-18 20:53:42,237 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 260 predicate places. [2022-11-18 20:53:42,237 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 341 transitions, 3896 flow [2022-11-18 20:53:42,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:42,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:42,238 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:42,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-11-18 20:53:42,238 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:42,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:42,239 INFO L85 PathProgramCache]: Analyzing trace with hash -654896460, now seen corresponding path program 142 times [2022-11-18 20:53:42,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:42,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763252206] [2022-11-18 20:53:42,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:42,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:42,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:42,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763252206] [2022-11-18 20:53:42,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763252206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:42,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:42,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:53:42,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929663628] [2022-11-18 20:53:42,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:42,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:53:42,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:53:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:53:42,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:42,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 341 transitions, 3896 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:42,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:42,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:42,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:44,568 INFO L130 PetriNetUnfolder]: 355/999 cut-off events. [2022-11-18 20:53:44,568 INFO L131 PetriNetUnfolder]: For 14015/14015 co-relation queries the response was YES. [2022-11-18 20:53:44,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7188 conditions, 999 events. 355/999 cut-off events. For 14015/14015 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5670 event pairs, 68 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 7062. Up to 647 conditions per place. [2022-11-18 20:53:44,581 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 222 selfloop transitions, 102 changer transitions 35/398 dead transitions. [2022-11-18 20:53:44,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 398 transitions, 5356 flow [2022-11-18 20:53:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:53:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:53:44,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-18 20:53:44,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-18 20:53:44,583 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-18 20:53:44,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-18 20:53:44,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:44,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-18 20:53:44,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:44,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:44,586 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:44,586 INFO L175 Difference]: Start difference. First operand has 348 places, 341 transitions, 3896 flow. Second operand 34 states and 1805 transitions. [2022-11-18 20:53:44,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 398 transitions, 5356 flow [2022-11-18 20:53:44,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 398 transitions, 5126 flow, removed 66 selfloop flow, removed 26 redundant places. [2022-11-18 20:53:44,661 INFO L231 Difference]: Finished difference. Result has 359 places, 344 transitions, 4068 flow [2022-11-18 20:53:44,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4068, PETRI_PLACES=359, PETRI_TRANSITIONS=344} [2022-11-18 20:53:44,662 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 271 predicate places. [2022-11-18 20:53:44,662 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 344 transitions, 4068 flow [2022-11-18 20:53:44,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:44,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:44,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:44,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-11-18 20:53:44,662 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:44,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:44,663 INFO L85 PathProgramCache]: Analyzing trace with hash -489428494, now seen corresponding path program 143 times [2022-11-18 20:53:44,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:44,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402173749] [2022-11-18 20:53:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:44,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:45,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:45,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402173749] [2022-11-18 20:53:45,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402173749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:45,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:45,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:53:45,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488316401] [2022-11-18 20:53:45,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:45,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:53:45,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:45,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:53:45,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:53:45,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:45,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 344 transitions, 4068 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:45,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:45,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:45,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:46,761 INFO L130 PetriNetUnfolder]: 362/986 cut-off events. [2022-11-18 20:53:46,762 INFO L131 PetriNetUnfolder]: For 14888/14888 co-relation queries the response was YES. [2022-11-18 20:53:46,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7466 conditions, 986 events. 362/986 cut-off events. For 14888/14888 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5491 event pairs, 57 based on Foata normal form. 1/983 useless extension candidates. Maximal degree in co-relation 7336. Up to 656 conditions per place. [2022-11-18 20:53:46,781 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 228 selfloop transitions, 114 changer transitions 33/414 dead transitions. [2022-11-18 20:53:46,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 414 transitions, 5805 flow [2022-11-18 20:53:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:53:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:53:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1959 transitions. [2022-11-18 20:53:46,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5632547441058079 [2022-11-18 20:53:46,783 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1959 transitions. [2022-11-18 20:53:46,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1959 transitions. [2022-11-18 20:53:46,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:46,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1959 transitions. [2022-11-18 20:53:46,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.945945945945944) internal successors, (1959), 37 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:46,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:46,787 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:46,787 INFO L175 Difference]: Start difference. First operand has 359 places, 344 transitions, 4068 flow. Second operand 37 states and 1959 transitions. [2022-11-18 20:53:46,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 414 transitions, 5805 flow [2022-11-18 20:53:46,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 414 transitions, 5529 flow, removed 65 selfloop flow, removed 31 redundant places. [2022-11-18 20:53:46,863 INFO L231 Difference]: Finished difference. Result has 369 places, 361 transitions, 4508 flow [2022-11-18 20:53:46,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4508, PETRI_PLACES=369, PETRI_TRANSITIONS=361} [2022-11-18 20:53:46,863 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 281 predicate places. [2022-11-18 20:53:46,863 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 361 transitions, 4508 flow [2022-11-18 20:53:46,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:46,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:46,863 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:46,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-11-18 20:53:46,864 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:46,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:46,864 INFO L85 PathProgramCache]: Analyzing trace with hash -691042608, now seen corresponding path program 144 times [2022-11-18 20:53:46,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:46,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506098476] [2022-11-18 20:53:46,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:46,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:47,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:47,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506098476] [2022-11-18 20:53:47,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506098476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:47,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:47,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:53:47,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377116274] [2022-11-18 20:53:47,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:47,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:53:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:53:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:53:47,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:47,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 361 transitions, 4508 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:47,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:47,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:47,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:48,848 INFO L130 PetriNetUnfolder]: 353/1010 cut-off events. [2022-11-18 20:53:48,849 INFO L131 PetriNetUnfolder]: For 14351/14351 co-relation queries the response was YES. [2022-11-18 20:53:48,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7486 conditions, 1010 events. 353/1010 cut-off events. For 14351/14351 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5753 event pairs, 67 based on Foata normal form. 1/1008 useless extension candidates. Maximal degree in co-relation 7353. Up to 648 conditions per place. [2022-11-18 20:53:48,861 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 226 selfloop transitions, 98 changer transitions 43/406 dead transitions. [2022-11-18 20:53:48,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 406 transitions, 5750 flow [2022-11-18 20:53:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:53:48,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:53:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-18 20:53:48,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-18 20:53:48,863 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-18 20:53:48,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-18 20:53:48,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:48,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-18 20:53:48,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:48,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:48,866 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:48,866 INFO L175 Difference]: Start difference. First operand has 369 places, 361 transitions, 4508 flow. Second operand 34 states and 1805 transitions. [2022-11-18 20:53:48,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 406 transitions, 5750 flow [2022-11-18 20:53:48,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 406 transitions, 5417 flow, removed 98 selfloop flow, removed 28 redundant places. [2022-11-18 20:53:48,948 INFO L231 Difference]: Finished difference. Result has 376 places, 345 transitions, 4276 flow [2022-11-18 20:53:48,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4211, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4276, PETRI_PLACES=376, PETRI_TRANSITIONS=345} [2022-11-18 20:53:48,949 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 288 predicate places. [2022-11-18 20:53:48,949 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 345 transitions, 4276 flow [2022-11-18 20:53:48,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:48,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:48,949 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:48,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-11-18 20:53:48,950 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:48,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:48,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2062737244, now seen corresponding path program 145 times [2022-11-18 20:53:48,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:48,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105187885] [2022-11-18 20:53:48,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:48,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:49,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:49,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105187885] [2022-11-18 20:53:49,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105187885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:49,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:49,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:53:49,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732831228] [2022-11-18 20:53:49,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:49,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:53:49,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:49,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:53:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:53:49,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:49,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 345 transitions, 4276 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:49,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:49,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:49,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:51,721 INFO L130 PetriNetUnfolder]: 421/1179 cut-off events. [2022-11-18 20:53:51,721 INFO L131 PetriNetUnfolder]: For 18745/18745 co-relation queries the response was YES. [2022-11-18 20:53:51,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9027 conditions, 1179 events. 421/1179 cut-off events. For 18745/18745 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 6975 event pairs, 66 based on Foata normal form. 1/1177 useless extension candidates. Maximal degree in co-relation 8891. Up to 667 conditions per place. [2022-11-18 20:53:51,736 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 241 selfloop transitions, 218 changer transitions 21/519 dead transitions. [2022-11-18 20:53:51,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 519 transitions, 7845 flow [2022-11-18 20:53:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:53:51,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-18 20:53:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2784 transitions. [2022-11-18 20:53:51,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5588117221999197 [2022-11-18 20:53:51,739 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2784 transitions. [2022-11-18 20:53:51,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2784 transitions. [2022-11-18 20:53:51,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:51,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2784 transitions. [2022-11-18 20:53:51,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 52.528301886792455) internal successors, (2784), 53 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:51,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 94.0) internal successors, (5076), 54 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:51,743 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 94.0) internal successors, (5076), 54 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:51,743 INFO L175 Difference]: Start difference. First operand has 376 places, 345 transitions, 4276 flow. Second operand 53 states and 2784 transitions. [2022-11-18 20:53:51,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 519 transitions, 7845 flow [2022-11-18 20:53:51,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 519 transitions, 7400 flow, removed 71 selfloop flow, removed 37 redundant places. [2022-11-18 20:53:51,846 INFO L231 Difference]: Finished difference. Result has 396 places, 471 transitions, 6615 flow [2022-11-18 20:53:51,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6615, PETRI_PLACES=396, PETRI_TRANSITIONS=471} [2022-11-18 20:53:51,847 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 308 predicate places. [2022-11-18 20:53:51,847 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 471 transitions, 6615 flow [2022-11-18 20:53:51,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:51,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:51,847 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:51,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-11-18 20:53:51,847 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash -58120972, now seen corresponding path program 146 times [2022-11-18 20:53:51,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:51,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643471201] [2022-11-18 20:53:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:51,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:52,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:52,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643471201] [2022-11-18 20:53:52,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643471201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:52,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:52,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:53:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966542402] [2022-11-18 20:53:52,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:52,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:53:52,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:53:52,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:53:52,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:52,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 471 transitions, 6615 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:52,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:52,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:52,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:54,182 INFO L130 PetriNetUnfolder]: 465/1301 cut-off events. [2022-11-18 20:53:54,182 INFO L131 PetriNetUnfolder]: For 25037/25037 co-relation queries the response was YES. [2022-11-18 20:53:54,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10601 conditions, 1301 events. 465/1301 cut-off events. For 25037/25037 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7944 event pairs, 49 based on Foata normal form. 1/1299 useless extension candidates. Maximal degree in co-relation 10460. Up to 915 conditions per place. [2022-11-18 20:53:54,200 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 398 selfloop transitions, 110 changer transitions 21/568 dead transitions. [2022-11-18 20:53:54,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 568 transitions, 9368 flow [2022-11-18 20:53:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:53:54,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:53:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2128 transitions. [2022-11-18 20:53:54,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5659574468085107 [2022-11-18 20:53:54,202 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2128 transitions. [2022-11-18 20:53:54,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2128 transitions. [2022-11-18 20:53:54,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:54,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2128 transitions. [2022-11-18 20:53:54,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.2) internal successors, (2128), 40 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:54,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:54,210 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:54,210 INFO L175 Difference]: Start difference. First operand has 396 places, 471 transitions, 6615 flow. Second operand 40 states and 2128 transitions. [2022-11-18 20:53:54,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 568 transitions, 9368 flow [2022-11-18 20:53:54,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 568 transitions, 8366 flow, removed 434 selfloop flow, removed 22 redundant places. [2022-11-18 20:53:54,374 INFO L231 Difference]: Finished difference. Result has 416 places, 525 transitions, 7065 flow [2022-11-18 20:53:54,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5649, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=7065, PETRI_PLACES=416, PETRI_TRANSITIONS=525} [2022-11-18 20:53:54,375 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 328 predicate places. [2022-11-18 20:53:54,375 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 525 transitions, 7065 flow [2022-11-18 20:53:54,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:54,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:54,375 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:54,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-11-18 20:53:54,376 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:54,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:54,376 INFO L85 PathProgramCache]: Analyzing trace with hash -865237668, now seen corresponding path program 147 times [2022-11-18 20:53:54,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:54,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471388879] [2022-11-18 20:53:54,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:54,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:54,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:54,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471388879] [2022-11-18 20:53:54,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471388879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:54,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:54,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:53:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743183731] [2022-11-18 20:53:54,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:54,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:53:54,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:54,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:53:54,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:53:54,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:54,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 525 transitions, 7065 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:54,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:54,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:54,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:56,865 INFO L130 PetriNetUnfolder]: 470/1318 cut-off events. [2022-11-18 20:53:56,865 INFO L131 PetriNetUnfolder]: For 26049/26049 co-relation queries the response was YES. [2022-11-18 20:53:56,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 1318 events. 470/1318 cut-off events. For 26049/26049 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8221 event pairs, 60 based on Foata normal form. 1/1316 useless extension candidates. Maximal degree in co-relation 10447. Up to 845 conditions per place. [2022-11-18 20:53:56,886 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 369 selfloop transitions, 146 changer transitions 34/588 dead transitions. [2022-11-18 20:53:56,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 588 transitions, 9071 flow [2022-11-18 20:53:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:53:56,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:53:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2122 transitions. [2022-11-18 20:53:56,889 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5643617021276596 [2022-11-18 20:53:56,889 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2122 transitions. [2022-11-18 20:53:56,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2122 transitions. [2022-11-18 20:53:56,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:56,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2122 transitions. [2022-11-18 20:53:56,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.05) internal successors, (2122), 40 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:56,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:56,893 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:56,894 INFO L175 Difference]: Start difference. First operand has 416 places, 525 transitions, 7065 flow. Second operand 40 states and 2122 transitions. [2022-11-18 20:53:56,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 588 transitions, 9071 flow [2022-11-18 20:53:57,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 588 transitions, 8141 flow, removed 440 selfloop flow, removed 13 redundant places. [2022-11-18 20:53:57,216 INFO L231 Difference]: Finished difference. Result has 446 places, 528 transitions, 6562 flow [2022-11-18 20:53:57,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6139, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6562, PETRI_PLACES=446, PETRI_TRANSITIONS=528} [2022-11-18 20:53:57,216 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 358 predicate places. [2022-11-18 20:53:57,217 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 528 transitions, 6562 flow [2022-11-18 20:53:57,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:57,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:57,217 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:57,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-11-18 20:53:57,217 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:53:57,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:57,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1849103222, now seen corresponding path program 148 times [2022-11-18 20:53:57,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:57,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295628273] [2022-11-18 20:53:57,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:57,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:57,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:57,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295628273] [2022-11-18 20:53:57,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295628273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:57,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:57,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:53:57,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090851029] [2022-11-18 20:53:57,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:57,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:53:57,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:57,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:53:57,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:53:57,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:53:57,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 528 transitions, 6562 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:57,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:57,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:53:57,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:59,752 INFO L130 PetriNetUnfolder]: 506/1429 cut-off events. [2022-11-18 20:53:59,752 INFO L131 PetriNetUnfolder]: For 30041/30041 co-relation queries the response was YES. [2022-11-18 20:53:59,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11328 conditions, 1429 events. 506/1429 cut-off events. For 30041/30041 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9130 event pairs, 54 based on Foata normal form. 1/1427 useless extension candidates. Maximal degree in co-relation 11175. Up to 985 conditions per place. [2022-11-18 20:53:59,788 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 445 selfloop transitions, 133 changer transitions 21/638 dead transitions. [2022-11-18 20:53:59,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 638 transitions, 9595 flow [2022-11-18 20:53:59,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:53:59,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:53:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1974 transitions. [2022-11-18 20:53:59,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2022-11-18 20:53:59,790 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1974 transitions. [2022-11-18 20:53:59,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1974 transitions. [2022-11-18 20:53:59,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:59,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1974 transitions. [2022-11-18 20:53:59,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.351351351351354) internal successors, (1974), 37 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:59,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:59,794 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:59,794 INFO L175 Difference]: Start difference. First operand has 446 places, 528 transitions, 6562 flow. Second operand 37 states and 1974 transitions. [2022-11-18 20:53:59,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 638 transitions, 9595 flow [2022-11-18 20:54:00,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 638 transitions, 9245 flow, removed 76 selfloop flow, removed 35 redundant places. [2022-11-18 20:54:00,158 INFO L231 Difference]: Finished difference. Result has 457 places, 589 transitions, 7835 flow [2022-11-18 20:54:00,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6270, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7835, PETRI_PLACES=457, PETRI_TRANSITIONS=589} [2022-11-18 20:54:00,159 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 369 predicate places. [2022-11-18 20:54:00,159 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 589 transitions, 7835 flow [2022-11-18 20:54:00,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:00,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:00,160 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:00,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-11-18 20:54:00,160 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:00,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:00,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1241357250, now seen corresponding path program 149 times [2022-11-18 20:54:00,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:00,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271628609] [2022-11-18 20:54:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:00,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:00,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:00,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271628609] [2022-11-18 20:54:00,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271628609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:00,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:00,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-18 20:54:00,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064336530] [2022-11-18 20:54:00,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:00,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:54:00,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:54:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:54:00,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:00,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 589 transitions, 7835 flow. Second operand has 17 states, 17 states have (on average 51.35294117647059) internal successors, (873), 17 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:00,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:00,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:00,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:02,295 INFO L130 PetriNetUnfolder]: 511/1456 cut-off events. [2022-11-18 20:54:02,295 INFO L131 PetriNetUnfolder]: For 32978/32978 co-relation queries the response was YES. [2022-11-18 20:54:02,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11850 conditions, 1456 events. 511/1456 cut-off events. For 32978/32978 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9441 event pairs, 60 based on Foata normal form. 1/1454 useless extension candidates. Maximal degree in co-relation 11687. Up to 1043 conditions per place. [2022-11-18 20:54:02,318 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 482 selfloop transitions, 92 changer transitions 29/642 dead transitions. [2022-11-18 20:54:02,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 642 transitions, 9872 flow [2022-11-18 20:54:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:54:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 20:54:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1514 transitions. [2022-11-18 20:54:02,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5752279635258358 [2022-11-18 20:54:02,320 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1514 transitions. [2022-11-18 20:54:02,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1514 transitions. [2022-11-18 20:54:02,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:02,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1514 transitions. [2022-11-18 20:54:02,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 54.07142857142857) internal successors, (1514), 28 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:02,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:02,323 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:02,323 INFO L175 Difference]: Start difference. First operand has 457 places, 589 transitions, 7835 flow. Second operand 28 states and 1514 transitions. [2022-11-18 20:54:02,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 642 transitions, 9872 flow [2022-11-18 20:54:02,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 642 transitions, 9183 flow, removed 306 selfloop flow, removed 15 redundant places. [2022-11-18 20:54:02,624 INFO L231 Difference]: Finished difference. Result has 473 places, 594 transitions, 7590 flow [2022-11-18 20:54:02,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7206, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7590, PETRI_PLACES=473, PETRI_TRANSITIONS=594} [2022-11-18 20:54:02,625 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 385 predicate places. [2022-11-18 20:54:02,625 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 594 transitions, 7590 flow [2022-11-18 20:54:02,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 51.35294117647059) internal successors, (873), 17 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:02,625 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:02,625 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:02,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-11-18 20:54:02,626 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:02,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:02,627 INFO L85 PathProgramCache]: Analyzing trace with hash -963427796, now seen corresponding path program 150 times [2022-11-18 20:54:02,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:02,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714339898] [2022-11-18 20:54:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:02,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:03,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:03,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714339898] [2022-11-18 20:54:03,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714339898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:03,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:03,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:54:03,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303110437] [2022-11-18 20:54:03,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:03,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:54:03,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:03,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:54:03,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:54:03,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:03,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 594 transitions, 7590 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:03,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:03,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:03,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:04,890 INFO L130 PetriNetUnfolder]: 515/1484 cut-off events. [2022-11-18 20:54:04,890 INFO L131 PetriNetUnfolder]: For 33604/33604 co-relation queries the response was YES. [2022-11-18 20:54:04,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11954 conditions, 1484 events. 515/1484 cut-off events. For 33604/33604 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9682 event pairs, 60 based on Foata normal form. 1/1482 useless extension candidates. Maximal degree in co-relation 11784. Up to 1050 conditions per place. [2022-11-18 20:54:04,916 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 485 selfloop transitions, 103 changer transitions 29/656 dead transitions. [2022-11-18 20:54:04,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 656 transitions, 9955 flow [2022-11-18 20:54:04,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:54:04,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:54:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1717 transitions. [2022-11-18 20:54:04,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.570811170212766 [2022-11-18 20:54:04,918 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1717 transitions. [2022-11-18 20:54:04,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1717 transitions. [2022-11-18 20:54:04,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:04,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1717 transitions. [2022-11-18 20:54:04,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.65625) internal successors, (1717), 32 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:04,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:04,921 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:04,921 INFO L175 Difference]: Start difference. First operand has 473 places, 594 transitions, 7590 flow. Second operand 32 states and 1717 transitions. [2022-11-18 20:54:04,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 656 transitions, 9955 flow [2022-11-18 20:54:05,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 656 transitions, 9572 flow, removed 143 selfloop flow, removed 21 redundant places. [2022-11-18 20:54:05,365 INFO L231 Difference]: Finished difference. Result has 486 places, 607 transitions, 7926 flow [2022-11-18 20:54:05,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7355, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7926, PETRI_PLACES=486, PETRI_TRANSITIONS=607} [2022-11-18 20:54:05,366 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 398 predicate places. [2022-11-18 20:54:05,367 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 607 transitions, 7926 flow [2022-11-18 20:54:05,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:05,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:05,367 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:05,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-11-18 20:54:05,368 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:05,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:05,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1575504402, now seen corresponding path program 151 times [2022-11-18 20:54:05,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:05,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941565061] [2022-11-18 20:54:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:05,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:05,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:05,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941565061] [2022-11-18 20:54:05,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941565061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:05,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:05,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:54:05,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740239594] [2022-11-18 20:54:05,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:05,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:54:05,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:05,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:54:05,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:54:05,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:05,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 607 transitions, 7926 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:05,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:05,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:05,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:08,428 INFO L130 PetriNetUnfolder]: 550/1579 cut-off events. [2022-11-18 20:54:08,428 INFO L131 PetriNetUnfolder]: For 39355/39355 co-relation queries the response was YES. [2022-11-18 20:54:08,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12991 conditions, 1579 events. 550/1579 cut-off events. For 39355/39355 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10501 event pairs, 48 based on Foata normal form. 1/1577 useless extension candidates. Maximal degree in co-relation 12817. Up to 871 conditions per place. [2022-11-18 20:54:08,453 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 344 selfloop transitions, 307 changer transitions 23/713 dead transitions. [2022-11-18 20:54:08,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 713 transitions, 11307 flow [2022-11-18 20:54:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 20:54:08,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-18 20:54:08,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2483 transitions. [2022-11-18 20:54:08,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5620190131281123 [2022-11-18 20:54:08,456 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2483 transitions. [2022-11-18 20:54:08,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2483 transitions. [2022-11-18 20:54:08,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:08,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2483 transitions. [2022-11-18 20:54:08,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 52.829787234042556) internal successors, (2483), 47 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:08,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:08,461 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:08,461 INFO L175 Difference]: Start difference. First operand has 486 places, 607 transitions, 7926 flow. Second operand 47 states and 2483 transitions. [2022-11-18 20:54:08,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 713 transitions, 11307 flow [2022-11-18 20:54:08,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 713 transitions, 10921 flow, removed 121 selfloop flow, removed 26 redundant places. [2022-11-18 20:54:08,768 INFO L231 Difference]: Finished difference. Result has 512 places, 661 transitions, 9695 flow [2022-11-18 20:54:08,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7612, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=9695, PETRI_PLACES=512, PETRI_TRANSITIONS=661} [2022-11-18 20:54:08,769 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 424 predicate places. [2022-11-18 20:54:08,769 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 661 transitions, 9695 flow [2022-11-18 20:54:08,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:08,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:08,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:08,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-11-18 20:54:08,770 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:08,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:08,770 INFO L85 PathProgramCache]: Analyzing trace with hash 324654396, now seen corresponding path program 152 times [2022-11-18 20:54:08,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:08,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486160012] [2022-11-18 20:54:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:08,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:09,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:09,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486160012] [2022-11-18 20:54:09,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486160012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:09,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:09,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:54:09,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418093395] [2022-11-18 20:54:09,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:09,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:54:09,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:09,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:54:09,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:54:09,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:09,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 661 transitions, 9695 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:09,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:09,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:09,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:11,419 INFO L130 PetriNetUnfolder]: 555/1593 cut-off events. [2022-11-18 20:54:11,419 INFO L131 PetriNetUnfolder]: For 44086/44086 co-relation queries the response was YES. [2022-11-18 20:54:11,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13839 conditions, 1593 events. 555/1593 cut-off events. For 44086/44086 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 10646 event pairs, 65 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 13659. Up to 1146 conditions per place. [2022-11-18 20:54:11,447 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 543 selfloop transitions, 95 changer transitions 35/712 dead transitions. [2022-11-18 20:54:11,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 712 transitions, 11776 flow [2022-11-18 20:54:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:54:11,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:54:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1814 transitions. [2022-11-18 20:54:11,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.567584480600751 [2022-11-18 20:54:11,449 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1814 transitions. [2022-11-18 20:54:11,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1814 transitions. [2022-11-18 20:54:11,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:11,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1814 transitions. [2022-11-18 20:54:11,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.35294117647059) internal successors, (1814), 34 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:11,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:11,452 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:11,452 INFO L175 Difference]: Start difference. First operand has 512 places, 661 transitions, 9695 flow. Second operand 34 states and 1814 transitions. [2022-11-18 20:54:11,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 712 transitions, 11776 flow [2022-11-18 20:54:11,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 712 transitions, 11077 flow, removed 270 selfloop flow, removed 28 redundant places. [2022-11-18 20:54:11,765 INFO L231 Difference]: Finished difference. Result has 525 places, 661 transitions, 9283 flow [2022-11-18 20:54:11,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9008, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9283, PETRI_PLACES=525, PETRI_TRANSITIONS=661} [2022-11-18 20:54:11,766 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 437 predicate places. [2022-11-18 20:54:11,766 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 661 transitions, 9283 flow [2022-11-18 20:54:11,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:11,766 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:11,766 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:11,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-11-18 20:54:11,766 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:11,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 832460752, now seen corresponding path program 153 times [2022-11-18 20:54:11,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:11,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25345895] [2022-11-18 20:54:11,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:11,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:12,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:12,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25345895] [2022-11-18 20:54:12,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25345895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:12,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:12,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:54:12,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23507948] [2022-11-18 20:54:12,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:12,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:54:12,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:12,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:54:12,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:54:12,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:12,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 661 transitions, 9283 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:12,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:12,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:12,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:14,236 INFO L130 PetriNetUnfolder]: 581/1656 cut-off events. [2022-11-18 20:54:14,236 INFO L131 PetriNetUnfolder]: For 44913/44913 co-relation queries the response was YES. [2022-11-18 20:54:14,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14314 conditions, 1656 events. 581/1656 cut-off events. For 44913/44913 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11201 event pairs, 49 based on Foata normal form. 1/1654 useless extension candidates. Maximal degree in co-relation 14124. Up to 1144 conditions per place. [2022-11-18 20:54:14,283 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 544 selfloop transitions, 145 changer transitions 32/760 dead transitions. [2022-11-18 20:54:14,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 760 transitions, 12455 flow [2022-11-18 20:54:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:54:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:54:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1872 transitions. [2022-11-18 20:54:14,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689969604863222 [2022-11-18 20:54:14,285 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1872 transitions. [2022-11-18 20:54:14,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1872 transitions. [2022-11-18 20:54:14,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:14,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1872 transitions. [2022-11-18 20:54:14,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.48571428571429) internal successors, (1872), 35 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:14,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:14,289 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:14,289 INFO L175 Difference]: Start difference. First operand has 525 places, 661 transitions, 9283 flow. Second operand 35 states and 1872 transitions. [2022-11-18 20:54:14,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 760 transitions, 12455 flow [2022-11-18 20:54:14,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 760 transitions, 12096 flow, removed 51 selfloop flow, removed 34 redundant places. [2022-11-18 20:54:14,929 INFO L231 Difference]: Finished difference. Result has 533 places, 702 transitions, 10208 flow [2022-11-18 20:54:14,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8993, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=10208, PETRI_PLACES=533, PETRI_TRANSITIONS=702} [2022-11-18 20:54:14,930 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 445 predicate places. [2022-11-18 20:54:14,930 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 702 transitions, 10208 flow [2022-11-18 20:54:14,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:14,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:14,930 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:14,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-11-18 20:54:14,930 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:14,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:14,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1717560350, now seen corresponding path program 154 times [2022-11-18 20:54:14,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:14,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913937709] [2022-11-18 20:54:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:14,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:15,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:15,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913937709] [2022-11-18 20:54:15,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913937709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:15,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:15,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:54:15,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77513058] [2022-11-18 20:54:15,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:15,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:54:15,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:15,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:54:15,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:54:15,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:15,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 702 transitions, 10208 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:15,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:15,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:15,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:17,627 INFO L130 PetriNetUnfolder]: 580/1668 cut-off events. [2022-11-18 20:54:17,628 INFO L131 PetriNetUnfolder]: For 45915/45915 co-relation queries the response was YES. [2022-11-18 20:54:17,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14509 conditions, 1668 events. 580/1668 cut-off events. For 45915/45915 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11355 event pairs, 61 based on Foata normal form. 1/1666 useless extension candidates. Maximal degree in co-relation 14315. Up to 1204 conditions per place. [2022-11-18 20:54:17,659 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 574 selfloop transitions, 110 changer transitions 33/756 dead transitions. [2022-11-18 20:54:17,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 756 transitions, 12613 flow [2022-11-18 20:54:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:54:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:54:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1907 transitions. [2022-11-18 20:54:17,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635342789598109 [2022-11-18 20:54:17,662 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1907 transitions. [2022-11-18 20:54:17,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1907 transitions. [2022-11-18 20:54:17,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:17,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1907 transitions. [2022-11-18 20:54:17,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.97222222222222) internal successors, (1907), 36 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:17,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:17,665 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:17,666 INFO L175 Difference]: Start difference. First operand has 533 places, 702 transitions, 10208 flow. Second operand 36 states and 1907 transitions. [2022-11-18 20:54:17,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 756 transitions, 12613 flow [2022-11-18 20:54:18,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 756 transitions, 12331 flow, removed 113 selfloop flow, removed 17 redundant places. [2022-11-18 20:54:18,112 INFO L231 Difference]: Finished difference. Result has 557 places, 705 transitions, 10417 flow [2022-11-18 20:54:18,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9960, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=10417, PETRI_PLACES=557, PETRI_TRANSITIONS=705} [2022-11-18 20:54:18,113 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 469 predicate places. [2022-11-18 20:54:18,113 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 705 transitions, 10417 flow [2022-11-18 20:54:18,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:18,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:18,113 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:18,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-11-18 20:54:18,113 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:18,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:18,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1883005044, now seen corresponding path program 155 times [2022-11-18 20:54:18,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:18,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292767522] [2022-11-18 20:54:18,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:18,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:18,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:18,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292767522] [2022-11-18 20:54:18,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292767522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:18,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:18,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:54:18,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275099216] [2022-11-18 20:54:18,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:18,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:54:18,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:18,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:54:18,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:54:18,583 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:18,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 705 transitions, 10417 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:18,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:18,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:18,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:20,963 INFO L130 PetriNetUnfolder]: 581/1665 cut-off events. [2022-11-18 20:54:20,963 INFO L131 PetriNetUnfolder]: For 44635/44635 co-relation queries the response was YES. [2022-11-18 20:54:20,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14575 conditions, 1665 events. 581/1665 cut-off events. For 44635/44635 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11322 event pairs, 57 based on Foata normal form. 1/1663 useless extension candidates. Maximal degree in co-relation 14373. Up to 1155 conditions per place. [2022-11-18 20:54:20,994 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 547 selfloop transitions, 142 changer transitions 37/765 dead transitions. [2022-11-18 20:54:20,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 765 transitions, 12855 flow [2022-11-18 20:54:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:54:20,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:54:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2021 transitions. [2022-11-18 20:54:20,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2022-11-18 20:54:20,996 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2021 transitions. [2022-11-18 20:54:20,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2021 transitions. [2022-11-18 20:54:20,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:20,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2021 transitions. [2022-11-18 20:54:20,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 53.18421052631579) internal successors, (2021), 38 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:21,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:21,000 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:21,000 INFO L175 Difference]: Start difference. First operand has 557 places, 705 transitions, 10417 flow. Second operand 38 states and 2021 transitions. [2022-11-18 20:54:21,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 765 transitions, 12855 flow [2022-11-18 20:54:21,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 765 transitions, 12504 flow, removed 77 selfloop flow, removed 31 redundant places. [2022-11-18 20:54:21,720 INFO L231 Difference]: Finished difference. Result has 567 places, 709 transitions, 10604 flow [2022-11-18 20:54:21,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=10122, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10604, PETRI_PLACES=567, PETRI_TRANSITIONS=709} [2022-11-18 20:54:21,721 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 479 predicate places. [2022-11-18 20:54:21,721 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 709 transitions, 10604 flow [2022-11-18 20:54:21,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:21,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:21,721 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:21,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-11-18 20:54:21,721 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:21,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:21,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1794060984, now seen corresponding path program 156 times [2022-11-18 20:54:21,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:21,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375643141] [2022-11-18 20:54:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:21,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:22,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:22,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375643141] [2022-11-18 20:54:22,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375643141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:22,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:22,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:54:22,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852263516] [2022-11-18 20:54:22,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:22,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:54:22,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:22,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:54:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:54:22,192 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:22,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 709 transitions, 10604 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:22,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:22,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:22,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:24,704 INFO L130 PetriNetUnfolder]: 587/1695 cut-off events. [2022-11-18 20:54:24,704 INFO L131 PetriNetUnfolder]: For 45367/45367 co-relation queries the response was YES. [2022-11-18 20:54:24,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14892 conditions, 1695 events. 587/1695 cut-off events. For 45367/45367 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11632 event pairs, 38 based on Foata normal form. 1/1693 useless extension candidates. Maximal degree in co-relation 14685. Up to 1047 conditions per place. [2022-11-18 20:54:24,752 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 469 selfloop transitions, 244 changer transitions 32/784 dead transitions. [2022-11-18 20:54:24,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 784 transitions, 13541 flow [2022-11-18 20:54:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 20:54:24,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-18 20:54:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2225 transitions. [2022-11-18 20:54:24,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635764944275583 [2022-11-18 20:54:24,754 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2225 transitions. [2022-11-18 20:54:24,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2225 transitions. [2022-11-18 20:54:24,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:24,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2225 transitions. [2022-11-18 20:54:24,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.976190476190474) internal successors, (2225), 42 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:24,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:24,760 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:24,760 INFO L175 Difference]: Start difference. First operand has 567 places, 709 transitions, 10604 flow. Second operand 42 states and 2225 transitions. [2022-11-18 20:54:24,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 784 transitions, 13541 flow [2022-11-18 20:54:25,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 784 transitions, 13124 flow, removed 52 selfloop flow, removed 35 redundant places. [2022-11-18 20:54:25,190 INFO L231 Difference]: Finished difference. Result has 574 places, 729 transitions, 11368 flow [2022-11-18 20:54:25,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=10233, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=11368, PETRI_PLACES=574, PETRI_TRANSITIONS=729} [2022-11-18 20:54:25,191 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 486 predicate places. [2022-11-18 20:54:25,192 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 729 transitions, 11368 flow [2022-11-18 20:54:25,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:25,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:25,192 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:25,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-11-18 20:54:25,193 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:25,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:25,193 INFO L85 PathProgramCache]: Analyzing trace with hash -51062402, now seen corresponding path program 157 times [2022-11-18 20:54:25,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:25,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716381649] [2022-11-18 20:54:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:25,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:25,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:25,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716381649] [2022-11-18 20:54:25,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716381649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:25,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:25,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:54:25,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813116413] [2022-11-18 20:54:25,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:25,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:54:25,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:54:25,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:54:25,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:25,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 729 transitions, 11368 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:25,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:25,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:25,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:28,372 INFO L130 PetriNetUnfolder]: 586/1703 cut-off events. [2022-11-18 20:54:28,372 INFO L131 PetriNetUnfolder]: For 46486/46486 co-relation queries the response was YES. [2022-11-18 20:54:28,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15160 conditions, 1703 events. 586/1703 cut-off events. For 46486/46486 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11780 event pairs, 39 based on Foata normal form. 1/1701 useless extension candidates. Maximal degree in co-relation 14955. Up to 1065 conditions per place. [2022-11-18 20:54:28,404 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 472 selfloop transitions, 236 changer transitions 37/784 dead transitions. [2022-11-18 20:54:28,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 784 transitions, 13759 flow [2022-11-18 20:54:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 20:54:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 20:54:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2374 transitions. [2022-11-18 20:54:28,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5612293144208038 [2022-11-18 20:54:28,406 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2374 transitions. [2022-11-18 20:54:28,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2374 transitions. [2022-11-18 20:54:28,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:28,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2374 transitions. [2022-11-18 20:54:28,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 52.75555555555555) internal successors, (2374), 45 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:28,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:28,410 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:28,410 INFO L175 Difference]: Start difference. First operand has 574 places, 729 transitions, 11368 flow. Second operand 45 states and 2374 transitions. [2022-11-18 20:54:28,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 784 transitions, 13759 flow [2022-11-18 20:54:29,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 784 transitions, 13244 flow, removed 134 selfloop flow, removed 36 redundant places. [2022-11-18 20:54:29,017 INFO L231 Difference]: Finished difference. Result has 590 places, 733 transitions, 11642 flow [2022-11-18 20:54:29,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=10910, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11642, PETRI_PLACES=590, PETRI_TRANSITIONS=733} [2022-11-18 20:54:29,018 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 502 predicate places. [2022-11-18 20:54:29,018 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 733 transitions, 11642 flow [2022-11-18 20:54:29,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:29,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:29,019 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:29,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-11-18 20:54:29,019 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash 48180748, now seen corresponding path program 158 times [2022-11-18 20:54:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:29,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632609523] [2022-11-18 20:54:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:29,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:29,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632609523] [2022-11-18 20:54:29,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632609523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:29,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:29,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:54:29,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099385124] [2022-11-18 20:54:29,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:29,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:54:29,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:29,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:54:29,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:54:29,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:29,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 733 transitions, 11642 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:29,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:29,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:29,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:32,100 INFO L130 PetriNetUnfolder]: 591/1684 cut-off events. [2022-11-18 20:54:32,100 INFO L131 PetriNetUnfolder]: For 44808/44808 co-relation queries the response was YES. [2022-11-18 20:54:32,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15468 conditions, 1684 events. 591/1684 cut-off events. For 44808/44808 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11576 event pairs, 58 based on Foata normal form. 1/1681 useless extension candidates. Maximal degree in co-relation 15255. Up to 1226 conditions per place. [2022-11-18 20:54:32,156 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 584 selfloop transitions, 142 changer transitions 32/797 dead transitions. [2022-11-18 20:54:32,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 797 transitions, 14519 flow [2022-11-18 20:54:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:54:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:54:32,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2013 transitions. [2022-11-18 20:54:32,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635498320268757 [2022-11-18 20:54:32,159 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2013 transitions. [2022-11-18 20:54:32,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2013 transitions. [2022-11-18 20:54:32,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:32,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2013 transitions. [2022-11-18 20:54:32,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.973684210526315) internal successors, (2013), 38 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:32,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:32,164 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:32,164 INFO L175 Difference]: Start difference. First operand has 590 places, 733 transitions, 11642 flow. Second operand 38 states and 2013 transitions. [2022-11-18 20:54:32,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 797 transitions, 14519 flow [2022-11-18 20:54:32,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 797 transitions, 13834 flow, removed 63 selfloop flow, removed 43 redundant places. [2022-11-18 20:54:32,834 INFO L231 Difference]: Finished difference. Result has 588 places, 749 transitions, 11884 flow [2022-11-18 20:54:32,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11045, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=11884, PETRI_PLACES=588, PETRI_TRANSITIONS=749} [2022-11-18 20:54:32,835 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-11-18 20:54:32,835 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 749 transitions, 11884 flow [2022-11-18 20:54:32,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:32,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:32,836 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:32,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-11-18 20:54:32,836 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:32,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:32,836 INFO L85 PathProgramCache]: Analyzing trace with hash -47759764, now seen corresponding path program 159 times [2022-11-18 20:54:32,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:32,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008481761] [2022-11-18 20:54:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:32,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:33,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:33,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008481761] [2022-11-18 20:54:33,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008481761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:33,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:33,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:54:33,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618888313] [2022-11-18 20:54:33,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:33,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:54:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:54:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:54:33,269 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:33,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 749 transitions, 11884 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:33,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:33,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:33,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:35,565 INFO L130 PetriNetUnfolder]: 587/1707 cut-off events. [2022-11-18 20:54:35,565 INFO L131 PetriNetUnfolder]: For 44607/44607 co-relation queries the response was YES. [2022-11-18 20:54:35,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15317 conditions, 1707 events. 587/1707 cut-off events. For 44607/44607 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 11854 event pairs, 56 based on Foata normal form. 1/1705 useless extension candidates. Maximal degree in co-relation 15103. Up to 1268 conditions per place. [2022-11-18 20:54:35,604 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 631 selfloop transitions, 89 changer transitions 35/794 dead transitions. [2022-11-18 20:54:35,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 794 transitions, 14174 flow [2022-11-18 20:54:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:54:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:54:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1607 transitions. [2022-11-18 20:54:35,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5698581560283688 [2022-11-18 20:54:35,606 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1607 transitions. [2022-11-18 20:54:35,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1607 transitions. [2022-11-18 20:54:35,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:35,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1607 transitions. [2022-11-18 20:54:35,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.56666666666667) internal successors, (1607), 30 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:35,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:35,609 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:35,609 INFO L175 Difference]: Start difference. First operand has 588 places, 749 transitions, 11884 flow. Second operand 30 states and 1607 transitions. [2022-11-18 20:54:35,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 794 transitions, 14174 flow [2022-11-18 20:54:36,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 794 transitions, 13655 flow, removed 182 selfloop flow, removed 29 redundant places. [2022-11-18 20:54:36,374 INFO L231 Difference]: Finished difference. Result has 591 places, 745 transitions, 11713 flow [2022-11-18 20:54:36,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11515, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11713, PETRI_PLACES=591, PETRI_TRANSITIONS=745} [2022-11-18 20:54:36,375 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-18 20:54:36,375 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 745 transitions, 11713 flow [2022-11-18 20:54:36,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:36,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:36,376 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:36,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-11-18 20:54:36,376 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:36,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:36,377 INFO L85 PathProgramCache]: Analyzing trace with hash -764338064, now seen corresponding path program 160 times [2022-11-18 20:54:36,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:36,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131696882] [2022-11-18 20:54:36,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:36,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:36,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:36,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131696882] [2022-11-18 20:54:36,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131696882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:36,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:36,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:54:36,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475278145] [2022-11-18 20:54:36,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:36,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:54:36,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:36,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:54:36,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:54:36,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:36,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 745 transitions, 11713 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:36,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:36,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:36,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:39,342 INFO L130 PetriNetUnfolder]: 605/1736 cut-off events. [2022-11-18 20:54:39,342 INFO L131 PetriNetUnfolder]: For 47801/47801 co-relation queries the response was YES. [2022-11-18 20:54:39,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15838 conditions, 1736 events. 605/1736 cut-off events. For 47801/47801 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11996 event pairs, 41 based on Foata normal form. 1/1734 useless extension candidates. Maximal degree in co-relation 15620. Up to 1286 conditions per place. [2022-11-18 20:54:39,380 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 649 selfloop transitions, 113 changer transitions 20/821 dead transitions. [2022-11-18 20:54:39,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 821 transitions, 14842 flow [2022-11-18 20:54:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:54:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:54:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1821 transitions. [2022-11-18 20:54:39,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5697747183979975 [2022-11-18 20:54:39,382 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1821 transitions. [2022-11-18 20:54:39,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1821 transitions. [2022-11-18 20:54:39,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:39,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1821 transitions. [2022-11-18 20:54:39,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.55882352941177) internal successors, (1821), 34 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:39,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:39,386 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:39,386 INFO L175 Difference]: Start difference. First operand has 591 places, 745 transitions, 11713 flow. Second operand 34 states and 1821 transitions. [2022-11-18 20:54:39,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 821 transitions, 14842 flow [2022-11-18 20:54:39,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 821 transitions, 14518 flow, removed 47 selfloop flow, removed 28 redundant places. [2022-11-18 20:54:39,857 INFO L231 Difference]: Finished difference. Result has 593 places, 775 transitions, 12508 flow [2022-11-18 20:54:39,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11451, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=12508, PETRI_PLACES=593, PETRI_TRANSITIONS=775} [2022-11-18 20:54:39,858 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 505 predicate places. [2022-11-18 20:54:39,858 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 775 transitions, 12508 flow [2022-11-18 20:54:39,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:39,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:39,858 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:39,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-11-18 20:54:39,859 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:39,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:39,859 INFO L85 PathProgramCache]: Analyzing trace with hash -51073470, now seen corresponding path program 161 times [2022-11-18 20:54:39,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:39,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988873456] [2022-11-18 20:54:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:39,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:40,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:40,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988873456] [2022-11-18 20:54:40,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988873456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:40,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:40,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:54:40,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826281822] [2022-11-18 20:54:40,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:40,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:54:40,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:40,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:54:40,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:54:40,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:40,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 775 transitions, 12508 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:40,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:40,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:40,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:42,846 INFO L130 PetriNetUnfolder]: 608/1774 cut-off events. [2022-11-18 20:54:42,846 INFO L131 PetriNetUnfolder]: For 50672/50672 co-relation queries the response was YES. [2022-11-18 20:54:42,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16210 conditions, 1774 events. 608/1774 cut-off events. For 50672/50672 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12500 event pairs, 61 based on Foata normal form. 1/1772 useless extension candidates. Maximal degree in co-relation 15996. Up to 1285 conditions per place. [2022-11-18 20:54:42,880 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 616 selfloop transitions, 126 changer transitions 35/816 dead transitions. [2022-11-18 20:54:42,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 816 transitions, 14686 flow [2022-11-18 20:54:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:54:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:54:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1859 transitions. [2022-11-18 20:54:42,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650455927051672 [2022-11-18 20:54:42,882 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1859 transitions. [2022-11-18 20:54:42,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1859 transitions. [2022-11-18 20:54:42,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:42,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1859 transitions. [2022-11-18 20:54:42,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.114285714285714) internal successors, (1859), 35 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:42,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:42,886 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:42,887 INFO L175 Difference]: Start difference. First operand has 593 places, 775 transitions, 12508 flow. Second operand 35 states and 1859 transitions. [2022-11-18 20:54:42,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 816 transitions, 14686 flow [2022-11-18 20:54:43,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 816 transitions, 14114 flow, removed 247 selfloop flow, removed 14 redundant places. [2022-11-18 20:54:43,893 INFO L231 Difference]: Finished difference. Result has 617 places, 767 transitions, 12193 flow [2022-11-18 20:54:43,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11940, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12193, PETRI_PLACES=617, PETRI_TRANSITIONS=767} [2022-11-18 20:54:43,893 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 529 predicate places. [2022-11-18 20:54:43,894 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 767 transitions, 12193 flow [2022-11-18 20:54:43,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:43,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:43,894 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:43,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-11-18 20:54:43,894 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:43,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:43,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2043720326, now seen corresponding path program 162 times [2022-11-18 20:54:43,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:43,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223617837] [2022-11-18 20:54:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:43,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:44,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:44,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223617837] [2022-11-18 20:54:44,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223617837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:44,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:44,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:54:44,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155372126] [2022-11-18 20:54:44,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:44,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:54:44,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:54:44,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:54:44,402 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:44,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 767 transitions, 12193 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:44,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:44,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:44,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:46,865 INFO L130 PetriNetUnfolder]: 600/1760 cut-off events. [2022-11-18 20:54:46,865 INFO L131 PetriNetUnfolder]: For 49803/49803 co-relation queries the response was YES. [2022-11-18 20:54:46,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15971 conditions, 1760 events. 600/1760 cut-off events. For 49803/49803 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12319 event pairs, 66 based on Foata normal form. 1/1758 useless extension candidates. Maximal degree in co-relation 15748. Up to 1304 conditions per place. [2022-11-18 20:54:46,898 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 653 selfloop transitions, 100 changer transitions 22/814 dead transitions. [2022-11-18 20:54:46,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 814 transitions, 14396 flow [2022-11-18 20:54:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:54:46,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 20:54:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1555 transitions. [2022-11-18 20:54:46,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5704328686720469 [2022-11-18 20:54:46,900 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1555 transitions. [2022-11-18 20:54:46,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1555 transitions. [2022-11-18 20:54:46,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:46,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1555 transitions. [2022-11-18 20:54:46,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.62068965517241) internal successors, (1555), 29 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:46,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:46,903 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:46,903 INFO L175 Difference]: Start difference. First operand has 617 places, 767 transitions, 12193 flow. Second operand 29 states and 1555 transitions. [2022-11-18 20:54:46,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 814 transitions, 14396 flow [2022-11-18 20:54:47,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 814 transitions, 14038 flow, removed 21 selfloop flow, removed 36 redundant places. [2022-11-18 20:54:47,727 INFO L231 Difference]: Finished difference. Result has 606 places, 773 transitions, 12226 flow [2022-11-18 20:54:47,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11855, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12226, PETRI_PLACES=606, PETRI_TRANSITIONS=773} [2022-11-18 20:54:47,728 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 518 predicate places. [2022-11-18 20:54:47,728 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 773 transitions, 12226 flow [2022-11-18 20:54:47,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:47,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:47,728 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:47,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-11-18 20:54:47,728 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:47,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:47,729 INFO L85 PathProgramCache]: Analyzing trace with hash -664749954, now seen corresponding path program 163 times [2022-11-18 20:54:47,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:47,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514754448] [2022-11-18 20:54:47,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:47,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:48,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:48,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514754448] [2022-11-18 20:54:48,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514754448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:48,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:48,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:54:48,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852346868] [2022-11-18 20:54:48,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:48,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:54:48,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:48,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:54:48,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:54:48,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:48,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 773 transitions, 12226 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:48,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:48,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:48,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:50,839 INFO L130 PetriNetUnfolder]: 667/1950 cut-off events. [2022-11-18 20:54:50,839 INFO L131 PetriNetUnfolder]: For 60022/60022 co-relation queries the response was YES. [2022-11-18 20:54:50,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17895 conditions, 1950 events. 667/1950 cut-off events. For 60022/60022 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14149 event pairs, 51 based on Foata normal form. 1/1948 useless extension candidates. Maximal degree in co-relation 17673. Up to 1325 conditions per place. [2022-11-18 20:54:50,881 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 638 selfloop transitions, 211 changer transitions 21/909 dead transitions. [2022-11-18 20:54:50,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 909 transitions, 16598 flow [2022-11-18 20:54:50,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:54:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:54:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2130 transitions. [2022-11-18 20:54:50,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2022-11-18 20:54:50,883 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2130 transitions. [2022-11-18 20:54:50,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2130 transitions. [2022-11-18 20:54:50,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:50,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2130 transitions. [2022-11-18 20:54:50,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.25) internal successors, (2130), 40 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:50,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:50,887 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:50,887 INFO L175 Difference]: Start difference. First operand has 606 places, 773 transitions, 12226 flow. Second operand 40 states and 2130 transitions. [2022-11-18 20:54:50,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 909 transitions, 16598 flow [2022-11-18 20:54:51,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 909 transitions, 16309 flow, removed 83 selfloop flow, removed 21 redundant places. [2022-11-18 20:54:51,854 INFO L231 Difference]: Finished difference. Result has 633 places, 857 transitions, 14412 flow [2022-11-18 20:54:51,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11993, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=14412, PETRI_PLACES=633, PETRI_TRANSITIONS=857} [2022-11-18 20:54:51,855 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 545 predicate places. [2022-11-18 20:54:51,855 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 857 transitions, 14412 flow [2022-11-18 20:54:51,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:51,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:51,855 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:51,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-11-18 20:54:51,855 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:51,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:51,856 INFO L85 PathProgramCache]: Analyzing trace with hash 706741162, now seen corresponding path program 164 times [2022-11-18 20:54:51,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:51,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712414222] [2022-11-18 20:54:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:51,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:52,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:52,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712414222] [2022-11-18 20:54:52,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712414222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:52,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:52,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:54:52,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627756429] [2022-11-18 20:54:52,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:52,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:54:52,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:52,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:54:52,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:54:52,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:52,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 857 transitions, 14412 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:52,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:52,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:52,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:55,241 INFO L130 PetriNetUnfolder]: 670/1974 cut-off events. [2022-11-18 20:54:55,241 INFO L131 PetriNetUnfolder]: For 67339/67339 co-relation queries the response was YES. [2022-11-18 20:54:55,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18790 conditions, 1974 events. 670/1974 cut-off events. For 67339/67339 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 14466 event pairs, 51 based on Foata normal form. 1/1972 useless extension candidates. Maximal degree in co-relation 18558. Up to 1438 conditions per place. [2022-11-18 20:54:55,286 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 720 selfloop transitions, 122 changer transitions 26/907 dead transitions. [2022-11-18 20:54:55,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 907 transitions, 17132 flow [2022-11-18 20:54:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:54:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:54:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1761 transitions. [2022-11-18 20:54:55,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5676982591876208 [2022-11-18 20:54:55,289 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1761 transitions. [2022-11-18 20:54:55,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1761 transitions. [2022-11-18 20:54:55,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:55,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1761 transitions. [2022-11-18 20:54:55,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.36363636363637) internal successors, (1761), 33 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:55,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:55,292 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:55,292 INFO L175 Difference]: Start difference. First operand has 633 places, 857 transitions, 14412 flow. Second operand 33 states and 1761 transitions. [2022-11-18 20:54:55,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 907 transitions, 17132 flow [2022-11-18 20:54:56,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 907 transitions, 16238 flow, removed 399 selfloop flow, removed 18 redundant places. [2022-11-18 20:54:56,258 INFO L231 Difference]: Finished difference. Result has 651 places, 860 transitions, 14004 flow [2022-11-18 20:54:56,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=13556, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=14004, PETRI_PLACES=651, PETRI_TRANSITIONS=860} [2022-11-18 20:54:56,259 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 563 predicate places. [2022-11-18 20:54:56,259 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 860 transitions, 14004 flow [2022-11-18 20:54:56,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:56,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:56,260 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:56,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-11-18 20:54:56,260 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:54:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash -50515862, now seen corresponding path program 165 times [2022-11-18 20:54:56,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:56,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738136625] [2022-11-18 20:54:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:56,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:56,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738136625] [2022-11-18 20:54:56,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738136625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:56,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:56,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:54:56,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068915590] [2022-11-18 20:54:56,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:56,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:54:56,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:54:56,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:54:56,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:54:56,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 860 transitions, 14004 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:56,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:56,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:54:56,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:59,531 INFO L130 PetriNetUnfolder]: 731/2125 cut-off events. [2022-11-18 20:54:59,531 INFO L131 PetriNetUnfolder]: For 76827/76827 co-relation queries the response was YES. [2022-11-18 20:54:59,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20369 conditions, 2125 events. 731/2125 cut-off events. For 76827/76827 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15904 event pairs, 55 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 20128. Up to 1419 conditions per place. [2022-11-18 20:54:59,594 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 720 selfloop transitions, 204 changer transitions 47/1010 dead transitions. [2022-11-18 20:54:59,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 1010 transitions, 18991 flow [2022-11-18 20:54:59,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:54:59,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:54:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1813 transitions. [2022-11-18 20:54:59,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5672715894868585 [2022-11-18 20:54:59,596 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1813 transitions. [2022-11-18 20:54:59,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1813 transitions. [2022-11-18 20:54:59,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:59,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1813 transitions. [2022-11-18 20:54:59,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.3235294117647) internal successors, (1813), 34 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:59,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:59,601 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:59,601 INFO L175 Difference]: Start difference. First operand has 651 places, 860 transitions, 14004 flow. Second operand 34 states and 1813 transitions. [2022-11-18 20:54:59,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 1010 transitions, 18991 flow [2022-11-18 20:55:00,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 1010 transitions, 18666 flow, removed 69 selfloop flow, removed 29 redundant places. [2022-11-18 20:55:00,692 INFO L231 Difference]: Finished difference. Result has 660 places, 927 transitions, 15865 flow [2022-11-18 20:55:00,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=13715, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=15865, PETRI_PLACES=660, PETRI_TRANSITIONS=927} [2022-11-18 20:55:00,693 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 572 predicate places. [2022-11-18 20:55:00,693 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 927 transitions, 15865 flow [2022-11-18 20:55:00,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:00,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:00,694 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:00,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-11-18 20:55:00,694 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:55:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:00,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1227091020, now seen corresponding path program 166 times [2022-11-18 20:55:00,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:00,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427453241] [2022-11-18 20:55:00,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:00,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:01,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:01,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427453241] [2022-11-18 20:55:01,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427453241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:01,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:01,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:55:01,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689294699] [2022-11-18 20:55:01,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:01,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:55:01,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:55:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:55:01,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:55:01,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 927 transitions, 15865 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:01,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:01,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:55:01,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:03,995 INFO L130 PetriNetUnfolder]: 719/2092 cut-off events. [2022-11-18 20:55:03,996 INFO L131 PetriNetUnfolder]: For 81339/81339 co-relation queries the response was YES. [2022-11-18 20:55:04,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20751 conditions, 2092 events. 719/2092 cut-off events. For 81339/81339 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15532 event pairs, 45 based on Foata normal form. 1/2090 useless extension candidates. Maximal degree in co-relation 20506. Up to 1535 conditions per place. [2022-11-18 20:55:04,074 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 776 selfloop transitions, 145 changer transitions 25/985 dead transitions. [2022-11-18 20:55:04,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 985 transitions, 19000 flow [2022-11-18 20:55:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:55:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:55:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1769 transitions. [2022-11-18 20:55:04,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5702772404900065 [2022-11-18 20:55:04,076 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1769 transitions. [2022-11-18 20:55:04,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1769 transitions. [2022-11-18 20:55:04,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:04,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1769 transitions. [2022-11-18 20:55:04,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.60606060606061) internal successors, (1769), 33 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:04,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:04,079 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:04,079 INFO L175 Difference]: Start difference. First operand has 660 places, 927 transitions, 15865 flow. Second operand 33 states and 1769 transitions. [2022-11-18 20:55:04,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 985 transitions, 19000 flow [2022-11-18 20:55:05,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 985 transitions, 18312 flow, removed 217 selfloop flow, removed 27 redundant places. [2022-11-18 20:55:05,321 INFO L231 Difference]: Finished difference. Result has 667 places, 938 transitions, 15945 flow [2022-11-18 20:55:05,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=15221, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=785, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=15945, PETRI_PLACES=667, PETRI_TRANSITIONS=938} [2022-11-18 20:55:05,322 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 579 predicate places. [2022-11-18 20:55:05,322 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 938 transitions, 15945 flow [2022-11-18 20:55:05,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:05,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:05,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:05,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-11-18 20:55:05,323 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:55:05,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:05,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1866040382, now seen corresponding path program 167 times [2022-11-18 20:55:05,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:05,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894472920] [2022-11-18 20:55:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:05,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:05,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:05,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894472920] [2022-11-18 20:55:05,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894472920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:05,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:05,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:55:05,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792314420] [2022-11-18 20:55:05,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:05,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:55:05,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:05,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:55:05,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:55:05,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:55:05,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 938 transitions, 15945 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:05,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:05,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:55:05,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:08,614 INFO L130 PetriNetUnfolder]: 720/2104 cut-off events. [2022-11-18 20:55:08,614 INFO L131 PetriNetUnfolder]: For 79788/79788 co-relation queries the response was YES. [2022-11-18 20:55:08,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20819 conditions, 2104 events. 720/2104 cut-off events. For 79788/79788 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 15748 event pairs, 52 based on Foata normal form. 1/2102 useless extension candidates. Maximal degree in co-relation 20571. Up to 1566 conditions per place. [2022-11-18 20:55:08,661 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 800 selfloop transitions, 115 changer transitions 30/984 dead transitions. [2022-11-18 20:55:08,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 984 transitions, 18884 flow [2022-11-18 20:55:08,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:55:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:55:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1853 transitions. [2022-11-18 20:55:08,663 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5632218844984802 [2022-11-18 20:55:08,663 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1853 transitions. [2022-11-18 20:55:08,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1853 transitions. [2022-11-18 20:55:08,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:08,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1853 transitions. [2022-11-18 20:55:08,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.94285714285714) internal successors, (1853), 35 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:08,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:08,667 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:08,667 INFO L175 Difference]: Start difference. First operand has 667 places, 938 transitions, 15945 flow. Second operand 35 states and 1853 transitions. [2022-11-18 20:55:08,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 984 transitions, 18884 flow [2022-11-18 20:55:09,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 984 transitions, 18502 flow, removed 121 selfloop flow, removed 27 redundant places. [2022-11-18 20:55:09,687 INFO L231 Difference]: Finished difference. Result has 677 places, 936 transitions, 16002 flow [2022-11-18 20:55:09,688 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=15613, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=824, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=16002, PETRI_PLACES=677, PETRI_TRANSITIONS=936} [2022-11-18 20:55:09,688 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 589 predicate places. [2022-11-18 20:55:09,689 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 936 transitions, 16002 flow [2022-11-18 20:55:09,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:09,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:09,689 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:09,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-11-18 20:55:09,690 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:55:09,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:09,690 INFO L85 PathProgramCache]: Analyzing trace with hash -820000484, now seen corresponding path program 168 times [2022-11-18 20:55:09,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:09,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577904276] [2022-11-18 20:55:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:09,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:10,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:10,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577904276] [2022-11-18 20:55:10,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577904276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:10,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:10,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:55:10,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672923332] [2022-11-18 20:55:10,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:10,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:55:10,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:10,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:55:10,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:55:10,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:55:10,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 936 transitions, 16002 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:10,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:10,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:55:10,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:12,757 INFO L130 PetriNetUnfolder]: 728/2143 cut-off events. [2022-11-18 20:55:12,757 INFO L131 PetriNetUnfolder]: For 82017/82017 co-relation queries the response was YES. [2022-11-18 20:55:12,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21141 conditions, 2143 events. 728/2143 cut-off events. For 82017/82017 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16200 event pairs, 52 based on Foata normal form. 1/2141 useless extension candidates. Maximal degree in co-relation 20891. Up to 1525 conditions per place. [2022-11-18 20:55:12,841 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 771 selfloop transitions, 173 changer transitions 26/1009 dead transitions. [2022-11-18 20:55:12,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 1009 transitions, 19500 flow [2022-11-18 20:55:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:55:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:55:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1707 transitions. [2022-11-18 20:55:12,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5674867021276596 [2022-11-18 20:55:12,843 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1707 transitions. [2022-11-18 20:55:12,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1707 transitions. [2022-11-18 20:55:12,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:12,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1707 transitions. [2022-11-18 20:55:12,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.34375) internal successors, (1707), 32 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:12,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:12,847 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:12,847 INFO L175 Difference]: Start difference. First operand has 677 places, 936 transitions, 16002 flow. Second operand 32 states and 1707 transitions. [2022-11-18 20:55:12,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 1009 transitions, 19500 flow [2022-11-18 20:55:13,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 1009 transitions, 19087 flow, removed 78 selfloop flow, removed 34 redundant places. [2022-11-18 20:55:13,861 INFO L231 Difference]: Finished difference. Result has 674 places, 959 transitions, 16671 flow [2022-11-18 20:55:13,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=15633, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=16671, PETRI_PLACES=674, PETRI_TRANSITIONS=959} [2022-11-18 20:55:13,862 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 586 predicate places. [2022-11-18 20:55:13,862 INFO L495 AbstractCegarLoop]: Abstraction has has 674 places, 959 transitions, 16671 flow [2022-11-18 20:55:13,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:13,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:13,863 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:13,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-11-18 20:55:13,863 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:55:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1117866652, now seen corresponding path program 169 times [2022-11-18 20:55:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:13,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738507670] [2022-11-18 20:55:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:14,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:14,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738507670] [2022-11-18 20:55:14,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738507670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:14,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:14,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:55:14,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302079839] [2022-11-18 20:55:14,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:14,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:55:14,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:14,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:55:14,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:55:14,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:55:14,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 959 transitions, 16671 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:14,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:14,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:55:14,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:17,061 INFO L130 PetriNetUnfolder]: 729/2161 cut-off events. [2022-11-18 20:55:17,061 INFO L131 PetriNetUnfolder]: For 84406/84406 co-relation queries the response was YES. [2022-11-18 20:55:17,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21381 conditions, 2161 events. 729/2161 cut-off events. For 84406/84406 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16413 event pairs, 50 based on Foata normal form. 1/2159 useless extension candidates. Maximal degree in co-relation 21131. Up to 1522 conditions per place. [2022-11-18 20:55:17,113 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 768 selfloop transitions, 179 changer transitions 28/1014 dead transitions. [2022-11-18 20:55:17,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 1014 transitions, 19859 flow [2022-11-18 20:55:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:55:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:55:17,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1757 transitions. [2022-11-18 20:55:17,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664087685364281 [2022-11-18 20:55:17,116 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1757 transitions. [2022-11-18 20:55:17,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1757 transitions. [2022-11-18 20:55:17,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:17,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1757 transitions. [2022-11-18 20:55:17,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.24242424242424) internal successors, (1757), 33 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:17,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:17,119 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:17,119 INFO L175 Difference]: Start difference. First operand has 674 places, 959 transitions, 16671 flow. Second operand 33 states and 1757 transitions. [2022-11-18 20:55:17,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 1014 transitions, 19859 flow [2022-11-18 20:55:18,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 1014 transitions, 19570 flow, removed 94 selfloop flow, removed 24 redundant places. [2022-11-18 20:55:18,144 INFO L231 Difference]: Finished difference. Result has 685 places, 962 transitions, 17013 flow [2022-11-18 20:55:18,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=16410, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=17013, PETRI_PLACES=685, PETRI_TRANSITIONS=962} [2022-11-18 20:55:18,145 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 597 predicate places. [2022-11-18 20:55:18,145 INFO L495 AbstractCegarLoop]: Abstraction has has 685 places, 962 transitions, 17013 flow [2022-11-18 20:55:18,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:18,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:18,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:18,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-11-18 20:55:18,146 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:55:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:18,146 INFO L85 PathProgramCache]: Analyzing trace with hash 172734910, now seen corresponding path program 170 times [2022-11-18 20:55:18,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:18,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203443269] [2022-11-18 20:55:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:18,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:18,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:18,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203443269] [2022-11-18 20:55:18,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203443269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:18,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:18,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:55:18,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098706404] [2022-11-18 20:55:18,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:18,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:55:18,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:18,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:55:18,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:55:18,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:55:18,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 962 transitions, 17013 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:18,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:18,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:55:18,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:21,489 INFO L130 PetriNetUnfolder]: 733/2160 cut-off events. [2022-11-18 20:55:21,489 INFO L131 PetriNetUnfolder]: For 87484/87484 co-relation queries the response was YES. [2022-11-18 20:55:21,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21770 conditions, 2160 events. 733/2160 cut-off events. For 87484/87484 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16373 event pairs, 61 based on Foata normal form. 1/2158 useless extension candidates. Maximal degree in co-relation 21516. Up to 1606 conditions per place. [2022-11-18 20:55:21,538 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 832 selfloop transitions, 116 changer transitions 30/1017 dead transitions. [2022-11-18 20:55:21,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 714 places, 1017 transitions, 20152 flow [2022-11-18 20:55:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:55:21,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:55:21,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1950 transitions. [2022-11-18 20:55:21,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606670500287522 [2022-11-18 20:55:21,541 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1950 transitions. [2022-11-18 20:55:21,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1950 transitions. [2022-11-18 20:55:21,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:21,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1950 transitions. [2022-11-18 20:55:21,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.7027027027027) internal successors, (1950), 37 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:21,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:21,545 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:21,545 INFO L175 Difference]: Start difference. First operand has 685 places, 962 transitions, 17013 flow. Second operand 37 states and 1950 transitions. [2022-11-18 20:55:21,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 714 places, 1017 transitions, 20152 flow [2022-11-18 20:55:23,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 1017 transitions, 19783 flow, removed 81 selfloop flow, removed 27 redundant places. [2022-11-18 20:55:23,106 INFO L231 Difference]: Finished difference. Result has 697 places, 971 transitions, 17308 flow [2022-11-18 20:55:23,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=16676, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=17308, PETRI_PLACES=697, PETRI_TRANSITIONS=971} [2022-11-18 20:55:23,107 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 609 predicate places. [2022-11-18 20:55:23,107 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 971 transitions, 17308 flow [2022-11-18 20:55:23,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:23,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:23,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:23,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-11-18 20:55:23,107 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:55:23,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:23,108 INFO L85 PathProgramCache]: Analyzing trace with hash 432502776, now seen corresponding path program 171 times [2022-11-18 20:55:23,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:23,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899481542] [2022-11-18 20:55:23,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:23,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:23,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:23,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899481542] [2022-11-18 20:55:23,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899481542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:23,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:23,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:55:23,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823588946] [2022-11-18 20:55:23,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:23,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:55:23,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:23,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:55:23,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:55:23,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:55:23,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 971 transitions, 17308 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:23,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:23,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:55:23,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:26,671 INFO L130 PetriNetUnfolder]: 747/2197 cut-off events. [2022-11-18 20:55:26,671 INFO L131 PetriNetUnfolder]: For 92742/92742 co-relation queries the response was YES. [2022-11-18 20:55:26,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22474 conditions, 2197 events. 747/2197 cut-off events. For 92742/92742 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16751 event pairs, 48 based on Foata normal form. 1/2195 useless extension candidates. Maximal degree in co-relation 22218. Up to 1653 conditions per place. [2022-11-18 20:55:26,721 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 860 selfloop transitions, 127 changer transitions 21/1047 dead transitions. [2022-11-18 20:55:26,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 1047 transitions, 21241 flow [2022-11-18 20:55:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:55:26,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 20:55:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2075 transitions. [2022-11-18 20:55:26,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5660120021822149 [2022-11-18 20:55:26,725 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2075 transitions. [2022-11-18 20:55:26,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2075 transitions. [2022-11-18 20:55:26,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:26,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2075 transitions. [2022-11-18 20:55:26,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.205128205128204) internal successors, (2075), 39 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:26,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:26,732 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:26,732 INFO L175 Difference]: Start difference. First operand has 697 places, 971 transitions, 17308 flow. Second operand 39 states and 2075 transitions. [2022-11-18 20:55:26,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 1047 transitions, 21241 flow [2022-11-18 20:55:28,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 1047 transitions, 20774 flow, removed 117 selfloop flow, removed 30 redundant places. [2022-11-18 20:55:28,571 INFO L231 Difference]: Finished difference. Result has 708 places, 1002 transitions, 18197 flow [2022-11-18 20:55:28,571 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=16895, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=861, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18197, PETRI_PLACES=708, PETRI_TRANSITIONS=1002} [2022-11-18 20:55:28,572 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 620 predicate places. [2022-11-18 20:55:28,572 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 1002 transitions, 18197 flow [2022-11-18 20:55:28,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:28,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:28,572 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:28,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-11-18 20:55:28,572 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:55:28,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:28,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1115000266, now seen corresponding path program 172 times [2022-11-18 20:55:28,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:28,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519071055] [2022-11-18 20:55:28,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:28,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:29,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:29,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519071055] [2022-11-18 20:55:29,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519071055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:29,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:29,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:55:29,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469954543] [2022-11-18 20:55:29,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:29,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:55:29,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:29,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:55:29,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:55:29,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:55:29,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 1002 transitions, 18197 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:29,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:29,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:55:29,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:32,192 INFO L130 PetriNetUnfolder]: 748/2210 cut-off events. [2022-11-18 20:55:32,193 INFO L131 PetriNetUnfolder]: For 98163/98163 co-relation queries the response was YES. [2022-11-18 20:55:32,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22859 conditions, 2210 events. 748/2210 cut-off events. For 98163/98163 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16838 event pairs, 47 based on Foata normal form. 1/2208 useless extension candidates. Maximal degree in co-relation 22598. Up to 1660 conditions per place. [2022-11-18 20:55:32,254 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 867 selfloop transitions, 123 changer transitions 18/1047 dead transitions. [2022-11-18 20:55:32,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 1047 transitions, 21211 flow [2022-11-18 20:55:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:55:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:55:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1614 transitions. [2022-11-18 20:55:32,256 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5723404255319149 [2022-11-18 20:55:32,256 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1614 transitions. [2022-11-18 20:55:32,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1614 transitions. [2022-11-18 20:55:32,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:32,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1614 transitions. [2022-11-18 20:55:32,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.8) internal successors, (1614), 30 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:32,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:32,260 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:32,260 INFO L175 Difference]: Start difference. First operand has 708 places, 1002 transitions, 18197 flow. Second operand 30 states and 1614 transitions. [2022-11-18 20:55:32,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 1047 transitions, 21211 flow [2022-11-18 20:55:34,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 714 places, 1047 transitions, 20449 flow, removed 326 selfloop flow, removed 17 redundant places. [2022-11-18 20:55:34,152 INFO L231 Difference]: Finished difference. Result has 721 places, 1010 transitions, 18075 flow [2022-11-18 20:55:34,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17439, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18075, PETRI_PLACES=721, PETRI_TRANSITIONS=1010} [2022-11-18 20:55:34,153 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 633 predicate places. [2022-11-18 20:55:34,153 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 1010 transitions, 18075 flow [2022-11-18 20:55:34,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:34,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:34,154 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:34,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-11-18 20:55:34,154 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:55:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:34,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1507605220, now seen corresponding path program 173 times [2022-11-18 20:55:34,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:34,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836050390] [2022-11-18 20:55:34,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:34,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:34,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:34,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836050390] [2022-11-18 20:55:34,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836050390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:34,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:34,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:55:34,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088889234] [2022-11-18 20:55:34,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:34,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:55:34,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:34,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:55:34,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:55:34,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:55:34,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 1010 transitions, 18075 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:34,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:34,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:55:34,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:38,227 INFO L130 PetriNetUnfolder]: 757/2245 cut-off events. [2022-11-18 20:55:38,227 INFO L131 PetriNetUnfolder]: For 103391/103391 co-relation queries the response was YES. [2022-11-18 20:55:38,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23191 conditions, 2245 events. 757/2245 cut-off events. For 103391/103391 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17297 event pairs, 47 based on Foata normal form. 1/2243 useless extension candidates. Maximal degree in co-relation 22924. Up to 1473 conditions per place. [2022-11-18 20:55:38,315 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 718 selfloop transitions, 284 changer transitions 29/1070 dead transitions. [2022-11-18 20:55:38,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 1070 transitions, 21546 flow [2022-11-18 20:55:38,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:55:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 20:55:38,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2320 transitions. [2022-11-18 20:55:38,318 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5609284332688588 [2022-11-18 20:55:38,318 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2320 transitions. [2022-11-18 20:55:38,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2320 transitions. [2022-11-18 20:55:38,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:38,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2320 transitions. [2022-11-18 20:55:38,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.72727272727273) internal successors, (2320), 44 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:38,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:38,323 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:38,323 INFO L175 Difference]: Start difference. First operand has 721 places, 1010 transitions, 18075 flow. Second operand 44 states and 2320 transitions. [2022-11-18 20:55:38,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 1070 transitions, 21546 flow [2022-11-18 20:55:40,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 1070 transitions, 21023 flow, removed 175 selfloop flow, removed 25 redundant places. [2022-11-18 20:55:40,213 INFO L231 Difference]: Finished difference. Result has 744 places, 1016 transitions, 18494 flow [2022-11-18 20:55:40,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17576, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=18494, PETRI_PLACES=744, PETRI_TRANSITIONS=1016} [2022-11-18 20:55:40,213 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 656 predicate places. [2022-11-18 20:55:40,213 INFO L495 AbstractCegarLoop]: Abstraction has has 744 places, 1016 transitions, 18494 flow [2022-11-18 20:55:40,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:40,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:40,214 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:40,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-11-18 20:55:40,214 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:55:40,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash -682117680, now seen corresponding path program 174 times [2022-11-18 20:55:40,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:40,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199429835] [2022-11-18 20:55:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:40,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:40,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:40,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199429835] [2022-11-18 20:55:40,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199429835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:40,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:40,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:55:40,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530822363] [2022-11-18 20:55:40,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:40,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:55:40,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:40,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:55:40,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:55:40,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:55:40,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 1016 transitions, 18494 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:40,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:40,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:55:40,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:43,961 INFO L130 PetriNetUnfolder]: 750/2231 cut-off events. [2022-11-18 20:55:43,961 INFO L131 PetriNetUnfolder]: For 101504/101504 co-relation queries the response was YES. [2022-11-18 20:55:44,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23178 conditions, 2231 events. 750/2231 cut-off events. For 101504/101504 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 17124 event pairs, 47 based on Foata normal form. 1/2229 useless extension candidates. Maximal degree in co-relation 22907. Up to 1646 conditions per place. [2022-11-18 20:55:44,016 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 854 selfloop transitions, 153 changer transitions 18/1064 dead transitions. [2022-11-18 20:55:44,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 1064 transitions, 21680 flow [2022-11-18 20:55:44,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:55:44,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:55:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1872 transitions. [2022-11-18 20:55:44,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689969604863222 [2022-11-18 20:55:44,019 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1872 transitions. [2022-11-18 20:55:44,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1872 transitions. [2022-11-18 20:55:44,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:44,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1872 transitions. [2022-11-18 20:55:44,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.48571428571429) internal successors, (1872), 35 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:44,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:44,022 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:44,022 INFO L175 Difference]: Start difference. First operand has 744 places, 1016 transitions, 18494 flow. Second operand 35 states and 1872 transitions. [2022-11-18 20:55:44,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 1064 transitions, 21680 flow [2022-11-18 20:55:45,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 1064 transitions, 21264 flow, removed 80 selfloop flow, removed 36 redundant places. [2022-11-18 20:55:45,468 INFO L231 Difference]: Finished difference. Result has 743 places, 1024 transitions, 18823 flow [2022-11-18 20:55:45,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18100, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18823, PETRI_PLACES=743, PETRI_TRANSITIONS=1024} [2022-11-18 20:55:45,469 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 655 predicate places. [2022-11-18 20:55:45,469 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 1024 transitions, 18823 flow [2022-11-18 20:55:45,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:45,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:45,469 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:45,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-11-18 20:55:45,470 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:55:45,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:45,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1758491220, now seen corresponding path program 175 times [2022-11-18 20:55:45,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:45,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517141223] [2022-11-18 20:55:45,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:45,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:46,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:46,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517141223] [2022-11-18 20:55:46,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517141223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:46,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:46,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:55:46,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549601798] [2022-11-18 20:55:46,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:46,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:55:46,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:46,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:55:46,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:55:46,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:55:46,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 1024 transitions, 18823 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:46,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:46,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:55:46,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:49,080 INFO L130 PetriNetUnfolder]: 757/2248 cut-off events. [2022-11-18 20:55:49,080 INFO L131 PetriNetUnfolder]: For 105375/105375 co-relation queries the response was YES. [2022-11-18 20:55:49,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23583 conditions, 2248 events. 757/2248 cut-off events. For 105375/105375 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17267 event pairs, 50 based on Foata normal form. 1/2246 useless extension candidates. Maximal degree in co-relation 23311. Up to 1696 conditions per place. [2022-11-18 20:55:49,134 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 899 selfloop transitions, 120 changer transitions 20/1078 dead transitions. [2022-11-18 20:55:49,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 1078 transitions, 22079 flow [2022-11-18 20:55:49,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:55:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:55:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-18 20:55:49,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-18 20:55:49,136 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-18 20:55:49,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-18 20:55:49,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:49,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-18 20:55:49,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:49,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:49,140 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:49,140 INFO L175 Difference]: Start difference. First operand has 743 places, 1024 transitions, 18823 flow. Second operand 34 states and 1812 transitions. [2022-11-18 20:55:49,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 1078 transitions, 22079 flow [2022-11-18 20:55:51,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 746 places, 1078 transitions, 21591 flow, removed 171 selfloop flow, removed 25 redundant places. [2022-11-18 20:55:51,392 INFO L231 Difference]: Finished difference. Result has 757 places, 1039 transitions, 19093 flow [2022-11-18 20:55:51,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18384, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1024, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=912, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=19093, PETRI_PLACES=757, PETRI_TRANSITIONS=1039} [2022-11-18 20:55:51,393 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 669 predicate places. [2022-11-18 20:55:51,393 INFO L495 AbstractCegarLoop]: Abstraction has has 757 places, 1039 transitions, 19093 flow [2022-11-18 20:55:51,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:51,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:51,394 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:51,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-11-18 20:55:51,394 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:55:51,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:51,395 INFO L85 PathProgramCache]: Analyzing trace with hash 236371498, now seen corresponding path program 176 times [2022-11-18 20:55:51,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:51,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91336014] [2022-11-18 20:55:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:51,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:51,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:51,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91336014] [2022-11-18 20:55:51,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91336014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:51,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:51,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:55:51,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327671921] [2022-11-18 20:55:51,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:51,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:55:51,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:55:51,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:55:51,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:55:51,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 757 places, 1039 transitions, 19093 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:51,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:51,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:55:51,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:55,204 INFO L130 PetriNetUnfolder]: 763/2251 cut-off events. [2022-11-18 20:55:55,204 INFO L131 PetriNetUnfolder]: For 108242/108242 co-relation queries the response was YES. [2022-11-18 20:55:55,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23885 conditions, 2251 events. 763/2251 cut-off events. For 108242/108242 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17290 event pairs, 48 based on Foata normal form. 1/2250 useless extension candidates. Maximal degree in co-relation 23607. Up to 1677 conditions per place. [2022-11-18 20:55:55,299 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 893 selfloop transitions, 124 changer transitions 27/1083 dead transitions. [2022-11-18 20:55:55,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 787 places, 1083 transitions, 22245 flow [2022-11-18 20:55:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:55:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:55:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1950 transitions. [2022-11-18 20:55:55,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606670500287522 [2022-11-18 20:55:55,301 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1950 transitions. [2022-11-18 20:55:55,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1950 transitions. [2022-11-18 20:55:55,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:55,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1950 transitions. [2022-11-18 20:55:55,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.7027027027027) internal successors, (1950), 37 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:55,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:55,305 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:55,305 INFO L175 Difference]: Start difference. First operand has 757 places, 1039 transitions, 19093 flow. Second operand 37 states and 1950 transitions. [2022-11-18 20:55:55,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 787 places, 1083 transitions, 22245 flow [2022-11-18 20:55:56,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 1083 transitions, 21736 flow, removed 163 selfloop flow, removed 25 redundant places. [2022-11-18 20:55:56,579 INFO L231 Difference]: Finished difference. Result has 773 places, 1039 transitions, 19108 flow [2022-11-18 20:55:56,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18598, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=916, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=19108, PETRI_PLACES=773, PETRI_TRANSITIONS=1039} [2022-11-18 20:55:56,580 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 685 predicate places. [2022-11-18 20:55:56,581 INFO L495 AbstractCegarLoop]: Abstraction has has 773 places, 1039 transitions, 19108 flow [2022-11-18 20:55:56,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:56,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:56,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:56,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-11-18 20:55:56,582 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:55:56,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1080236758, now seen corresponding path program 177 times [2022-11-18 20:55:56,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:56,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515818054] [2022-11-18 20:55:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:56,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:57,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:57,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515818054] [2022-11-18 20:55:57,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515818054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:57,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:57,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:55:57,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612511870] [2022-11-18 20:55:57,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:57,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:55:57,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:57,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:55:57,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:55:57,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:55:57,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 1039 transitions, 19108 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:57,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:57,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:55:57,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:00,027 INFO L130 PetriNetUnfolder]: 751/2243 cut-off events. [2022-11-18 20:56:00,027 INFO L131 PetriNetUnfolder]: For 110067/110067 co-relation queries the response was YES. [2022-11-18 20:56:00,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23703 conditions, 2243 events. 751/2243 cut-off events. For 110067/110067 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17342 event pairs, 50 based on Foata normal form. 1/2241 useless extension candidates. Maximal degree in co-relation 23420. Up to 1687 conditions per place. [2022-11-18 20:56:00,090 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 894 selfloop transitions, 118 changer transitions 18/1069 dead transitions. [2022-11-18 20:56:00,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 1069 transitions, 21590 flow [2022-11-18 20:56:00,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:56:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:56:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1841 transitions. [2022-11-18 20:56:00,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5595744680851064 [2022-11-18 20:56:00,093 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1841 transitions. [2022-11-18 20:56:00,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1841 transitions. [2022-11-18 20:56:00,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:00,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1841 transitions. [2022-11-18 20:56:00,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.6) internal successors, (1841), 35 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:00,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:00,097 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:00,097 INFO L175 Difference]: Start difference. First operand has 773 places, 1039 transitions, 19108 flow. Second operand 35 states and 1841 transitions. [2022-11-18 20:56:00,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 1069 transitions, 21590 flow [2022-11-18 20:56:01,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 1069 transitions, 21101 flow, removed 146 selfloop flow, removed 33 redundant places. [2022-11-18 20:56:01,361 INFO L231 Difference]: Finished difference. Result has 773 places, 1036 transitions, 18856 flow [2022-11-18 20:56:01,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18633, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=921, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18856, PETRI_PLACES=773, PETRI_TRANSITIONS=1036} [2022-11-18 20:56:01,361 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 685 predicate places. [2022-11-18 20:56:01,361 INFO L495 AbstractCegarLoop]: Abstraction has has 773 places, 1036 transitions, 18856 flow [2022-11-18 20:56:01,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:01,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:01,362 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:01,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-11-18 20:56:01,362 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:56:01,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:01,362 INFO L85 PathProgramCache]: Analyzing trace with hash -907608988, now seen corresponding path program 178 times [2022-11-18 20:56:01,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:01,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895695695] [2022-11-18 20:56:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:01,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:01,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:01,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895695695] [2022-11-18 20:56:01,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895695695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:01,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:01,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:56:01,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805452774] [2022-11-18 20:56:01,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:01,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:56:01,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:01,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:56:01,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:56:01,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:56:01,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 1036 transitions, 18856 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:01,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:01,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:56:01,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:04,631 INFO L130 PetriNetUnfolder]: 769/2296 cut-off events. [2022-11-18 20:56:04,631 INFO L131 PetriNetUnfolder]: For 112103/112103 co-relation queries the response was YES. [2022-11-18 20:56:04,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24273 conditions, 2296 events. 769/2296 cut-off events. For 112103/112103 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17861 event pairs, 46 based on Foata normal form. 1/2294 useless extension candidates. Maximal degree in co-relation 23991. Up to 1701 conditions per place. [2022-11-18 20:56:04,698 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 910 selfloop transitions, 149 changer transitions 21/1119 dead transitions. [2022-11-18 20:56:04,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 796 places, 1119 transitions, 22870 flow [2022-11-18 20:56:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:56:04,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:56:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1715 transitions. [2022-11-18 20:56:04,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5701462765957447 [2022-11-18 20:56:04,701 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1715 transitions. [2022-11-18 20:56:04,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1715 transitions. [2022-11-18 20:56:04,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:04,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1715 transitions. [2022-11-18 20:56:04,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.59375) internal successors, (1715), 32 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:04,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:04,704 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:04,704 INFO L175 Difference]: Start difference. First operand has 773 places, 1036 transitions, 18856 flow. Second operand 32 states and 1715 transitions. [2022-11-18 20:56:04,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 796 places, 1119 transitions, 22870 flow [2022-11-18 20:56:06,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 760 places, 1119 transitions, 22535 flow, removed 21 selfloop flow, removed 36 redundant places. [2022-11-18 20:56:06,237 INFO L231 Difference]: Finished difference. Result has 769 places, 1067 transitions, 19664 flow [2022-11-18 20:56:06,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18541, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=19664, PETRI_PLACES=769, PETRI_TRANSITIONS=1067} [2022-11-18 20:56:06,237 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 681 predicate places. [2022-11-18 20:56:06,237 INFO L495 AbstractCegarLoop]: Abstraction has has 769 places, 1067 transitions, 19664 flow [2022-11-18 20:56:06,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:06,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:06,238 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:06,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-11-18 20:56:06,238 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:56:06,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:06,238 INFO L85 PathProgramCache]: Analyzing trace with hash 515317298, now seen corresponding path program 179 times [2022-11-18 20:56:06,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:06,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849052213] [2022-11-18 20:56:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:06,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:06,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:06,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849052213] [2022-11-18 20:56:06,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849052213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:06,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:06,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:56:06,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800571740] [2022-11-18 20:56:06,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:06,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:56:06,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:56:06,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:56:06,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:56:06,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 1067 transitions, 19664 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:06,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:06,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:56:06,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:09,569 INFO L130 PetriNetUnfolder]: 764/2290 cut-off events. [2022-11-18 20:56:09,569 INFO L131 PetriNetUnfolder]: For 114913/114913 co-relation queries the response was YES. [2022-11-18 20:56:09,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24426 conditions, 2290 events. 764/2290 cut-off events. For 114913/114913 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17772 event pairs, 45 based on Foata normal form. 1/2288 useless extension candidates. Maximal degree in co-relation 24143. Up to 1711 conditions per place. [2022-11-18 20:56:09,629 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 906 selfloop transitions, 150 changer transitions 20/1115 dead transitions. [2022-11-18 20:56:09,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 798 places, 1115 transitions, 22978 flow [2022-11-18 20:56:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:56:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:56:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1868 transitions. [2022-11-18 20:56:09,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5677811550151975 [2022-11-18 20:56:09,632 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1868 transitions. [2022-11-18 20:56:09,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1868 transitions. [2022-11-18 20:56:09,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:09,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1868 transitions. [2022-11-18 20:56:09,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.371428571428574) internal successors, (1868), 35 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:09,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:09,638 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:09,639 INFO L175 Difference]: Start difference. First operand has 769 places, 1067 transitions, 19664 flow. Second operand 35 states and 1868 transitions. [2022-11-18 20:56:09,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 798 places, 1115 transitions, 22978 flow [2022-11-18 20:56:10,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 774 places, 1115 transitions, 22342 flow, removed 240 selfloop flow, removed 24 redundant places. [2022-11-18 20:56:10,955 INFO L231 Difference]: Finished difference. Result has 784 places, 1076 transitions, 19782 flow [2022-11-18 20:56:10,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19084, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=19782, PETRI_PLACES=784, PETRI_TRANSITIONS=1076} [2022-11-18 20:56:10,956 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 696 predicate places. [2022-11-18 20:56:10,956 INFO L495 AbstractCegarLoop]: Abstraction has has 784 places, 1076 transitions, 19782 flow [2022-11-18 20:56:10,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:10,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:10,957 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:10,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-11-18 20:56:10,957 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:56:10,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:10,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1989530518, now seen corresponding path program 180 times [2022-11-18 20:56:10,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:10,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773729587] [2022-11-18 20:56:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:10,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:11,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:11,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773729587] [2022-11-18 20:56:11,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773729587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:11,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:11,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:56:11,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846965785] [2022-11-18 20:56:11,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:11,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:56:11,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:11,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:56:11,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:56:11,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:56:11,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 784 places, 1076 transitions, 19782 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:11,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:11,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:56:11,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:14,381 INFO L130 PetriNetUnfolder]: 780/2308 cut-off events. [2022-11-18 20:56:14,381 INFO L131 PetriNetUnfolder]: For 119861/119861 co-relation queries the response was YES. [2022-11-18 20:56:14,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24975 conditions, 2308 events. 780/2308 cut-off events. For 119861/119861 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17910 event pairs, 42 based on Foata normal form. 1/2306 useless extension candidates. Maximal degree in co-relation 24685. Up to 1653 conditions per place. [2022-11-18 20:56:14,444 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 887 selfloop transitions, 187 changer transitions 29/1142 dead transitions. [2022-11-18 20:56:14,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 812 places, 1142 transitions, 23570 flow [2022-11-18 20:56:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:56:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:56:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-18 20:56:14,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-18 20:56:14,447 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-18 20:56:14,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-18 20:56:14,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:14,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-18 20:56:14,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:14,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:14,452 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:14,452 INFO L175 Difference]: Start difference. First operand has 784 places, 1076 transitions, 19782 flow. Second operand 35 states and 1858 transitions. [2022-11-18 20:56:14,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 812 places, 1142 transitions, 23570 flow [2022-11-18 20:56:15,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 1142 transitions, 22948 flow, removed 202 selfloop flow, removed 27 redundant places. [2022-11-18 20:56:15,734 INFO L231 Difference]: Finished difference. Result has 796 places, 1092 transitions, 20296 flow [2022-11-18 20:56:15,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19186, PETRI_DIFFERENCE_MINUEND_PLACES=751, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=20296, PETRI_PLACES=796, PETRI_TRANSITIONS=1092} [2022-11-18 20:56:15,734 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 708 predicate places. [2022-11-18 20:56:15,735 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 1092 transitions, 20296 flow [2022-11-18 20:56:15,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:15,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:15,735 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:15,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-11-18 20:56:15,735 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:56:15,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:15,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1403062422, now seen corresponding path program 181 times [2022-11-18 20:56:15,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:15,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203233768] [2022-11-18 20:56:15,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:15,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:16,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:16,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203233768] [2022-11-18 20:56:16,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203233768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:16,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:16,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:56:16,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324339706] [2022-11-18 20:56:16,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:16,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:56:16,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:16,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:56:16,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:56:16,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:56:16,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 1092 transitions, 20296 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:16,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:16,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:56:16,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:19,000 INFO L130 PetriNetUnfolder]: 765/2291 cut-off events. [2022-11-18 20:56:19,000 INFO L131 PetriNetUnfolder]: For 117160/117160 co-relation queries the response was YES. [2022-11-18 20:56:19,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24647 conditions, 2291 events. 765/2291 cut-off events. For 117160/117160 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17895 event pairs, 41 based on Foata normal form. 1/2290 useless extension candidates. Maximal degree in co-relation 24355. Up to 1657 conditions per place. [2022-11-18 20:56:19,067 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 888 selfloop transitions, 169 changer transitions 30/1126 dead transitions. [2022-11-18 20:56:19,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1126 transitions, 22945 flow [2022-11-18 20:56:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:56:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:56:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1749 transitions. [2022-11-18 20:56:19,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-18 20:56:19,069 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1749 transitions. [2022-11-18 20:56:19,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1749 transitions. [2022-11-18 20:56:19,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:19,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1749 transitions. [2022-11-18 20:56:19,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:19,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:19,072 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:19,073 INFO L175 Difference]: Start difference. First operand has 796 places, 1092 transitions, 20296 flow. Second operand 33 states and 1749 transitions. [2022-11-18 20:56:19,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 1126 transitions, 22945 flow [2022-11-18 20:56:20,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 794 places, 1126 transitions, 22417 flow, removed 158 selfloop flow, removed 28 redundant places. [2022-11-18 20:56:20,416 INFO L231 Difference]: Finished difference. Result has 801 places, 1077 transitions, 19783 flow [2022-11-18 20:56:20,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19776, PETRI_DIFFERENCE_MINUEND_PLACES=762, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1092, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=923, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=19783, PETRI_PLACES=801, PETRI_TRANSITIONS=1077} [2022-11-18 20:56:20,417 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 713 predicate places. [2022-11-18 20:56:20,417 INFO L495 AbstractCegarLoop]: Abstraction has has 801 places, 1077 transitions, 19783 flow [2022-11-18 20:56:20,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:20,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:20,418 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:20,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-11-18 20:56:20,418 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:56:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:20,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2055406876, now seen corresponding path program 182 times [2022-11-18 20:56:20,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:20,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746724476] [2022-11-18 20:56:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:20,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:20,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:20,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746724476] [2022-11-18 20:56:20,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746724476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:20,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:20,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:56:20,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339765221] [2022-11-18 20:56:20,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:20,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:56:20,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:56:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:56:20,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:56:20,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 1077 transitions, 19783 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:20,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:20,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:56:20,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:23,541 INFO L130 PetriNetUnfolder]: 753/2256 cut-off events. [2022-11-18 20:56:23,541 INFO L131 PetriNetUnfolder]: For 116775/116775 co-relation queries the response was YES. [2022-11-18 20:56:23,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24281 conditions, 2256 events. 753/2256 cut-off events. For 116775/116775 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17481 event pairs, 46 based on Foata normal form. 1/2254 useless extension candidates. Maximal degree in co-relation 23987. Up to 1729 conditions per place. [2022-11-18 20:56:23,605 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 936 selfloop transitions, 113 changer transitions 22/1110 dead transitions. [2022-11-18 20:56:23,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 823 places, 1110 transitions, 22378 flow [2022-11-18 20:56:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:56:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:56:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1656 transitions. [2022-11-18 20:56:23,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5682910089224433 [2022-11-18 20:56:23,608 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1656 transitions. [2022-11-18 20:56:23,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1656 transitions. [2022-11-18 20:56:23,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:23,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1656 transitions. [2022-11-18 20:56:23,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.41935483870968) internal successors, (1656), 31 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:23,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:23,611 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:23,611 INFO L175 Difference]: Start difference. First operand has 801 places, 1077 transitions, 19783 flow. Second operand 31 states and 1656 transitions. [2022-11-18 20:56:23,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 823 places, 1110 transitions, 22378 flow [2022-11-18 20:56:25,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 788 places, 1110 transitions, 21807 flow, removed 39 selfloop flow, removed 35 redundant places. [2022-11-18 20:56:25,059 INFO L231 Difference]: Finished difference. Result has 796 places, 1070 transitions, 19443 flow [2022-11-18 20:56:25,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19222, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1077, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=964, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=19443, PETRI_PLACES=796, PETRI_TRANSITIONS=1070} [2022-11-18 20:56:25,060 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 708 predicate places. [2022-11-18 20:56:25,060 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 1070 transitions, 19443 flow [2022-11-18 20:56:25,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:25,061 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:25,061 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:25,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-11-18 20:56:25,061 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:56:25,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:25,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1453290080, now seen corresponding path program 183 times [2022-11-18 20:56:25,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:25,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927490848] [2022-11-18 20:56:25,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:25,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:25,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:25,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927490848] [2022-11-18 20:56:25,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927490848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:25,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:25,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:56:25,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408066372] [2022-11-18 20:56:25,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:25,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:56:25,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:25,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:56:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:56:25,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:56:25,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 1070 transitions, 19443 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:25,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:25,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:56:25,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:28,961 INFO L130 PetriNetUnfolder]: 767/2286 cut-off events. [2022-11-18 20:56:28,961 INFO L131 PetriNetUnfolder]: For 117251/117251 co-relation queries the response was YES. [2022-11-18 20:56:28,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24522 conditions, 2286 events. 767/2286 cut-off events. For 117251/117251 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17688 event pairs, 38 based on Foata normal form. 1/2285 useless extension candidates. Maximal degree in co-relation 24230. Up to 1506 conditions per place. [2022-11-18 20:56:29,008 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 830 selfloop transitions, 264 changer transitions 24/1157 dead transitions. [2022-11-18 20:56:29,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 826 places, 1157 transitions, 23529 flow [2022-11-18 20:56:29,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 20:56:29,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-18 20:56:29,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2221 transitions. [2022-11-18 20:56:29,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5625633232016211 [2022-11-18 20:56:29,011 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2221 transitions. [2022-11-18 20:56:29,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2221 transitions. [2022-11-18 20:56:29,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:29,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2221 transitions. [2022-11-18 20:56:29,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.88095238095238) internal successors, (2221), 42 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:29,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:29,015 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:29,015 INFO L175 Difference]: Start difference. First operand has 796 places, 1070 transitions, 19443 flow. Second operand 42 states and 2221 transitions. [2022-11-18 20:56:29,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 826 places, 1157 transitions, 23529 flow [2022-11-18 20:56:30,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 796 places, 1157 transitions, 23240 flow, removed 22 selfloop flow, removed 30 redundant places. [2022-11-18 20:56:30,363 INFO L231 Difference]: Finished difference. Result has 805 places, 1097 transitions, 20550 flow [2022-11-18 20:56:30,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19180, PETRI_DIFFERENCE_MINUEND_PLACES=755, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=818, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=20550, PETRI_PLACES=805, PETRI_TRANSITIONS=1097} [2022-11-18 20:56:30,364 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 717 predicate places. [2022-11-18 20:56:30,364 INFO L495 AbstractCegarLoop]: Abstraction has has 805 places, 1097 transitions, 20550 flow [2022-11-18 20:56:30,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:30,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:30,365 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:30,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-11-18 20:56:30,365 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:56:30,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:30,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1113130446, now seen corresponding path program 184 times [2022-11-18 20:56:30,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:30,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033363196] [2022-11-18 20:56:30,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:30,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:30,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:30,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:30,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033363196] [2022-11-18 20:56:30,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033363196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:30,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:30,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:56:30,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262024700] [2022-11-18 20:56:30,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:30,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:56:30,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:30,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:56:30,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:56:30,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:56:30,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 1097 transitions, 20550 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:30,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:30,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:56:30,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:33,935 INFO L130 PetriNetUnfolder]: 759/2273 cut-off events. [2022-11-18 20:56:33,935 INFO L131 PetriNetUnfolder]: For 120444/120444 co-relation queries the response was YES. [2022-11-18 20:56:33,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24715 conditions, 2273 events. 759/2273 cut-off events. For 120444/120444 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17633 event pairs, 48 based on Foata normal form. 1/2271 useless extension candidates. Maximal degree in co-relation 24423. Up to 1727 conditions per place. [2022-11-18 20:56:33,992 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 945 selfloop transitions, 123 changer transitions 21/1128 dead transitions. [2022-11-18 20:56:33,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 831 places, 1128 transitions, 23157 flow [2022-11-18 20:56:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:56:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:56:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1708 transitions. [2022-11-18 20:56:33,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5678191489361702 [2022-11-18 20:56:33,995 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1708 transitions. [2022-11-18 20:56:33,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1708 transitions. [2022-11-18 20:56:33,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:33,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1708 transitions. [2022-11-18 20:56:33,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.375) internal successors, (1708), 32 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:33,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:33,998 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:33,998 INFO L175 Difference]: Start difference. First operand has 805 places, 1097 transitions, 20550 flow. Second operand 32 states and 1708 transitions. [2022-11-18 20:56:33,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 831 places, 1128 transitions, 23157 flow [2022-11-18 20:56:35,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 801 places, 1128 transitions, 22643 flow, removed 161 selfloop flow, removed 30 redundant places. [2022-11-18 20:56:35,408 INFO L231 Difference]: Finished difference. Result has 809 places, 1090 transitions, 20292 flow [2022-11-18 20:56:35,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20046, PETRI_DIFFERENCE_MINUEND_PLACES=770, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1097, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=974, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=20292, PETRI_PLACES=809, PETRI_TRANSITIONS=1090} [2022-11-18 20:56:35,409 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 721 predicate places. [2022-11-18 20:56:35,409 INFO L495 AbstractCegarLoop]: Abstraction has has 809 places, 1090 transitions, 20292 flow [2022-11-18 20:56:35,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:35,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:35,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:35,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-11-18 20:56:35,410 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:56:35,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:35,410 INFO L85 PathProgramCache]: Analyzing trace with hash -128343728, now seen corresponding path program 185 times [2022-11-18 20:56:35,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:35,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644830475] [2022-11-18 20:56:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:35,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:35,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:35,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644830475] [2022-11-18 20:56:35,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644830475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:35,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:35,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:56:35,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637389041] [2022-11-18 20:56:35,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:35,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:56:35,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:35,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:56:35,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:56:35,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:56:35,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 1090 transitions, 20292 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:35,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:35,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:56:35,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:39,089 INFO L130 PetriNetUnfolder]: 762/2284 cut-off events. [2022-11-18 20:56:39,089 INFO L131 PetriNetUnfolder]: For 110537/110537 co-relation queries the response was YES. [2022-11-18 20:56:39,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24410 conditions, 2284 events. 762/2284 cut-off events. For 110537/110537 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17663 event pairs, 47 based on Foata normal form. 1/2282 useless extension candidates. Maximal degree in co-relation 24113. Up to 1682 conditions per place. [2022-11-18 20:56:39,144 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 890 selfloop transitions, 193 changer transitions 20/1142 dead transitions. [2022-11-18 20:56:39,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 838 places, 1142 transitions, 23768 flow [2022-11-18 20:56:39,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:56:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-18 20:56:39,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2174 transitions. [2022-11-18 20:56:39,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5640892579138558 [2022-11-18 20:56:39,146 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2174 transitions. [2022-11-18 20:56:39,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2174 transitions. [2022-11-18 20:56:39,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:39,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2174 transitions. [2022-11-18 20:56:39,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 53.02439024390244) internal successors, (2174), 41 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:39,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:39,150 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:39,150 INFO L175 Difference]: Start difference. First operand has 809 places, 1090 transitions, 20292 flow. Second operand 41 states and 2174 transitions. [2022-11-18 20:56:39,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 838 places, 1142 transitions, 23768 flow [2022-11-18 20:56:40,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 806 places, 1142 transitions, 23432 flow, removed 30 selfloop flow, removed 32 redundant places. [2022-11-18 20:56:40,549 INFO L231 Difference]: Finished difference. Result has 817 places, 1101 transitions, 20870 flow [2022-11-18 20:56:40,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19994, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1090, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=903, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=20870, PETRI_PLACES=817, PETRI_TRANSITIONS=1101} [2022-11-18 20:56:40,550 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 729 predicate places. [2022-11-18 20:56:40,550 INFO L495 AbstractCegarLoop]: Abstraction has has 817 places, 1101 transitions, 20870 flow [2022-11-18 20:56:40,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:40,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:40,550 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:40,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-11-18 20:56:40,550 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:56:40,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:40,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1481517968, now seen corresponding path program 186 times [2022-11-18 20:56:40,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:40,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105919672] [2022-11-18 20:56:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:41,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:41,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105919672] [2022-11-18 20:56:41,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105919672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:41,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:41,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:56:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441356602] [2022-11-18 20:56:41,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:41,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:56:41,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:41,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:56:41,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:56:41,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:56:41,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 817 places, 1101 transitions, 20870 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:41,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:56:41,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:44,127 INFO L130 PetriNetUnfolder]: 771/2284 cut-off events. [2022-11-18 20:56:44,127 INFO L131 PetriNetUnfolder]: For 115339/115339 co-relation queries the response was YES. [2022-11-18 20:56:44,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24996 conditions, 2284 events. 771/2284 cut-off events. For 115339/115339 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17704 event pairs, 46 based on Foata normal form. 1/2283 useless extension candidates. Maximal degree in co-relation 24698. Up to 1660 conditions per place. [2022-11-18 20:56:44,185 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 902 selfloop transitions, 187 changer transitions 30/1158 dead transitions. [2022-11-18 20:56:44,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 847 places, 1158 transitions, 24454 flow [2022-11-18 20:56:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:56:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:56:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1957 transitions. [2022-11-18 20:56:44,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626797009775734 [2022-11-18 20:56:44,188 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1957 transitions. [2022-11-18 20:56:44,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1957 transitions. [2022-11-18 20:56:44,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:44,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1957 transitions. [2022-11-18 20:56:44,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.891891891891895) internal successors, (1957), 37 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,191 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,191 INFO L175 Difference]: Start difference. First operand has 817 places, 1101 transitions, 20870 flow. Second operand 37 states and 1957 transitions. [2022-11-18 20:56:44,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 847 places, 1158 transitions, 24454 flow [2022-11-18 20:56:45,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 1158 transitions, 23828 flow, removed 180 selfloop flow, removed 31 redundant places. [2022-11-18 20:56:45,807 INFO L231 Difference]: Finished difference. Result has 826 places, 1107 transitions, 21120 flow [2022-11-18 20:56:45,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20270, PETRI_DIFFERENCE_MINUEND_PLACES=780, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=915, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=21120, PETRI_PLACES=826, PETRI_TRANSITIONS=1107} [2022-11-18 20:56:45,808 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 738 predicate places. [2022-11-18 20:56:45,808 INFO L495 AbstractCegarLoop]: Abstraction has has 826 places, 1107 transitions, 21120 flow [2022-11-18 20:56:45,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:45,809 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:45,809 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:45,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-11-18 20:56:45,810 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:56:45,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:45,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1756791472, now seen corresponding path program 187 times [2022-11-18 20:56:45,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:45,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634715201] [2022-11-18 20:56:45,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:45,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:46,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:46,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634715201] [2022-11-18 20:56:46,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634715201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:46,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:46,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:56:46,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233408721] [2022-11-18 20:56:46,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:46,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:56:46,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:56:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:56:46,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:56:46,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 826 places, 1107 transitions, 21120 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:46,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:46,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:56:46,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:49,280 INFO L130 PetriNetUnfolder]: 758/2264 cut-off events. [2022-11-18 20:56:49,280 INFO L131 PetriNetUnfolder]: For 108428/108428 co-relation queries the response was YES. [2022-11-18 20:56:49,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24494 conditions, 2264 events. 758/2264 cut-off events. For 108428/108428 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17545 event pairs, 52 based on Foata normal form. 1/2262 useless extension candidates. Maximal degree in co-relation 24194. Up to 1698 conditions per place. [2022-11-18 20:56:49,339 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 929 selfloop transitions, 150 changer transitions 21/1139 dead transitions. [2022-11-18 20:56:49,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 1139 transitions, 23775 flow [2022-11-18 20:56:49,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:56:49,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:56:49,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2015 transitions. [2022-11-18 20:56:49,341 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641097424412094 [2022-11-18 20:56:49,341 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2015 transitions. [2022-11-18 20:56:49,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2015 transitions. [2022-11-18 20:56:49,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:49,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2015 transitions. [2022-11-18 20:56:49,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 53.026315789473685) internal successors, (2015), 38 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:49,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:49,345 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:49,345 INFO L175 Difference]: Start difference. First operand has 826 places, 1107 transitions, 21120 flow. Second operand 38 states and 2015 transitions. [2022-11-18 20:56:49,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 1139 transitions, 23775 flow [2022-11-18 20:56:50,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 824 places, 1139 transitions, 23195 flow, removed 108 selfloop flow, removed 30 redundant places. [2022-11-18 20:56:50,776 INFO L231 Difference]: Finished difference. Result has 832 places, 1100 transitions, 20852 flow [2022-11-18 20:56:50,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20552, PETRI_DIFFERENCE_MINUEND_PLACES=787, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=957, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=20852, PETRI_PLACES=832, PETRI_TRANSITIONS=1100} [2022-11-18 20:56:50,777 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 744 predicate places. [2022-11-18 20:56:50,777 INFO L495 AbstractCegarLoop]: Abstraction has has 832 places, 1100 transitions, 20852 flow [2022-11-18 20:56:50,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:50,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:50,777 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:50,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-11-18 20:56:50,778 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:56:50,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:50,778 INFO L85 PathProgramCache]: Analyzing trace with hash 185541212, now seen corresponding path program 188 times [2022-11-18 20:56:50,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:50,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792451097] [2022-11-18 20:56:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:50,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:51,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:51,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792451097] [2022-11-18 20:56:51,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792451097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:51,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:51,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:56:51,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556003166] [2022-11-18 20:56:51,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:51,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:56:51,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:51,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:56:51,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:56:51,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:56:51,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 832 places, 1100 transitions, 20852 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:51,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:51,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:56:51,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:54,342 INFO L130 PetriNetUnfolder]: 800/2429 cut-off events. [2022-11-18 20:56:54,342 INFO L131 PetriNetUnfolder]: For 114538/114538 co-relation queries the response was YES. [2022-11-18 20:56:54,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25882 conditions, 2429 events. 800/2429 cut-off events. For 114538/114538 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19283 event pairs, 44 based on Foata normal form. 1/2427 useless extension candidates. Maximal degree in co-relation 25582. Up to 1764 conditions per place. [2022-11-18 20:56:54,413 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 972 selfloop transitions, 183 changer transitions 21/1215 dead transitions. [2022-11-18 20:56:54,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 857 places, 1215 transitions, 25681 flow [2022-11-18 20:56:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:56:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:56:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1974 transitions. [2022-11-18 20:56:54,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2022-11-18 20:56:54,415 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1974 transitions. [2022-11-18 20:56:54,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1974 transitions. [2022-11-18 20:56:54,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:54,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1974 transitions. [2022-11-18 20:56:54,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.351351351351354) internal successors, (1974), 37 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:54,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:54,419 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:54,419 INFO L175 Difference]: Start difference. First operand has 832 places, 1100 transitions, 20852 flow. Second operand 37 states and 1974 transitions. [2022-11-18 20:56:54,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 857 places, 1215 transitions, 25681 flow [2022-11-18 20:56:55,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 1215 transitions, 25275 flow, removed 24 selfloop flow, removed 39 redundant places. [2022-11-18 20:56:55,909 INFO L231 Difference]: Finished difference. Result has 830 places, 1166 transitions, 22597 flow [2022-11-18 20:56:55,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20478, PETRI_DIFFERENCE_MINUEND_PLACES=782, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=929, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22597, PETRI_PLACES=830, PETRI_TRANSITIONS=1166} [2022-11-18 20:56:55,910 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 742 predicate places. [2022-11-18 20:56:55,910 INFO L495 AbstractCegarLoop]: Abstraction has has 830 places, 1166 transitions, 22597 flow [2022-11-18 20:56:55,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:55,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:55,911 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:55,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-11-18 20:56:55,911 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:56:55,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:55,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1539390926, now seen corresponding path program 189 times [2022-11-18 20:56:55,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:55,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964058065] [2022-11-18 20:56:55,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:55,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:56,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:56,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964058065] [2022-11-18 20:56:56,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964058065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:56,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:56,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:56:56,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304305396] [2022-11-18 20:56:56,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:56,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:56:56,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:56,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:56:56,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:56:56,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:56:56,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 830 places, 1166 transitions, 22597 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:56,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:56,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:56:56,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:59,813 INFO L130 PetriNetUnfolder]: 793/2422 cut-off events. [2022-11-18 20:56:59,813 INFO L131 PetriNetUnfolder]: For 119783/119783 co-relation queries the response was YES. [2022-11-18 20:56:59,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26055 conditions, 2422 events. 793/2422 cut-off events. For 119783/119783 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19327 event pairs, 46 based on Foata normal form. 1/2421 useless extension candidates. Maximal degree in co-relation 25753. Up to 1840 conditions per place. [2022-11-18 20:56:59,899 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1032 selfloop transitions, 110 changer transitions 21/1202 dead transitions. [2022-11-18 20:56:59,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 1202 transitions, 25621 flow [2022-11-18 20:56:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:56:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:56:59,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1939 transitions. [2022-11-18 20:56:59,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5575043128234618 [2022-11-18 20:56:59,902 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1939 transitions. [2022-11-18 20:56:59,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1939 transitions. [2022-11-18 20:56:59,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:59,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1939 transitions. [2022-11-18 20:56:59,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.4054054054054) internal successors, (1939), 37 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:59,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:59,906 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:59,906 INFO L175 Difference]: Start difference. First operand has 830 places, 1166 transitions, 22597 flow. Second operand 37 states and 1939 transitions. [2022-11-18 20:56:59,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 1202 transitions, 25621 flow [2022-11-18 20:57:01,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 839 places, 1202 transitions, 24887 flow, removed 307 selfloop flow, removed 21 redundant places. [2022-11-18 20:57:01,632 INFO L231 Difference]: Finished difference. Result has 850 places, 1166 transitions, 22210 flow [2022-11-18 20:57:01,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21867, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1056, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22210, PETRI_PLACES=850, PETRI_TRANSITIONS=1166} [2022-11-18 20:57:01,632 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 762 predicate places. [2022-11-18 20:57:01,632 INFO L495 AbstractCegarLoop]: Abstraction has has 850 places, 1166 transitions, 22210 flow [2022-11-18 20:57:01,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:01,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:01,633 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:01,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-11-18 20:57:01,633 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:57:01,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1415515106, now seen corresponding path program 190 times [2022-11-18 20:57:01,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:01,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498144574] [2022-11-18 20:57:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:01,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:02,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:02,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498144574] [2022-11-18 20:57:02,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498144574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:02,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:02,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:57:02,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489498579] [2022-11-18 20:57:02,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:02,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:57:02,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:02,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:57:02,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:57:02,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:57:02,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 1166 transitions, 22210 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:02,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:02,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:57:02,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:05,948 INFO L130 PetriNetUnfolder]: 785/2403 cut-off events. [2022-11-18 20:57:05,948 INFO L131 PetriNetUnfolder]: For 119360/119360 co-relation queries the response was YES. [2022-11-18 20:57:06,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25626 conditions, 2403 events. 785/2403 cut-off events. For 119360/119360 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19132 event pairs, 47 based on Foata normal form. 1/2401 useless extension candidates. Maximal degree in co-relation 25314. Up to 1838 conditions per place. [2022-11-18 20:57:06,018 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1031 selfloop transitions, 79 changer transitions 40/1189 dead transitions. [2022-11-18 20:57:06,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 876 places, 1189 transitions, 24703 flow [2022-11-18 20:57:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:57:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:57:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1783 transitions. [2022-11-18 20:57:06,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5578848560700876 [2022-11-18 20:57:06,021 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1783 transitions. [2022-11-18 20:57:06,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1783 transitions. [2022-11-18 20:57:06,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:06,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1783 transitions. [2022-11-18 20:57:06,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.44117647058823) internal successors, (1783), 34 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:06,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:06,026 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:06,027 INFO L175 Difference]: Start difference. First operand has 850 places, 1166 transitions, 22210 flow. Second operand 34 states and 1783 transitions. [2022-11-18 20:57:06,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 876 places, 1189 transitions, 24703 flow [2022-11-18 20:57:07,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 842 places, 1189 transitions, 24397 flow, removed 53 selfloop flow, removed 34 redundant places. [2022-11-18 20:57:07,717 INFO L231 Difference]: Finished difference. Result has 846 places, 1135 transitions, 21279 flow [2022-11-18 20:57:07,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21912, PETRI_DIFFERENCE_MINUEND_PLACES=809, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1087, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=21279, PETRI_PLACES=846, PETRI_TRANSITIONS=1135} [2022-11-18 20:57:07,718 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 758 predicate places. [2022-11-18 20:57:07,718 INFO L495 AbstractCegarLoop]: Abstraction has has 846 places, 1135 transitions, 21279 flow [2022-11-18 20:57:07,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:07,719 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:07,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-11-18 20:57:07,719 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:57:07,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:07,719 INFO L85 PathProgramCache]: Analyzing trace with hash -319262602, now seen corresponding path program 191 times [2022-11-18 20:57:07,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:07,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553512063] [2022-11-18 20:57:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:07,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:08,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:08,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553512063] [2022-11-18 20:57:08,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553512063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:08,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:08,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:57:08,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486661745] [2022-11-18 20:57:08,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:08,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:57:08,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:08,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:57:08,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:57:08,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:57:08,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 846 places, 1135 transitions, 21279 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:08,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:08,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:57:08,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:11,704 INFO L130 PetriNetUnfolder]: 793/2413 cut-off events. [2022-11-18 20:57:11,705 INFO L131 PetriNetUnfolder]: For 121800/121800 co-relation queries the response was YES. [2022-11-18 20:57:11,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25708 conditions, 2413 events. 793/2413 cut-off events. For 121800/121800 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19267 event pairs, 49 based on Foata normal form. 1/2411 useless extension candidates. Maximal degree in co-relation 25400. Up to 1817 conditions per place. [2022-11-18 20:57:11,771 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 995 selfloop transitions, 125 changer transitions 22/1181 dead transitions. [2022-11-18 20:57:11,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 859 places, 1181 transitions, 24699 flow [2022-11-18 20:57:11,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:57:11,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:57:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1954 transitions. [2022-11-18 20:57:11,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5618171362852213 [2022-11-18 20:57:11,773 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1954 transitions. [2022-11-18 20:57:11,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1954 transitions. [2022-11-18 20:57:11,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:11,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1954 transitions. [2022-11-18 20:57:11,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.810810810810814) internal successors, (1954), 37 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:11,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:11,781 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:11,781 INFO L175 Difference]: Start difference. First operand has 846 places, 1135 transitions, 21279 flow. Second operand 37 states and 1954 transitions. [2022-11-18 20:57:11,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 859 places, 1181 transitions, 24699 flow [2022-11-18 20:57:13,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 821 places, 1181 transitions, 24265 flow, removed 84 selfloop flow, removed 38 redundant places. [2022-11-18 20:57:13,342 INFO L231 Difference]: Finished difference. Result has 832 places, 1145 transitions, 21504 flow [2022-11-18 20:57:13,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20861, PETRI_DIFFERENCE_MINUEND_PLACES=785, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1011, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=21504, PETRI_PLACES=832, PETRI_TRANSITIONS=1145} [2022-11-18 20:57:13,343 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 744 predicate places. [2022-11-18 20:57:13,343 INFO L495 AbstractCegarLoop]: Abstraction has has 832 places, 1145 transitions, 21504 flow [2022-11-18 20:57:13,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:13,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:13,343 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:13,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-11-18 20:57:13,344 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:57:13,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:13,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1361768090, now seen corresponding path program 192 times [2022-11-18 20:57:13,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:13,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591130578] [2022-11-18 20:57:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:13,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:13,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:13,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591130578] [2022-11-18 20:57:13,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591130578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:13,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:13,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:57:13,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279710236] [2022-11-18 20:57:13,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:13,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:57:13,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:13,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:57:13,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:57:13,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:57:13,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 832 places, 1145 transitions, 21504 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:13,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:13,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:57:13,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:17,250 INFO L130 PetriNetUnfolder]: 787/2411 cut-off events. [2022-11-18 20:57:17,250 INFO L131 PetriNetUnfolder]: For 124172/124172 co-relation queries the response was YES. [2022-11-18 20:57:17,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25751 conditions, 2411 events. 787/2411 cut-off events. For 124172/124172 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19285 event pairs, 48 based on Foata normal form. 1/2409 useless extension candidates. Maximal degree in co-relation 25445. Up to 1732 conditions per place. [2022-11-18 20:57:17,310 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 955 selfloop transitions, 179 changer transitions 28/1201 dead transitions. [2022-11-18 20:57:17,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 1201 transitions, 25157 flow [2022-11-18 20:57:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:57:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:57:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1871 transitions. [2022-11-18 20:57:17,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568693009118541 [2022-11-18 20:57:17,313 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1871 transitions. [2022-11-18 20:57:17,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1871 transitions. [2022-11-18 20:57:17,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:17,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1871 transitions. [2022-11-18 20:57:17,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.457142857142856) internal successors, (1871), 35 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:17,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:17,316 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:17,316 INFO L175 Difference]: Start difference. First operand has 832 places, 1145 transitions, 21504 flow. Second operand 35 states and 1871 transitions. [2022-11-18 20:57:17,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 1201 transitions, 25157 flow [2022-11-18 20:57:18,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 1201 transitions, 24752 flow, removed 116 selfloop flow, removed 31 redundant places. [2022-11-18 20:57:18,783 INFO L231 Difference]: Finished difference. Result has 836 places, 1146 transitions, 21794 flow [2022-11-18 20:57:18,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21115, PETRI_DIFFERENCE_MINUEND_PLACES=795, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=970, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=21794, PETRI_PLACES=836, PETRI_TRANSITIONS=1146} [2022-11-18 20:57:18,784 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 748 predicate places. [2022-11-18 20:57:18,784 INFO L495 AbstractCegarLoop]: Abstraction has has 836 places, 1146 transitions, 21794 flow [2022-11-18 20:57:18,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:18,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:18,785 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:18,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-11-18 20:57:18,785 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:57:18,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:18,785 INFO L85 PathProgramCache]: Analyzing trace with hash -886615148, now seen corresponding path program 193 times [2022-11-18 20:57:18,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:18,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773555994] [2022-11-18 20:57:18,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:18,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:19,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:19,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773555994] [2022-11-18 20:57:19,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773555994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:19,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:19,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:57:19,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652480227] [2022-11-18 20:57:19,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:19,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:57:19,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:19,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:57:19,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:57:19,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:57:19,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 836 places, 1146 transitions, 21794 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:19,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:19,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:57:19,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:22,693 INFO L130 PetriNetUnfolder]: 785/2379 cut-off events. [2022-11-18 20:57:22,693 INFO L131 PetriNetUnfolder]: For 127641/127641 co-relation queries the response was YES. [2022-11-18 20:57:22,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25954 conditions, 2379 events. 785/2379 cut-off events. For 127641/127641 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18855 event pairs, 48 based on Foata normal form. 1/2377 useless extension candidates. Maximal degree in co-relation 25647. Up to 1755 conditions per place. [2022-11-18 20:57:22,757 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 988 selfloop transitions, 160 changer transitions 18/1205 dead transitions. [2022-11-18 20:57:22,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 864 places, 1205 transitions, 25781 flow [2022-11-18 20:57:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:57:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:57:22,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1817 transitions. [2022-11-18 20:57:22,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568523153942428 [2022-11-18 20:57:22,759 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1817 transitions. [2022-11-18 20:57:22,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1817 transitions. [2022-11-18 20:57:22,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:22,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1817 transitions. [2022-11-18 20:57:22,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.44117647058823) internal successors, (1817), 34 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:22,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:22,763 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:22,763 INFO L175 Difference]: Start difference. First operand has 836 places, 1146 transitions, 21794 flow. Second operand 34 states and 1817 transitions. [2022-11-18 20:57:22,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 864 places, 1205 transitions, 25781 flow [2022-11-18 20:57:24,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 1205 transitions, 25030 flow, removed 288 selfloop flow, removed 28 redundant places. [2022-11-18 20:57:24,390 INFO L231 Difference]: Finished difference. Result has 843 places, 1160 transitions, 22200 flow [2022-11-18 20:57:24,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21317, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22200, PETRI_PLACES=843, PETRI_TRANSITIONS=1160} [2022-11-18 20:57:24,391 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 755 predicate places. [2022-11-18 20:57:24,391 INFO L495 AbstractCegarLoop]: Abstraction has has 843 places, 1160 transitions, 22200 flow [2022-11-18 20:57:24,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:24,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:24,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:24,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-11-18 20:57:24,391 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:57:24,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:24,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1194990230, now seen corresponding path program 194 times [2022-11-18 20:57:24,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:24,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794239611] [2022-11-18 20:57:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:24,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:24,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:24,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794239611] [2022-11-18 20:57:24,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794239611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:24,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:24,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:57:24,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956499705] [2022-11-18 20:57:24,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:24,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:57:24,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:24,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:57:24,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:57:24,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:57:24,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 1160 transitions, 22200 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:24,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:24,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:57:24,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:28,646 INFO L130 PetriNetUnfolder]: 784/2382 cut-off events. [2022-11-18 20:57:28,647 INFO L131 PetriNetUnfolder]: For 116847/116847 co-relation queries the response was YES. [2022-11-18 20:57:28,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25553 conditions, 2382 events. 784/2382 cut-off events. For 116847/116847 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18876 event pairs, 50 based on Foata normal form. 1/2380 useless extension candidates. Maximal degree in co-relation 25243. Up to 1767 conditions per place. [2022-11-18 20:57:28,710 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1003 selfloop transitions, 140 changer transitions 21/1203 dead transitions. [2022-11-18 20:57:28,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 873 places, 1203 transitions, 25285 flow [2022-11-18 20:57:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:57:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:57:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-11-18 20:57:28,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-11-18 20:57:28,713 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-11-18 20:57:28,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-11-18 20:57:28,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:28,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-11-18 20:57:28,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:28,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:28,719 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:28,719 INFO L175 Difference]: Start difference. First operand has 843 places, 1160 transitions, 22200 flow. Second operand 36 states and 1912 transitions. [2022-11-18 20:57:28,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 873 places, 1203 transitions, 25285 flow [2022-11-18 20:57:30,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 847 places, 1203 transitions, 24752 flow, removed 170 selfloop flow, removed 26 redundant places. [2022-11-18 20:57:30,413 INFO L231 Difference]: Finished difference. Result has 858 places, 1160 transitions, 22019 flow [2022-11-18 20:57:30,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21689, PETRI_DIFFERENCE_MINUEND_PLACES=812, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1021, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=22019, PETRI_PLACES=858, PETRI_TRANSITIONS=1160} [2022-11-18 20:57:30,414 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 770 predicate places. [2022-11-18 20:57:30,414 INFO L495 AbstractCegarLoop]: Abstraction has has 858 places, 1160 transitions, 22019 flow [2022-11-18 20:57:30,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:30,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:30,414 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:30,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-11-18 20:57:30,414 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:57:30,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:30,414 INFO L85 PathProgramCache]: Analyzing trace with hash -433775950, now seen corresponding path program 195 times [2022-11-18 20:57:30,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:30,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072699329] [2022-11-18 20:57:30,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:30,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:30,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:30,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072699329] [2022-11-18 20:57:30,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072699329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:30,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:30,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:57:30,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62146885] [2022-11-18 20:57:30,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:30,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:57:30,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:57:30,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:57:30,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:57:30,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 1160 transitions, 22019 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:30,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:30,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:57:30,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:34,419 INFO L130 PetriNetUnfolder]: 789/2395 cut-off events. [2022-11-18 20:57:34,419 INFO L131 PetriNetUnfolder]: For 117921/117921 co-relation queries the response was YES. [2022-11-18 20:57:34,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25787 conditions, 2395 events. 789/2395 cut-off events. For 117921/117921 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19102 event pairs, 47 based on Foata normal form. 1/2393 useless extension candidates. Maximal degree in co-relation 25470. Up to 1824 conditions per place. [2022-11-18 20:57:34,477 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1030 selfloop transitions, 120 changer transitions 20/1209 dead transitions. [2022-11-18 20:57:34,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 882 places, 1209 transitions, 25571 flow [2022-11-18 20:57:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:57:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:57:34,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1817 transitions. [2022-11-18 20:57:34,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568523153942428 [2022-11-18 20:57:34,479 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1817 transitions. [2022-11-18 20:57:34,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1817 transitions. [2022-11-18 20:57:34,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:34,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1817 transitions. [2022-11-18 20:57:34,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.44117647058823) internal successors, (1817), 34 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:34,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:34,485 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:34,485 INFO L175 Difference]: Start difference. First operand has 858 places, 1160 transitions, 22019 flow. Second operand 34 states and 1817 transitions. [2022-11-18 20:57:34,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 882 places, 1209 transitions, 25571 flow [2022-11-18 20:57:36,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 1209 transitions, 25214 flow, removed 23 selfloop flow, removed 34 redundant places. [2022-11-18 20:57:36,246 INFO L231 Difference]: Finished difference. Result has 855 places, 1169 transitions, 22329 flow [2022-11-18 20:57:36,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21680, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1046, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22329, PETRI_PLACES=855, PETRI_TRANSITIONS=1169} [2022-11-18 20:57:36,246 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 767 predicate places. [2022-11-18 20:57:36,246 INFO L495 AbstractCegarLoop]: Abstraction has has 855 places, 1169 transitions, 22329 flow [2022-11-18 20:57:36,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:36,247 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:36,247 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:36,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-11-18 20:57:36,247 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:57:36,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:36,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1708592440, now seen corresponding path program 196 times [2022-11-18 20:57:36,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:36,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994105132] [2022-11-18 20:57:36,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:36,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:36,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:36,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994105132] [2022-11-18 20:57:36,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994105132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:36,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:36,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:57:36,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138761590] [2022-11-18 20:57:36,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:36,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:57:36,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:36,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:57:36,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:57:36,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:57:36,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 855 places, 1169 transitions, 22329 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:36,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:36,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:57:36,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:40,266 INFO L130 PetriNetUnfolder]: 794/2416 cut-off events. [2022-11-18 20:57:40,266 INFO L131 PetriNetUnfolder]: For 124711/124711 co-relation queries the response was YES. [2022-11-18 20:57:40,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26144 conditions, 2416 events. 794/2416 cut-off events. For 124711/124711 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19301 event pairs, 44 based on Foata normal form. 1/2414 useless extension candidates. Maximal degree in co-relation 25830. Up to 1829 conditions per place. [2022-11-18 20:57:40,506 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1029 selfloop transitions, 133 changer transitions 22/1223 dead transitions. [2022-11-18 20:57:40,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 889 places, 1223 transitions, 26115 flow [2022-11-18 20:57:40,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:57:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:57:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2121 transitions. [2022-11-18 20:57:40,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5640957446808511 [2022-11-18 20:57:40,508 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2121 transitions. [2022-11-18 20:57:40,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2121 transitions. [2022-11-18 20:57:40,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:40,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2121 transitions. [2022-11-18 20:57:40,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.025) internal successors, (2121), 40 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:40,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:40,512 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:40,512 INFO L175 Difference]: Start difference. First operand has 855 places, 1169 transitions, 22329 flow. Second operand 40 states and 2121 transitions. [2022-11-18 20:57:40,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 889 places, 1223 transitions, 26115 flow [2022-11-18 20:57:42,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 862 places, 1223 transitions, 25647 flow, removed 145 selfloop flow, removed 27 redundant places. [2022-11-18 20:57:42,319 INFO L231 Difference]: Finished difference. Result has 874 places, 1182 transitions, 22713 flow [2022-11-18 20:57:42,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21891, PETRI_DIFFERENCE_MINUEND_PLACES=823, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1042, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=22713, PETRI_PLACES=874, PETRI_TRANSITIONS=1182} [2022-11-18 20:57:42,320 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 786 predicate places. [2022-11-18 20:57:42,320 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 1182 transitions, 22713 flow [2022-11-18 20:57:42,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:42,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:42,320 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:42,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-11-18 20:57:42,320 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:57:42,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:42,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1346733674, now seen corresponding path program 197 times [2022-11-18 20:57:42,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:42,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079333980] [2022-11-18 20:57:42,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:42,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:42,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:42,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079333980] [2022-11-18 20:57:42,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079333980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:42,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:42,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:57:42,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288298347] [2022-11-18 20:57:42,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:42,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:57:42,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:42,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:57:42,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:57:42,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:57:42,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 1182 transitions, 22713 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:42,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:42,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:57:42,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:46,437 INFO L130 PetriNetUnfolder]: 789/2402 cut-off events. [2022-11-18 20:57:46,437 INFO L131 PetriNetUnfolder]: For 123716/123716 co-relation queries the response was YES. [2022-11-18 20:57:46,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25988 conditions, 2402 events. 789/2402 cut-off events. For 123716/123716 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19149 event pairs, 46 based on Foata normal form. 1/2400 useless extension candidates. Maximal degree in co-relation 25667. Up to 1827 conditions per place. [2022-11-18 20:57:46,521 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1032 selfloop transitions, 118 changer transitions 26/1215 dead transitions. [2022-11-18 20:57:46,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 1215 transitions, 25600 flow [2022-11-18 20:57:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:57:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:57:46,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1963 transitions. [2022-11-18 20:57:46,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644048303622772 [2022-11-18 20:57:46,524 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1963 transitions. [2022-11-18 20:57:46,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1963 transitions. [2022-11-18 20:57:46,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:46,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1963 transitions. [2022-11-18 20:57:46,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.054054054054056) internal successors, (1963), 37 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:46,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:46,528 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:46,528 INFO L175 Difference]: Start difference. First operand has 874 places, 1182 transitions, 22713 flow. Second operand 37 states and 1963 transitions. [2022-11-18 20:57:46,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 1215 transitions, 25600 flow [2022-11-18 20:57:48,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 877 places, 1215 transitions, 24967 flow, removed 234 selfloop flow, removed 27 redundant places. [2022-11-18 20:57:48,663 INFO L231 Difference]: Finished difference. Result has 884 places, 1174 transitions, 22327 flow [2022-11-18 20:57:48,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22146, PETRI_DIFFERENCE_MINUEND_PLACES=841, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1064, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22327, PETRI_PLACES=884, PETRI_TRANSITIONS=1174} [2022-11-18 20:57:48,663 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 796 predicate places. [2022-11-18 20:57:48,664 INFO L495 AbstractCegarLoop]: Abstraction has has 884 places, 1174 transitions, 22327 flow [2022-11-18 20:57:48,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:48,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:48,664 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:48,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-11-18 20:57:48,664 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:57:48,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:48,664 INFO L85 PathProgramCache]: Analyzing trace with hash 537913260, now seen corresponding path program 198 times [2022-11-18 20:57:48,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:48,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788300884] [2022-11-18 20:57:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:48,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:49,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:49,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788300884] [2022-11-18 20:57:49,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788300884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:49,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:49,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:57:49,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588306801] [2022-11-18 20:57:49,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:49,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:57:49,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:49,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:57:49,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:57:49,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:57:49,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 884 places, 1174 transitions, 22327 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:49,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:49,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:57:49,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:52,556 INFO L130 PetriNetUnfolder]: 800/2439 cut-off events. [2022-11-18 20:57:52,556 INFO L131 PetriNetUnfolder]: For 122422/122422 co-relation queries the response was YES. [2022-11-18 20:57:52,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26271 conditions, 2439 events. 800/2439 cut-off events. For 122422/122422 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19548 event pairs, 44 based on Foata normal form. 1/2437 useless extension candidates. Maximal degree in co-relation 25949. Up to 1837 conditions per place. [2022-11-18 20:57:52,631 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1041 selfloop transitions, 130 changer transitions 29/1239 dead transitions. [2022-11-18 20:57:52,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 1239 transitions, 26078 flow [2022-11-18 20:57:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:57:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:57:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1767 transitions. [2022-11-18 20:57:52,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5696324951644101 [2022-11-18 20:57:52,634 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1767 transitions. [2022-11-18 20:57:52,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1767 transitions. [2022-11-18 20:57:52,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:52,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1767 transitions. [2022-11-18 20:57:52,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.54545454545455) internal successors, (1767), 33 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:52,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:52,637 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:52,637 INFO L175 Difference]: Start difference. First operand has 884 places, 1174 transitions, 22327 flow. Second operand 33 states and 1767 transitions. [2022-11-18 20:57:52,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 1239 transitions, 26078 flow [2022-11-18 20:57:54,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 866 places, 1239 transitions, 25733 flow, removed 27 selfloop flow, removed 39 redundant places. [2022-11-18 20:57:54,564 INFO L231 Difference]: Finished difference. Result has 876 places, 1191 transitions, 22821 flow [2022-11-18 20:57:54,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22014, PETRI_DIFFERENCE_MINUEND_PLACES=834, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1047, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=22821, PETRI_PLACES=876, PETRI_TRANSITIONS=1191} [2022-11-18 20:57:54,565 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 788 predicate places. [2022-11-18 20:57:54,565 INFO L495 AbstractCegarLoop]: Abstraction has has 876 places, 1191 transitions, 22821 flow [2022-11-18 20:57:54,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:54,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:54,566 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:54,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-11-18 20:57:54,566 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:57:54,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:54,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1249135654, now seen corresponding path program 199 times [2022-11-18 20:57:54,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:54,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145761644] [2022-11-18 20:57:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:54,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:55,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:55,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145761644] [2022-11-18 20:57:55,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145761644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:55,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:55,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:57:55,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991064509] [2022-11-18 20:57:55,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:55,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:57:55,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:55,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:57:55,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:57:55,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:57:55,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 1191 transitions, 22821 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:55,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:55,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:57:55,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:58,230 INFO L130 PetriNetUnfolder]: 794/2423 cut-off events. [2022-11-18 20:57:58,231 INFO L131 PetriNetUnfolder]: For 122162/122162 co-relation queries the response was YES. [2022-11-18 20:57:58,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26198 conditions, 2423 events. 794/2423 cut-off events. For 122162/122162 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19391 event pairs, 40 based on Foata normal form. 1/2421 useless extension candidates. Maximal degree in co-relation 25876. Up to 1756 conditions per place. [2022-11-18 20:57:58,298 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 989 selfloop transitions, 174 changer transitions 33/1235 dead transitions. [2022-11-18 20:57:58,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 1235 transitions, 26109 flow [2022-11-18 20:57:58,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:57:58,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:57:58,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2020 transitions. [2022-11-18 20:57:58,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5655095184770437 [2022-11-18 20:57:58,300 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2020 transitions. [2022-11-18 20:57:58,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2020 transitions. [2022-11-18 20:57:58,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:58,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2020 transitions. [2022-11-18 20:57:58,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 53.1578947368421) internal successors, (2020), 38 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:58,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:58,303 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:58,303 INFO L175 Difference]: Start difference. First operand has 876 places, 1191 transitions, 22821 flow. Second operand 38 states and 2020 transitions. [2022-11-18 20:57:58,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 1235 transitions, 26109 flow [2022-11-18 20:58:00,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 1235 transitions, 25718 flow, removed 103 selfloop flow, removed 24 redundant places. [2022-11-18 20:58:00,119 INFO L231 Difference]: Finished difference. Result has 891 places, 1186 transitions, 22871 flow [2022-11-18 20:58:00,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22456, PETRI_DIFFERENCE_MINUEND_PLACES=844, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1021, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=22871, PETRI_PLACES=891, PETRI_TRANSITIONS=1186} [2022-11-18 20:58:00,119 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 803 predicate places. [2022-11-18 20:58:00,119 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 1186 transitions, 22871 flow [2022-11-18 20:58:00,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:00,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:00,120 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:00,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-11-18 20:58:00,120 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:58:00,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1049249256, now seen corresponding path program 200 times [2022-11-18 20:58:00,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:00,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488012714] [2022-11-18 20:58:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:00,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:00,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:00,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488012714] [2022-11-18 20:58:00,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488012714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:00,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:00,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:58:00,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918203032] [2022-11-18 20:58:00,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:00,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:58:00,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:00,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:58:00,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:58:00,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:58:00,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 1186 transitions, 22871 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:00,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:00,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:58:00,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:03,684 INFO L130 PetriNetUnfolder]: 780/2385 cut-off events. [2022-11-18 20:58:03,684 INFO L131 PetriNetUnfolder]: For 117469/117469 co-relation queries the response was YES. [2022-11-18 20:58:03,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25781 conditions, 2385 events. 780/2385 cut-off events. For 117469/117469 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18980 event pairs, 43 based on Foata normal form. 1/2383 useless extension candidates. Maximal degree in co-relation 25454. Up to 1828 conditions per place. [2022-11-18 20:58:03,757 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1048 selfloop transitions, 115 changer transitions 18/1220 dead transitions. [2022-11-18 20:58:03,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 913 places, 1220 transitions, 25651 flow [2022-11-18 20:58:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:58:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:58:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1703 transitions. [2022-11-18 20:58:03,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.566156914893617 [2022-11-18 20:58:03,759 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1703 transitions. [2022-11-18 20:58:03,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1703 transitions. [2022-11-18 20:58:03,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:03,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1703 transitions. [2022-11-18 20:58:03,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.21875) internal successors, (1703), 32 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:03,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:03,762 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:03,762 INFO L175 Difference]: Start difference. First operand has 891 places, 1186 transitions, 22871 flow. Second operand 32 states and 1703 transitions. [2022-11-18 20:58:03,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 913 places, 1220 transitions, 25651 flow [2022-11-18 20:58:05,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1220 transitions, 25104 flow, removed 70 selfloop flow, removed 35 redundant places. [2022-11-18 20:58:05,659 INFO L231 Difference]: Finished difference. Result has 886 places, 1185 transitions, 22621 flow [2022-11-18 20:58:05,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22344, PETRI_DIFFERENCE_MINUEND_PLACES=847, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1071, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=22621, PETRI_PLACES=886, PETRI_TRANSITIONS=1185} [2022-11-18 20:58:05,660 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 798 predicate places. [2022-11-18 20:58:05,660 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 1185 transitions, 22621 flow [2022-11-18 20:58:05,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:05,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:05,660 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:05,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-11-18 20:58:05,660 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:58:05,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:05,661 INFO L85 PathProgramCache]: Analyzing trace with hash 239049674, now seen corresponding path program 201 times [2022-11-18 20:58:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:05,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966592696] [2022-11-18 20:58:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:05,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:06,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:06,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966592696] [2022-11-18 20:58:06,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966592696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:06,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:06,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:58:06,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26810973] [2022-11-18 20:58:06,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:06,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:58:06,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:58:06,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:58:06,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:58:06,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 1185 transitions, 22621 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:06,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:06,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:58:06,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:09,597 INFO L130 PetriNetUnfolder]: 803/2504 cut-off events. [2022-11-18 20:58:09,597 INFO L131 PetriNetUnfolder]: For 117687/117687 co-relation queries the response was YES. [2022-11-18 20:58:09,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26489 conditions, 2504 events. 803/2504 cut-off events. For 117687/117687 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 20353 event pairs, 46 based on Foata normal form. 1/2502 useless extension candidates. Maximal degree in co-relation 26164. Up to 1692 conditions per place. [2022-11-18 20:58:09,670 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 960 selfloop transitions, 226 changer transitions 52/1277 dead transitions. [2022-11-18 20:58:09,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 914 places, 1277 transitions, 27240 flow [2022-11-18 20:58:09,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:58:09,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:58:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1856 transitions. [2022-11-18 20:58:09,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641337386018237 [2022-11-18 20:58:09,673 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1856 transitions. [2022-11-18 20:58:09,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1856 transitions. [2022-11-18 20:58:09,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:09,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1856 transitions. [2022-11-18 20:58:09,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.02857142857143) internal successors, (1856), 35 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:09,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:09,679 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:09,679 INFO L175 Difference]: Start difference. First operand has 886 places, 1185 transitions, 22621 flow. Second operand 35 states and 1856 transitions. [2022-11-18 20:58:09,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 914 places, 1277 transitions, 27240 flow [2022-11-18 20:58:11,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 882 places, 1277 transitions, 26846 flow, removed 48 selfloop flow, removed 32 redundant places. [2022-11-18 20:58:11,712 INFO L231 Difference]: Finished difference. Result has 891 places, 1200 transitions, 23604 flow [2022-11-18 20:58:11,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22251, PETRI_DIFFERENCE_MINUEND_PLACES=848, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=966, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=23604, PETRI_PLACES=891, PETRI_TRANSITIONS=1200} [2022-11-18 20:58:11,712 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 803 predicate places. [2022-11-18 20:58:11,712 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 1200 transitions, 23604 flow [2022-11-18 20:58:11,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:11,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:11,713 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:11,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-11-18 20:58:11,713 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:58:11,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:11,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1544945088, now seen corresponding path program 202 times [2022-11-18 20:58:11,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:11,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698773516] [2022-11-18 20:58:11,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:11,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:12,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:12,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698773516] [2022-11-18 20:58:12,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698773516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:12,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:12,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:58:12,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484689611] [2022-11-18 20:58:12,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:12,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:58:12,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:12,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:58:12,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:58:12,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:58:12,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 1200 transitions, 23604 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:12,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:12,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:58:12,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:16,577 INFO L130 PetriNetUnfolder]: 849/2666 cut-off events. [2022-11-18 20:58:16,577 INFO L131 PetriNetUnfolder]: For 139921/139921 co-relation queries the response was YES. [2022-11-18 20:58:16,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28875 conditions, 2666 events. 849/2666 cut-off events. For 139921/139921 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22204 event pairs, 41 based on Foata normal form. 1/2664 useless extension candidates. Maximal degree in co-relation 28549. Up to 1756 conditions per place. [2022-11-18 20:58:16,658 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1015 selfloop transitions, 286 changer transitions 33/1373 dead transitions. [2022-11-18 20:58:16,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 1373 transitions, 30574 flow [2022-11-18 20:58:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 20:58:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-18 20:58:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2631 transitions. [2022-11-18 20:58:16,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5597872340425532 [2022-11-18 20:58:16,662 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2631 transitions. [2022-11-18 20:58:16,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2631 transitions. [2022-11-18 20:58:16,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:16,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2631 transitions. [2022-11-18 20:58:16,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 52.62) internal successors, (2631), 50 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:16,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:16,667 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:16,668 INFO L175 Difference]: Start difference. First operand has 891 places, 1200 transitions, 23604 flow. Second operand 50 states and 2631 transitions. [2022-11-18 20:58:16,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 1373 transitions, 30574 flow [2022-11-18 20:58:18,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 1373 transitions, 29738 flow, removed 291 selfloop flow, removed 25 redundant places. [2022-11-18 20:58:18,928 INFO L231 Difference]: Finished difference. Result has 921 places, 1296 transitions, 26137 flow [2022-11-18 20:58:18,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22845, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=925, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=26137, PETRI_PLACES=921, PETRI_TRANSITIONS=1296} [2022-11-18 20:58:18,929 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 833 predicate places. [2022-11-18 20:58:18,929 INFO L495 AbstractCegarLoop]: Abstraction has has 921 places, 1296 transitions, 26137 flow [2022-11-18 20:58:18,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:18,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:18,929 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:18,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-11-18 20:58:18,930 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:58:18,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:18,930 INFO L85 PathProgramCache]: Analyzing trace with hash 649497290, now seen corresponding path program 203 times [2022-11-18 20:58:18,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:18,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098356214] [2022-11-18 20:58:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:18,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:19,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:19,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098356214] [2022-11-18 20:58:19,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098356214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:19,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:19,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:58:19,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663797641] [2022-11-18 20:58:19,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:19,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:58:19,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:19,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:58:19,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:58:19,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:58:19,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 921 places, 1296 transitions, 26137 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:19,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:19,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:58:19,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:23,030 INFO L130 PetriNetUnfolder]: 831/2654 cut-off events. [2022-11-18 20:58:23,030 INFO L131 PetriNetUnfolder]: For 143593/143593 co-relation queries the response was YES. [2022-11-18 20:58:23,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29102 conditions, 2654 events. 831/2654 cut-off events. For 143593/143593 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22242 event pairs, 45 based on Foata normal form. 1/2651 useless extension candidates. Maximal degree in co-relation 28768. Up to 1837 conditions per place. [2022-11-18 20:58:23,110 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1072 selfloop transitions, 222 changer transitions 29/1362 dead transitions. [2022-11-18 20:58:23,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 946 places, 1362 transitions, 30576 flow [2022-11-18 20:58:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:58:23,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:58:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1704 transitions. [2022-11-18 20:58:23,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2022-11-18 20:58:23,112 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1704 transitions. [2022-11-18 20:58:23,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1704 transitions. [2022-11-18 20:58:23,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:23,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1704 transitions. [2022-11-18 20:58:23,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.25) internal successors, (1704), 32 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:23,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:23,116 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:23,116 INFO L175 Difference]: Start difference. First operand has 921 places, 1296 transitions, 26137 flow. Second operand 32 states and 1704 transitions. [2022-11-18 20:58:23,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 946 places, 1362 transitions, 30576 flow [2022-11-18 20:58:25,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 913 places, 1362 transitions, 29560 flow, removed 385 selfloop flow, removed 33 redundant places. [2022-11-18 20:58:25,351 INFO L231 Difference]: Finished difference. Result has 920 places, 1310 transitions, 26299 flow [2022-11-18 20:58:25,351 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25187, PETRI_DIFFERENCE_MINUEND_PLACES=882, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1082, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=26299, PETRI_PLACES=920, PETRI_TRANSITIONS=1310} [2022-11-18 20:58:25,351 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 832 predicate places. [2022-11-18 20:58:25,351 INFO L495 AbstractCegarLoop]: Abstraction has has 920 places, 1310 transitions, 26299 flow [2022-11-18 20:58:25,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:25,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:25,352 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:25,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-11-18 20:58:25,352 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:58:25,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:25,352 INFO L85 PathProgramCache]: Analyzing trace with hash -799570080, now seen corresponding path program 204 times [2022-11-18 20:58:25,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:25,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426805409] [2022-11-18 20:58:25,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:25,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:25,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:25,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426805409] [2022-11-18 20:58:25,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426805409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:25,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:25,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:58:25,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940852586] [2022-11-18 20:58:25,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:25,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:58:25,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:25,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:58:25,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:58:25,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:58:25,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 1310 transitions, 26299 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:25,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:25,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:58:25,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:29,595 INFO L130 PetriNetUnfolder]: 831/2645 cut-off events. [2022-11-18 20:58:29,595 INFO L131 PetriNetUnfolder]: For 145665/145665 co-relation queries the response was YES. [2022-11-18 20:58:29,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29041 conditions, 2645 events. 831/2645 cut-off events. For 145665/145665 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 22133 event pairs, 44 based on Foata normal form. 1/2642 useless extension candidates. Maximal degree in co-relation 28701. Up to 1817 conditions per place. [2022-11-18 20:58:29,671 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1045 selfloop transitions, 245 changer transitions 30/1359 dead transitions. [2022-11-18 20:58:29,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 947 places, 1359 transitions, 30238 flow [2022-11-18 20:58:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:58:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:58:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1756 transitions. [2022-11-18 20:58:29,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.56608639587363 [2022-11-18 20:58:29,673 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1756 transitions. [2022-11-18 20:58:29,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1756 transitions. [2022-11-18 20:58:29,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:29,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1756 transitions. [2022-11-18 20:58:29,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.21212121212121) internal successors, (1756), 33 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:29,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:29,677 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:29,677 INFO L175 Difference]: Start difference. First operand has 920 places, 1310 transitions, 26299 flow. Second operand 33 states and 1756 transitions. [2022-11-18 20:58:29,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 947 places, 1359 transitions, 30238 flow [2022-11-18 20:58:32,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 1359 transitions, 29324 flow, removed 288 selfloop flow, removed 27 redundant places. [2022-11-18 20:58:32,064 INFO L231 Difference]: Finished difference. Result has 927 places, 1306 transitions, 26080 flow [2022-11-18 20:58:32,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25503, PETRI_DIFFERENCE_MINUEND_PLACES=888, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=26080, PETRI_PLACES=927, PETRI_TRANSITIONS=1306} [2022-11-18 20:58:32,065 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 839 predicate places. [2022-11-18 20:58:32,065 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 1306 transitions, 26080 flow [2022-11-18 20:58:32,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:32,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:32,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:32,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-11-18 20:58:32,066 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:58:32,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:32,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1620891696, now seen corresponding path program 205 times [2022-11-18 20:58:32,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:32,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252991783] [2022-11-18 20:58:32,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:32,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:32,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:32,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252991783] [2022-11-18 20:58:32,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252991783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:32,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:32,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:58:32,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147993425] [2022-11-18 20:58:32,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:32,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:58:32,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:32,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:58:32,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:58:32,527 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:58:32,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1306 transitions, 26080 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:32,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:32,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:58:32,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:36,271 INFO L130 PetriNetUnfolder]: 821/2617 cut-off events. [2022-11-18 20:58:36,272 INFO L131 PetriNetUnfolder]: For 130487/130487 co-relation queries the response was YES. [2022-11-18 20:58:36,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28319 conditions, 2617 events. 821/2617 cut-off events. For 130487/130487 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21864 event pairs, 45 based on Foata normal form. 1/2614 useless extension candidates. Maximal degree in co-relation 27977. Up to 1894 conditions per place. [2022-11-18 20:58:36,346 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1108 selfloop transitions, 174 changer transitions 25/1346 dead transitions. [2022-11-18 20:58:36,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 1346 transitions, 29710 flow [2022-11-18 20:58:36,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:58:36,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:58:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1851 transitions. [2022-11-18 20:58:36,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626139817629179 [2022-11-18 20:58:36,349 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1851 transitions. [2022-11-18 20:58:36,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1851 transitions. [2022-11-18 20:58:36,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:36,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1851 transitions. [2022-11-18 20:58:36,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.885714285714286) internal successors, (1851), 35 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:36,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:36,352 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:36,352 INFO L175 Difference]: Start difference. First operand has 927 places, 1306 transitions, 26080 flow. Second operand 35 states and 1851 transitions. [2022-11-18 20:58:36,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 1346 transitions, 29710 flow [2022-11-18 20:58:38,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 1346 transitions, 29199 flow, removed 87 selfloop flow, removed 29 redundant places. [2022-11-18 20:58:38,692 INFO L231 Difference]: Finished difference. Result has 934 places, 1300 transitions, 25969 flow [2022-11-18 20:58:38,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25587, PETRI_DIFFERENCE_MINUEND_PLACES=893, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=25969, PETRI_PLACES=934, PETRI_TRANSITIONS=1300} [2022-11-18 20:58:38,693 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 846 predicate places. [2022-11-18 20:58:38,693 INFO L495 AbstractCegarLoop]: Abstraction has has 934 places, 1300 transitions, 25969 flow [2022-11-18 20:58:38,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:38,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:38,694 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:38,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-11-18 20:58:38,694 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:58:38,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:38,694 INFO L85 PathProgramCache]: Analyzing trace with hash 416315876, now seen corresponding path program 206 times [2022-11-18 20:58:38,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:38,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266936656] [2022-11-18 20:58:38,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:38,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:39,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:39,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:39,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266936656] [2022-11-18 20:58:39,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266936656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:39,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:39,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:58:39,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313295814] [2022-11-18 20:58:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:39,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:58:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:39,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:58:39,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:58:39,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:58:39,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 934 places, 1300 transitions, 25969 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:39,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:39,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:58:39,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:42,850 INFO L130 PetriNetUnfolder]: 813/2605 cut-off events. [2022-11-18 20:58:42,850 INFO L131 PetriNetUnfolder]: For 128117/128117 co-relation queries the response was YES. [2022-11-18 20:58:42,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28031 conditions, 2605 events. 813/2605 cut-off events. For 128117/128117 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21807 event pairs, 41 based on Foata normal form. 1/2603 useless extension candidates. Maximal degree in co-relation 27689. Up to 1905 conditions per place. [2022-11-18 20:58:42,921 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1124 selfloop transitions, 157 changer transitions 20/1340 dead transitions. [2022-11-18 20:58:42,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 1340 transitions, 29318 flow [2022-11-18 20:58:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:58:42,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:58:42,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1945 transitions. [2022-11-18 20:58:42,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592294422081656 [2022-11-18 20:58:42,923 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1945 transitions. [2022-11-18 20:58:42,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1945 transitions. [2022-11-18 20:58:42,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:42,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1945 transitions. [2022-11-18 20:58:42,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.567567567567565) internal successors, (1945), 37 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:42,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:42,928 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:42,928 INFO L175 Difference]: Start difference. First operand has 934 places, 1300 transitions, 25969 flow. Second operand 37 states and 1945 transitions. [2022-11-18 20:58:42,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 1340 transitions, 29318 flow [2022-11-18 20:58:45,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 928 places, 1340 transitions, 28785 flow, removed 85 selfloop flow, removed 34 redundant places. [2022-11-18 20:58:45,204 INFO L231 Difference]: Finished difference. Result has 935 places, 1301 transitions, 25900 flow [2022-11-18 20:58:45,205 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25466, PETRI_DIFFERENCE_MINUEND_PLACES=892, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=25900, PETRI_PLACES=935, PETRI_TRANSITIONS=1301} [2022-11-18 20:58:45,205 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 847 predicate places. [2022-11-18 20:58:45,205 INFO L495 AbstractCegarLoop]: Abstraction has has 935 places, 1301 transitions, 25900 flow [2022-11-18 20:58:45,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:45,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:45,206 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:45,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-11-18 20:58:45,206 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:58:45,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:45,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1214989986, now seen corresponding path program 207 times [2022-11-18 20:58:45,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:45,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774313687] [2022-11-18 20:58:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:45,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:45,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:45,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774313687] [2022-11-18 20:58:45,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774313687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:45,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:45,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:58:45,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603023062] [2022-11-18 20:58:45,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:45,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:58:45,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:45,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:58:45,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:58:45,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:58:45,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 1301 transitions, 25900 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:45,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:45,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:58:45,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:49,588 INFO L130 PetriNetUnfolder]: 807/2594 cut-off events. [2022-11-18 20:58:49,588 INFO L131 PetriNetUnfolder]: For 125425/125425 co-relation queries the response was YES. [2022-11-18 20:58:49,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27822 conditions, 2594 events. 807/2594 cut-off events. For 125425/125425 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21772 event pairs, 38 based on Foata normal form. 1/2593 useless extension candidates. Maximal degree in co-relation 27480. Up to 1934 conditions per place. [2022-11-18 20:58:49,663 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1133 selfloop transitions, 140 changer transitions 22/1334 dead transitions. [2022-11-18 20:58:49,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 963 places, 1334 transitions, 29092 flow [2022-11-18 20:58:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:58:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:58:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1910 transitions. [2022-11-18 20:58:49,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644208037825059 [2022-11-18 20:58:49,666 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1910 transitions. [2022-11-18 20:58:49,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1910 transitions. [2022-11-18 20:58:49,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:49,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1910 transitions. [2022-11-18 20:58:49,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.05555555555556) internal successors, (1910), 36 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:49,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:49,670 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:49,670 INFO L175 Difference]: Start difference. First operand has 935 places, 1301 transitions, 25900 flow. Second operand 36 states and 1910 transitions. [2022-11-18 20:58:49,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 963 places, 1334 transitions, 29092 flow [2022-11-18 20:58:51,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 933 places, 1334 transitions, 28602 flow, removed 120 selfloop flow, removed 30 redundant places. [2022-11-18 20:58:51,838 INFO L231 Difference]: Finished difference. Result has 939 places, 1293 transitions, 25791 flow [2022-11-18 20:58:51,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25422, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=25791, PETRI_PLACES=939, PETRI_TRANSITIONS=1293} [2022-11-18 20:58:51,838 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 851 predicate places. [2022-11-18 20:58:51,839 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 1293 transitions, 25791 flow [2022-11-18 20:58:51,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:51,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:51,839 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:51,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-11-18 20:58:51,839 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:58:51,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:51,839 INFO L85 PathProgramCache]: Analyzing trace with hash -359252944, now seen corresponding path program 208 times [2022-11-18 20:58:51,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:51,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766573655] [2022-11-18 20:58:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:51,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:52,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:52,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766573655] [2022-11-18 20:58:52,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766573655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:52,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:52,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:58:52,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635222230] [2022-11-18 20:58:52,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:52,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:58:52,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:52,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:58:52,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:58:52,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:58:52,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 1293 transitions, 25791 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:52,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:52,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:58:52,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:55,928 INFO L130 PetriNetUnfolder]: 799/2569 cut-off events. [2022-11-18 20:58:55,929 INFO L131 PetriNetUnfolder]: For 121700/121700 co-relation queries the response was YES. [2022-11-18 20:58:55,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27501 conditions, 2569 events. 799/2569 cut-off events. For 121700/121700 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21426 event pairs, 39 based on Foata normal form. 1/2568 useless extension candidates. Maximal degree in co-relation 27157. Up to 1961 conditions per place. [2022-11-18 20:58:56,003 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1152 selfloop transitions, 111 changer transitions 16/1318 dead transitions. [2022-11-18 20:58:56,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 1318 transitions, 28527 flow [2022-11-18 20:58:56,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:58:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:58:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1595 transitions. [2022-11-18 20:58:56,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5656028368794326 [2022-11-18 20:58:56,005 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1595 transitions. [2022-11-18 20:58:56,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1595 transitions. [2022-11-18 20:58:56,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:56,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1595 transitions. [2022-11-18 20:58:56,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.166666666666664) internal successors, (1595), 30 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:56,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:56,008 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:56,009 INFO L175 Difference]: Start difference. First operand has 939 places, 1293 transitions, 25791 flow. Second operand 30 states and 1595 transitions. [2022-11-18 20:58:56,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 1318 transitions, 28527 flow [2022-11-18 20:58:58,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 1318 transitions, 27935 flow, removed 119 selfloop flow, removed 35 redundant places. [2022-11-18 20:58:58,111 INFO L231 Difference]: Finished difference. Result has 931 places, 1286 transitions, 25355 flow [2022-11-18 20:58:58,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25203, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=25355, PETRI_PLACES=931, PETRI_TRANSITIONS=1286} [2022-11-18 20:58:58,112 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 843 predicate places. [2022-11-18 20:58:58,112 INFO L495 AbstractCegarLoop]: Abstraction has has 931 places, 1286 transitions, 25355 flow [2022-11-18 20:58:58,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:58,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:58,113 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:58,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-11-18 20:58:58,113 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:58:58,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1344540094, now seen corresponding path program 209 times [2022-11-18 20:58:58,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:58,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115658909] [2022-11-18 20:58:58,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:58,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:58,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:58,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115658909] [2022-11-18 20:58:58,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115658909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:58,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:58,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:58:58,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404455160] [2022-11-18 20:58:58,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:58,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:58:58,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:58,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:58:58,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:58:58,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:58:58,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 1286 transitions, 25355 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:58,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:58,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:58:58,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:02,123 INFO L130 PetriNetUnfolder]: 798/2555 cut-off events. [2022-11-18 20:59:02,123 INFO L131 PetriNetUnfolder]: For 121282/121282 co-relation queries the response was YES. [2022-11-18 20:59:02,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27247 conditions, 2555 events. 798/2555 cut-off events. For 121282/121282 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 21242 event pairs, 42 based on Foata normal form. 1/2552 useless extension candidates. Maximal degree in co-relation 26904. Up to 1924 conditions per place. [2022-11-18 20:59:02,194 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1132 selfloop transitions, 118 changer transitions 23/1312 dead transitions. [2022-11-18 20:59:02,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 947 places, 1312 transitions, 28089 flow [2022-11-18 20:59:02,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:59:02,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:59:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1656 transitions. [2022-11-18 20:59:02,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5682910089224433 [2022-11-18 20:59:02,196 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1656 transitions. [2022-11-18 20:59:02,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1656 transitions. [2022-11-18 20:59:02,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:02,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1656 transitions. [2022-11-18 20:59:02,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.41935483870968) internal successors, (1656), 31 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:02,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:02,199 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:02,199 INFO L175 Difference]: Start difference. First operand has 931 places, 1286 transitions, 25355 flow. Second operand 31 states and 1656 transitions. [2022-11-18 20:59:02,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 947 places, 1312 transitions, 28089 flow [2022-11-18 20:59:04,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 1312 transitions, 27820 flow, removed 9 selfloop flow, removed 27 redundant places. [2022-11-18 20:59:04,344 INFO L231 Difference]: Finished difference. Result has 924 places, 1271 transitions, 25161 flow [2022-11-18 20:59:04,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25092, PETRI_DIFFERENCE_MINUEND_PLACES=890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=25161, PETRI_PLACES=924, PETRI_TRANSITIONS=1271} [2022-11-18 20:59:04,345 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 836 predicate places. [2022-11-18 20:59:04,345 INFO L495 AbstractCegarLoop]: Abstraction has has 924 places, 1271 transitions, 25161 flow [2022-11-18 20:59:04,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:04,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:04,345 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:04,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-11-18 20:59:04,345 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:59:04,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:04,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2138442258, now seen corresponding path program 210 times [2022-11-18 20:59:04,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:04,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374542207] [2022-11-18 20:59:04,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:04,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:04,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:04,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374542207] [2022-11-18 20:59:04,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374542207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:04,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:04,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:59:04,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889967776] [2022-11-18 20:59:04,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:04,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:59:04,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:04,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:59:04,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:59:04,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:59:04,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 1271 transitions, 25161 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:04,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:04,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:59:04,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:08,627 INFO L130 PetriNetUnfolder]: 795/2553 cut-off events. [2022-11-18 20:59:08,627 INFO L131 PetriNetUnfolder]: For 121627/121627 co-relation queries the response was YES. [2022-11-18 20:59:08,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27270 conditions, 2553 events. 795/2553 cut-off events. For 121627/121627 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 21280 event pairs, 45 based on Foata normal form. 1/2550 useless extension candidates. Maximal degree in co-relation 26929. Up to 1762 conditions per place. [2022-11-18 20:59:08,694 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1018 selfloop transitions, 231 changer transitions 22/1310 dead transitions. [2022-11-18 20:59:08,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 948 places, 1310 transitions, 28306 flow [2022-11-18 20:59:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:59:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:59:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1903 transitions. [2022-11-18 20:59:08,696 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623522458628841 [2022-11-18 20:59:08,696 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1903 transitions. [2022-11-18 20:59:08,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1903 transitions. [2022-11-18 20:59:08,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:08,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1903 transitions. [2022-11-18 20:59:08,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.861111111111114) internal successors, (1903), 36 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:08,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:08,700 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:08,700 INFO L175 Difference]: Start difference. First operand has 924 places, 1271 transitions, 25161 flow. Second operand 36 states and 1903 transitions. [2022-11-18 20:59:08,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 948 places, 1310 transitions, 28306 flow [2022-11-18 20:59:10,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 916 places, 1310 transitions, 27946 flow, removed 28 selfloop flow, removed 32 redundant places. [2022-11-18 20:59:10,763 INFO L231 Difference]: Finished difference. Result has 924 places, 1267 transitions, 25298 flow [2022-11-18 20:59:10,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=24809, PETRI_DIFFERENCE_MINUEND_PLACES=881, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1040, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=25298, PETRI_PLACES=924, PETRI_TRANSITIONS=1267} [2022-11-18 20:59:10,763 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 836 predicate places. [2022-11-18 20:59:10,763 INFO L495 AbstractCegarLoop]: Abstraction has has 924 places, 1267 transitions, 25298 flow [2022-11-18 20:59:10,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:10,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:10,764 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:10,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-11-18 20:59:10,764 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:59:10,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:10,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1970967598, now seen corresponding path program 211 times [2022-11-18 20:59:10,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:10,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471228602] [2022-11-18 20:59:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:10,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:11,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:11,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471228602] [2022-11-18 20:59:11,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471228602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:11,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:11,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:59:11,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350903823] [2022-11-18 20:59:11,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:11,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:59:11,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:11,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:59:11,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:59:11,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:59:11,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 1267 transitions, 25298 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:11,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:11,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:59:11,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:14,892 INFO L130 PetriNetUnfolder]: 791/2557 cut-off events. [2022-11-18 20:59:14,892 INFO L131 PetriNetUnfolder]: For 123538/123538 co-relation queries the response was YES. [2022-11-18 20:59:14,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27514 conditions, 2557 events. 791/2557 cut-off events. For 123538/123538 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 21304 event pairs, 41 based on Foata normal form. 1/2555 useless extension candidates. Maximal degree in co-relation 27171. Up to 1740 conditions per place. [2022-11-18 20:59:14,960 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1019 selfloop transitions, 211 changer transitions 46/1315 dead transitions. [2022-11-18 20:59:14,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 1315 transitions, 28872 flow [2022-11-18 20:59:14,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:59:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:59:14,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1904 transitions. [2022-11-18 20:59:14,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626477541371159 [2022-11-18 20:59:14,962 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1904 transitions. [2022-11-18 20:59:14,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1904 transitions. [2022-11-18 20:59:14,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:14,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1904 transitions. [2022-11-18 20:59:14,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.888888888888886) internal successors, (1904), 36 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:14,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:14,966 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:14,966 INFO L175 Difference]: Start difference. First operand has 924 places, 1267 transitions, 25298 flow. Second operand 36 states and 1904 transitions. [2022-11-18 20:59:14,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 1315 transitions, 28872 flow [2022-11-18 20:59:17,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 1315 transitions, 28265 flow, removed 50 selfloop flow, removed 33 redundant places. [2022-11-18 20:59:17,217 INFO L231 Difference]: Finished difference. Result has 927 places, 1246 transitions, 24838 flow [2022-11-18 20:59:17,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=24742, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1059, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=24838, PETRI_PLACES=927, PETRI_TRANSITIONS=1246} [2022-11-18 20:59:17,218 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 839 predicate places. [2022-11-18 20:59:17,218 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 1246 transitions, 24838 flow [2022-11-18 20:59:17,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:17,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:17,218 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:17,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-11-18 20:59:17,218 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:59:17,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:17,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1593916288, now seen corresponding path program 212 times [2022-11-18 20:59:17,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:17,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187827233] [2022-11-18 20:59:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:17,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:17,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:17,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187827233] [2022-11-18 20:59:17,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187827233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:17,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:17,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:59:17,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488989350] [2022-11-18 20:59:17,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:17,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:59:17,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:17,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:59:17,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:59:17,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:59:17,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1246 transitions, 24838 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:17,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:17,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:59:17,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:21,585 INFO L130 PetriNetUnfolder]: 769/2476 cut-off events. [2022-11-18 20:59:21,585 INFO L131 PetriNetUnfolder]: For 120601/120601 co-relation queries the response was YES. [2022-11-18 20:59:21,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26671 conditions, 2476 events. 769/2476 cut-off events. For 120601/120601 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20427 event pairs, 40 based on Foata normal form. 1/2474 useless extension candidates. Maximal degree in co-relation 26328. Up to 1874 conditions per place. [2022-11-18 20:59:21,653 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1094 selfloop transitions, 100 changer transitions 39/1272 dead transitions. [2022-11-18 20:59:21,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 950 places, 1272 transitions, 27473 flow [2022-11-18 20:59:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:59:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:59:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1702 transitions. [2022-11-18 20:59:21,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5658244680851063 [2022-11-18 20:59:21,656 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1702 transitions. [2022-11-18 20:59:21,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1702 transitions. [2022-11-18 20:59:21,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:21,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1702 transitions. [2022-11-18 20:59:21,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.1875) internal successors, (1702), 32 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:21,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:21,659 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:21,659 INFO L175 Difference]: Start difference. First operand has 927 places, 1246 transitions, 24838 flow. Second operand 32 states and 1702 transitions. [2022-11-18 20:59:21,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 950 places, 1272 transitions, 27473 flow [2022-11-18 20:59:23,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 1272 transitions, 26830 flow, removed 162 selfloop flow, removed 29 redundant places. [2022-11-18 20:59:23,985 INFO L231 Difference]: Finished difference. Result has 925 places, 1219 transitions, 24070 flow [2022-11-18 20:59:23,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=24199, PETRI_DIFFERENCE_MINUEND_PLACES=890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=24070, PETRI_PLACES=925, PETRI_TRANSITIONS=1219} [2022-11-18 20:59:23,986 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 837 predicate places. [2022-11-18 20:59:23,986 INFO L495 AbstractCegarLoop]: Abstraction has has 925 places, 1219 transitions, 24070 flow [2022-11-18 20:59:23,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:23,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:23,987 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:23,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-11-18 20:59:23,987 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:59:23,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:23,987 INFO L85 PathProgramCache]: Analyzing trace with hash -953027210, now seen corresponding path program 213 times [2022-11-18 20:59:23,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:23,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975368124] [2022-11-18 20:59:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:23,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:24,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:24,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975368124] [2022-11-18 20:59:24,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975368124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:24,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:24,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:59:24,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609089035] [2022-11-18 20:59:24,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:24,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:59:24,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:24,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:59:24,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:59:24,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:59:24,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 925 places, 1219 transitions, 24070 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:24,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:24,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:59:24,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:28,400 INFO L130 PetriNetUnfolder]: 759/2440 cut-off events. [2022-11-18 20:59:28,400 INFO L131 PetriNetUnfolder]: For 119412/119412 co-relation queries the response was YES. [2022-11-18 20:59:28,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26264 conditions, 2440 events. 759/2440 cut-off events. For 119412/119412 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20057 event pairs, 41 based on Foata normal form. 1/2438 useless extension candidates. Maximal degree in co-relation 25922. Up to 1839 conditions per place. [2022-11-18 20:59:28,467 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1067 selfloop transitions, 130 changer transitions 17/1253 dead transitions. [2022-11-18 20:59:28,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 1253 transitions, 27135 flow [2022-11-18 20:59:28,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:59:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:59:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2011 transitions. [2022-11-18 20:59:28,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562989921612542 [2022-11-18 20:59:28,469 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2011 transitions. [2022-11-18 20:59:28,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2011 transitions. [2022-11-18 20:59:28,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:28,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2011 transitions. [2022-11-18 20:59:28,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.921052631578945) internal successors, (2011), 38 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:28,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:28,474 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:28,474 INFO L175 Difference]: Start difference. First operand has 925 places, 1219 transitions, 24070 flow. Second operand 38 states and 2011 transitions. [2022-11-18 20:59:28,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 935 places, 1253 transitions, 27135 flow [2022-11-18 20:59:30,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 897 places, 1253 transitions, 26647 flow, removed 38 selfloop flow, removed 38 redundant places. [2022-11-18 20:59:30,684 INFO L231 Difference]: Finished difference. Result has 905 places, 1221 transitions, 24129 flow [2022-11-18 20:59:30,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=23610, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=24129, PETRI_PLACES=905, PETRI_TRANSITIONS=1221} [2022-11-18 20:59:30,684 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 817 predicate places. [2022-11-18 20:59:30,684 INFO L495 AbstractCegarLoop]: Abstraction has has 905 places, 1221 transitions, 24129 flow [2022-11-18 20:59:30,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:30,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:30,685 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:30,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-11-18 20:59:30,685 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:59:30,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:30,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1932938860, now seen corresponding path program 214 times [2022-11-18 20:59:30,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:30,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016388685] [2022-11-18 20:59:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:30,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:31,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:31,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016388685] [2022-11-18 20:59:31,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016388685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:31,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:31,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:59:31,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181606356] [2022-11-18 20:59:31,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:31,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:59:31,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:31,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:59:31,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:59:31,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:59:31,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 905 places, 1221 transitions, 24129 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:31,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:31,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:59:31,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:35,138 INFO L130 PetriNetUnfolder]: 757/2437 cut-off events. [2022-11-18 20:59:35,138 INFO L131 PetriNetUnfolder]: For 118442/118442 co-relation queries the response was YES. [2022-11-18 20:59:35,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26156 conditions, 2437 events. 757/2437 cut-off events. For 118442/118442 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20034 event pairs, 39 based on Foata normal form. 1/2435 useless extension candidates. Maximal degree in co-relation 25819. Up to 1834 conditions per place. [2022-11-18 20:59:35,199 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1060 selfloop transitions, 137 changer transitions 16/1252 dead transitions. [2022-11-18 20:59:35,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 1252 transitions, 27154 flow [2022-11-18 20:59:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:59:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 20:59:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2060 transitions. [2022-11-18 20:59:35,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5619203491543917 [2022-11-18 20:59:35,202 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2060 transitions. [2022-11-18 20:59:35,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2060 transitions. [2022-11-18 20:59:35,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:35,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2060 transitions. [2022-11-18 20:59:35,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.82051282051282) internal successors, (2060), 39 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:35,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:35,207 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:35,207 INFO L175 Difference]: Start difference. First operand has 905 places, 1221 transitions, 24129 flow. Second operand 39 states and 2060 transitions. [2022-11-18 20:59:35,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 937 places, 1252 transitions, 27154 flow [2022-11-18 20:59:37,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 1252 transitions, 26685 flow, removed 123 selfloop flow, removed 33 redundant places. [2022-11-18 20:59:37,280 INFO L231 Difference]: Finished difference. Result has 910 places, 1221 transitions, 24183 flow [2022-11-18 20:59:37,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=23670, PETRI_DIFFERENCE_MINUEND_PLACES=866, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=24183, PETRI_PLACES=910, PETRI_TRANSITIONS=1221} [2022-11-18 20:59:37,281 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 822 predicate places. [2022-11-18 20:59:37,281 INFO L495 AbstractCegarLoop]: Abstraction has has 910 places, 1221 transitions, 24183 flow [2022-11-18 20:59:37,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:37,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:37,281 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:37,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-11-18 20:59:37,281 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:59:37,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash 361932152, now seen corresponding path program 215 times [2022-11-18 20:59:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:37,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682577395] [2022-11-18 20:59:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:37,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:37,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:37,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682577395] [2022-11-18 20:59:37,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682577395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:37,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:37,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:59:37,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043469806] [2022-11-18 20:59:37,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:37,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:59:37,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:37,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:59:37,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:59:37,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:59:37,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 1221 transitions, 24183 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:37,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:37,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:59:37,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:41,820 INFO L130 PetriNetUnfolder]: 760/2431 cut-off events. [2022-11-18 20:59:41,821 INFO L131 PetriNetUnfolder]: For 120947/120947 co-relation queries the response was YES. [2022-11-18 20:59:41,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26262 conditions, 2431 events. 760/2431 cut-off events. For 120947/120947 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19916 event pairs, 41 based on Foata normal form. 1/2428 useless extension candidates. Maximal degree in co-relation 25924. Up to 1857 conditions per place. [2022-11-18 20:59:41,889 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1085 selfloop transitions, 119 changer transitions 16/1259 dead transitions. [2022-11-18 20:59:41,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 1259 transitions, 27329 flow [2022-11-18 20:59:41,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:59:41,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:59:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2009 transitions. [2022-11-18 20:59:41,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624300111982082 [2022-11-18 20:59:41,893 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2009 transitions. [2022-11-18 20:59:41,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2009 transitions. [2022-11-18 20:59:41,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:41,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2009 transitions. [2022-11-18 20:59:41,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.86842105263158) internal successors, (2009), 38 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:41,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:41,899 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:41,899 INFO L175 Difference]: Start difference. First operand has 910 places, 1221 transitions, 24183 flow. Second operand 38 states and 2009 transitions. [2022-11-18 20:59:41,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 1259 transitions, 27329 flow [2022-11-18 20:59:44,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 907 places, 1259 transitions, 26830 flow, removed 128 selfloop flow, removed 33 redundant places. [2022-11-18 20:59:44,176 INFO L231 Difference]: Finished difference. Result has 915 places, 1228 transitions, 24260 flow [2022-11-18 20:59:44,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=23708, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=24260, PETRI_PLACES=915, PETRI_TRANSITIONS=1228} [2022-11-18 20:59:44,177 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 827 predicate places. [2022-11-18 20:59:44,177 INFO L495 AbstractCegarLoop]: Abstraction has has 915 places, 1228 transitions, 24260 flow [2022-11-18 20:59:44,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:44,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:44,177 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:44,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-11-18 20:59:44,178 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:59:44,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:44,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1620463998, now seen corresponding path program 216 times [2022-11-18 20:59:44,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:44,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136332337] [2022-11-18 20:59:44,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:44,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:44,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:44,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136332337] [2022-11-18 20:59:44,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136332337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:44,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:44,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:59:44,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271825153] [2022-11-18 20:59:44,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:44,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:59:44,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:44,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:59:44,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:59:44,783 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:59:44,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 1228 transitions, 24260 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:44,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:44,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:59:44,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:48,768 INFO L130 PetriNetUnfolder]: 755/2430 cut-off events. [2022-11-18 20:59:48,768 INFO L131 PetriNetUnfolder]: For 117376/117376 co-relation queries the response was YES. [2022-11-18 20:59:48,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25996 conditions, 2430 events. 755/2430 cut-off events. For 117376/117376 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19943 event pairs, 41 based on Foata normal form. 1/2428 useless extension candidates. Maximal degree in co-relation 25653. Up to 1783 conditions per place. [2022-11-18 20:59:48,849 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1050 selfloop transitions, 115 changer transitions 51/1255 dead transitions. [2022-11-18 20:59:48,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 942 places, 1255 transitions, 26982 flow [2022-11-18 20:59:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:59:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:59:48,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1789 transitions. [2022-11-18 20:59:48,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5597622027534418 [2022-11-18 20:59:48,852 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1789 transitions. [2022-11-18 20:59:48,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1789 transitions. [2022-11-18 20:59:48,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:48,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1789 transitions. [2022-11-18 20:59:48,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.61764705882353) internal successors, (1789), 34 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:48,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:48,855 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:48,855 INFO L175 Difference]: Start difference. First operand has 915 places, 1228 transitions, 24260 flow. Second operand 34 states and 1789 transitions. [2022-11-18 20:59:48,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 942 places, 1255 transitions, 26982 flow [2022-11-18 20:59:50,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 913 places, 1255 transitions, 26558 flow, removed 131 selfloop flow, removed 29 redundant places. [2022-11-18 20:59:50,927 INFO L231 Difference]: Finished difference. Result has 918 places, 1186 transitions, 22980 flow [2022-11-18 20:59:50,927 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=23842, PETRI_DIFFERENCE_MINUEND_PLACES=880, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22980, PETRI_PLACES=918, PETRI_TRANSITIONS=1186} [2022-11-18 20:59:50,928 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 830 predicate places. [2022-11-18 20:59:50,928 INFO L495 AbstractCegarLoop]: Abstraction has has 918 places, 1186 transitions, 22980 flow [2022-11-18 20:59:50,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:50,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:50,928 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:50,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-11-18 20:59:50,928 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:59:50,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash 925682230, now seen corresponding path program 217 times [2022-11-18 20:59:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:50,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727203204] [2022-11-18 20:59:50,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:50,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:51,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:51,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727203204] [2022-11-18 20:59:51,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727203204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:51,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:51,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:59:51,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958480176] [2022-11-18 20:59:51,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:51,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:59:51,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:51,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:59:51,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:59:51,399 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:59:51,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 1186 transitions, 22980 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:51,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:51,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:59:51,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:54,516 INFO L130 PetriNetUnfolder]: 741/2385 cut-off events. [2022-11-18 20:59:54,516 INFO L131 PetriNetUnfolder]: For 113981/113981 co-relation queries the response was YES. [2022-11-18 20:59:54,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25221 conditions, 2385 events. 741/2385 cut-off events. For 113981/113981 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 19392 event pairs, 43 based on Foata normal form. 1/2383 useless extension candidates. Maximal degree in co-relation 24878. Up to 1687 conditions per place. [2022-11-18 20:59:54,598 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 982 selfloop transitions, 148 changer transitions 47/1216 dead transitions. [2022-11-18 20:59:54,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 1216 transitions, 25652 flow [2022-11-18 20:59:54,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:59:54,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:59:54,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1746 transitions. [2022-11-18 20:59:54,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562862669245648 [2022-11-18 20:59:54,600 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1746 transitions. [2022-11-18 20:59:54,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1746 transitions. [2022-11-18 20:59:54,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:54,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1746 transitions. [2022-11-18 20:59:54,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.90909090909091) internal successors, (1746), 33 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:54,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:54,604 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:54,604 INFO L175 Difference]: Start difference. First operand has 918 places, 1186 transitions, 22980 flow. Second operand 33 states and 1746 transitions. [2022-11-18 20:59:54,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 931 places, 1216 transitions, 25652 flow [2022-11-18 20:59:56,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 1216 transitions, 25024 flow, removed 79 selfloop flow, removed 39 redundant places. [2022-11-18 20:59:56,643 INFO L231 Difference]: Finished difference. Result has 897 places, 1151 transitions, 21812 flow [2022-11-18 20:59:56,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22362, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1038, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=21812, PETRI_PLACES=897, PETRI_TRANSITIONS=1151} [2022-11-18 20:59:56,644 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 809 predicate places. [2022-11-18 20:59:56,644 INFO L495 AbstractCegarLoop]: Abstraction has has 897 places, 1151 transitions, 21812 flow [2022-11-18 20:59:56,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:56,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:56,644 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:56,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-11-18 20:59:56,644 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:59:56,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:56,645 INFO L85 PathProgramCache]: Analyzing trace with hash 528562542, now seen corresponding path program 218 times [2022-11-18 20:59:56,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:56,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835164998] [2022-11-18 20:59:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:56,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:57,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:57,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835164998] [2022-11-18 20:59:57,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835164998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:57,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:57,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:59:57,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242484499] [2022-11-18 20:59:57,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:57,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:59:57,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:57,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:59:57,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:59:57,125 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 20:59:57,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 1151 transitions, 21812 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:57,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:57,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 20:59:57,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:00,419 INFO L130 PetriNetUnfolder]: 727/2324 cut-off events. [2022-11-18 21:00:00,419 INFO L131 PetriNetUnfolder]: For 109861/109861 co-relation queries the response was YES. [2022-11-18 21:00:00,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24282 conditions, 2324 events. 727/2324 cut-off events. For 109861/109861 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 18683 event pairs, 44 based on Foata normal form. 1/2322 useless extension candidates. Maximal degree in co-relation 23948. Up to 1677 conditions per place. [2022-11-18 21:00:00,480 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 965 selfloop transitions, 101 changer transitions 73/1178 dead transitions. [2022-11-18 21:00:00,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 918 places, 1178 transitions, 24353 flow [2022-11-18 21:00:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 21:00:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 21:00:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1743 transitions. [2022-11-18 21:00:00,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5618955512572534 [2022-11-18 21:00:00,482 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1743 transitions. [2022-11-18 21:00:00,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1743 transitions. [2022-11-18 21:00:00,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:00,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1743 transitions. [2022-11-18 21:00:00,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.81818181818182) internal successors, (1743), 33 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:00,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:00,485 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:00,485 INFO L175 Difference]: Start difference. First operand has 897 places, 1151 transitions, 21812 flow. Second operand 33 states and 1743 transitions. [2022-11-18 21:00:00,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 918 places, 1178 transitions, 24353 flow [2022-11-18 21:00:02,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 1178 transitions, 23950 flow, removed 42 selfloop flow, removed 33 redundant places. [2022-11-18 21:00:02,248 INFO L231 Difference]: Finished difference. Result has 889 places, 1091 transitions, 20245 flow [2022-11-18 21:00:02,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21413, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1050, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=20245, PETRI_PLACES=889, PETRI_TRANSITIONS=1091} [2022-11-18 21:00:02,249 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 801 predicate places. [2022-11-18 21:00:02,249 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 1091 transitions, 20245 flow [2022-11-18 21:00:02,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:02,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:02,250 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:02,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-11-18 21:00:02,250 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:00:02,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1637051532, now seen corresponding path program 219 times [2022-11-18 21:00:02,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:02,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078407973] [2022-11-18 21:00:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:02,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:02,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:02,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078407973] [2022-11-18 21:00:02,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078407973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:02,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:02,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 21:00:02,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879057316] [2022-11-18 21:00:02,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:02,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 21:00:02,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:02,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 21:00:02,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:00:02,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:00:02,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 1091 transitions, 20245 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:02,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:02,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:00:02,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:05,915 INFO L130 PetriNetUnfolder]: 712/2250 cut-off events. [2022-11-18 21:00:05,915 INFO L131 PetriNetUnfolder]: For 108876/108876 co-relation queries the response was YES. [2022-11-18 21:00:05,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23392 conditions, 2250 events. 712/2250 cut-off events. For 108876/108876 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17813 event pairs, 43 based on Foata normal form. 1/2249 useless extension candidates. Maximal degree in co-relation 23061. Up to 1673 conditions per place. [2022-11-18 21:00:05,990 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 964 selfloop transitions, 103 changer transitions 18/1124 dead transitions. [2022-11-18 21:00:05,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 1124 transitions, 23073 flow [2022-11-18 21:00:05,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 21:00:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 21:00:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1990 transitions. [2022-11-18 21:00:05,992 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5571108622620381 [2022-11-18 21:00:05,993 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1990 transitions. [2022-11-18 21:00:05,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1990 transitions. [2022-11-18 21:00:05,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:05,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1990 transitions. [2022-11-18 21:00:05,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.36842105263158) internal successors, (1990), 38 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:05,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:05,996 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:05,996 INFO L175 Difference]: Start difference. First operand has 889 places, 1091 transitions, 20245 flow. Second operand 38 states and 1990 transitions. [2022-11-18 21:00:05,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 1124 transitions, 23073 flow [2022-11-18 21:00:07,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 847 places, 1124 transitions, 22283 flow, removed 112 selfloop flow, removed 57 redundant places. [2022-11-18 21:00:07,597 INFO L231 Difference]: Finished difference. Result has 854 places, 1091 transitions, 19840 flow [2022-11-18 21:00:07,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19490, PETRI_DIFFERENCE_MINUEND_PLACES=810, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=989, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=19840, PETRI_PLACES=854, PETRI_TRANSITIONS=1091} [2022-11-18 21:00:07,597 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 766 predicate places. [2022-11-18 21:00:07,597 INFO L495 AbstractCegarLoop]: Abstraction has has 854 places, 1091 transitions, 19840 flow [2022-11-18 21:00:07,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:07,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:07,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:07,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-11-18 21:00:07,598 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:00:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:07,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2086834892, now seen corresponding path program 220 times [2022-11-18 21:00:07,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:07,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918304233] [2022-11-18 21:00:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:07,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:08,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:08,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918304233] [2022-11-18 21:00:08,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918304233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:08,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:08,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 21:00:08,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272698609] [2022-11-18 21:00:08,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:08,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 21:00:08,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:08,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 21:00:08,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:00:08,167 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:00:08,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 854 places, 1091 transitions, 19840 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:08,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:08,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:00:08,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:10,920 INFO L130 PetriNetUnfolder]: 705/2227 cut-off events. [2022-11-18 21:00:10,920 INFO L131 PetriNetUnfolder]: For 100122/100122 co-relation queries the response was YES. [2022-11-18 21:00:10,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22691 conditions, 2227 events. 705/2227 cut-off events. For 100122/100122 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17563 event pairs, 42 based on Foata normal form. 1/2224 useless extension candidates. Maximal degree in co-relation 22372. Up to 1669 conditions per place. [2022-11-18 21:00:10,983 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 957 selfloop transitions, 60 changer transitions 57/1113 dead transitions. [2022-11-18 21:00:10,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 1113 transitions, 22203 flow [2022-11-18 21:00:10,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 21:00:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 21:00:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1834 transitions. [2022-11-18 21:00:10,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-18 21:00:10,986 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1834 transitions. [2022-11-18 21:00:10,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1834 transitions. [2022-11-18 21:00:10,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:10,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1834 transitions. [2022-11-18 21:00:10,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.4) internal successors, (1834), 35 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:10,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:10,989 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:10,989 INFO L175 Difference]: Start difference. First operand has 854 places, 1091 transitions, 19840 flow. Second operand 35 states and 1834 transitions. [2022-11-18 21:00:10,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 881 places, 1113 transitions, 22203 flow [2022-11-18 21:00:12,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 1113 transitions, 21766 flow, removed 110 selfloop flow, removed 33 redundant places. [2022-11-18 21:00:12,414 INFO L231 Difference]: Finished difference. Result has 853 places, 1046 transitions, 18783 flow [2022-11-18 21:00:12,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19411, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1031, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18783, PETRI_PLACES=853, PETRI_TRANSITIONS=1046} [2022-11-18 21:00:12,414 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 765 predicate places. [2022-11-18 21:00:12,414 INFO L495 AbstractCegarLoop]: Abstraction has has 853 places, 1046 transitions, 18783 flow [2022-11-18 21:00:12,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:12,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:12,415 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:12,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-11-18 21:00:12,415 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:00:12,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:12,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1963876810, now seen corresponding path program 221 times [2022-11-18 21:00:12,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:12,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312138424] [2022-11-18 21:00:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:12,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:12,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:12,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312138424] [2022-11-18 21:00:12,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312138424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:12,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:12,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 21:00:12,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128854565] [2022-11-18 21:00:12,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:12,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 21:00:12,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:12,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 21:00:12,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 21:00:12,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:00:12,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 853 places, 1046 transitions, 18783 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:12,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:12,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:00:12,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:15,997 INFO L130 PetriNetUnfolder]: 694/2179 cut-off events. [2022-11-18 21:00:15,997 INFO L131 PetriNetUnfolder]: For 95722/95722 co-relation queries the response was YES. [2022-11-18 21:00:16,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22003 conditions, 2179 events. 694/2179 cut-off events. For 95722/95722 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 17104 event pairs, 45 based on Foata normal form. 1/2178 useless extension candidates. Maximal degree in co-relation 21684. Up to 1658 conditions per place. [2022-11-18 21:00:16,052 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 946 selfloop transitions, 67 changer transitions 15/1067 dead transitions. [2022-11-18 21:00:16,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 856 places, 1067 transitions, 21168 flow [2022-11-18 21:00:16,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 21:00:16,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 21:00:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1828 transitions. [2022-11-18 21:00:16,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5556231003039513 [2022-11-18 21:00:16,054 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1828 transitions. [2022-11-18 21:00:16,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1828 transitions. [2022-11-18 21:00:16,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:16,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1828 transitions. [2022-11-18 21:00:16,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.22857142857143) internal successors, (1828), 35 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:16,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:16,059 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:16,059 INFO L175 Difference]: Start difference. First operand has 853 places, 1046 transitions, 18783 flow. Second operand 35 states and 1828 transitions. [2022-11-18 21:00:16,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 856 places, 1067 transitions, 21168 flow [2022-11-18 21:00:17,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 1067 transitions, 20818 flow, removed 65 selfloop flow, removed 40 redundant places. [2022-11-18 21:00:17,574 INFO L231 Difference]: Finished difference. Result has 821 places, 1041 transitions, 18568 flow [2022-11-18 21:00:17,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18449, PETRI_DIFFERENCE_MINUEND_PLACES=782, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=979, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18568, PETRI_PLACES=821, PETRI_TRANSITIONS=1041} [2022-11-18 21:00:17,575 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 733 predicate places. [2022-11-18 21:00:17,575 INFO L495 AbstractCegarLoop]: Abstraction has has 821 places, 1041 transitions, 18568 flow [2022-11-18 21:00:17,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:17,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:17,575 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:17,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-11-18 21:00:17,575 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:00:17,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:17,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1573213868, now seen corresponding path program 222 times [2022-11-18 21:00:17,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:17,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88238928] [2022-11-18 21:00:17,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:17,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:18,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:18,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88238928] [2022-11-18 21:00:18,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88238928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:18,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:18,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 21:00:18,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160772780] [2022-11-18 21:00:18,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:18,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 21:00:18,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:18,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 21:00:18,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 21:00:18,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:00:18,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 1041 transitions, 18568 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:18,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:18,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:00:18,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:21,113 INFO L130 PetriNetUnfolder]: 690/2168 cut-off events. [2022-11-18 21:00:21,113 INFO L131 PetriNetUnfolder]: For 92564/92564 co-relation queries the response was YES. [2022-11-18 21:00:21,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21672 conditions, 2168 events. 690/2168 cut-off events. For 92564/92564 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 17000 event pairs, 43 based on Foata normal form. 1/2166 useless extension candidates. Maximal degree in co-relation 21362. Up to 1656 conditions per place. [2022-11-18 21:00:21,176 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 945 selfloop transitions, 52 changer transitions 24/1060 dead transitions. [2022-11-18 21:00:21,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 845 places, 1060 transitions, 20736 flow [2022-11-18 21:00:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 21:00:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 21:00:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1723 transitions. [2022-11-18 21:00:21,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5554480980012895 [2022-11-18 21:00:21,178 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1723 transitions. [2022-11-18 21:00:21,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1723 transitions. [2022-11-18 21:00:21,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:21,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1723 transitions. [2022-11-18 21:00:21,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.21212121212121) internal successors, (1723), 33 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:21,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:21,181 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:21,181 INFO L175 Difference]: Start difference. First operand has 821 places, 1041 transitions, 18568 flow. Second operand 33 states and 1723 transitions. [2022-11-18 21:00:21,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 845 places, 1060 transitions, 20736 flow [2022-11-18 21:00:22,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 809 places, 1060 transitions, 20200 flow, removed 170 selfloop flow, removed 36 redundant places. [2022-11-18 21:00:22,543 INFO L231 Difference]: Finished difference. Result has 813 places, 1026 transitions, 17990 flow [2022-11-18 21:00:22,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18044, PETRI_DIFFERENCE_MINUEND_PLACES=777, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1041, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=989, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=17990, PETRI_PLACES=813, PETRI_TRANSITIONS=1026} [2022-11-18 21:00:22,543 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 725 predicate places. [2022-11-18 21:00:22,544 INFO L495 AbstractCegarLoop]: Abstraction has has 813 places, 1026 transitions, 17990 flow [2022-11-18 21:00:22,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:22,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:22,544 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:22,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-11-18 21:00:22,544 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:00:22,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:22,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1574806274, now seen corresponding path program 223 times [2022-11-18 21:00:22,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:22,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219637353] [2022-11-18 21:00:22,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:22,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:23,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:23,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219637353] [2022-11-18 21:00:23,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219637353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:23,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:23,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 21:00:23,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718119022] [2022-11-18 21:00:23,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:23,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 21:00:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 21:00:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:00:23,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:00:23,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 1026 transitions, 17990 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:23,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:00:23,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:26,170 INFO L130 PetriNetUnfolder]: 697/2183 cut-off events. [2022-11-18 21:00:26,171 INFO L131 PetriNetUnfolder]: For 92928/92928 co-relation queries the response was YES. [2022-11-18 21:00:26,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21645 conditions, 2183 events. 697/2183 cut-off events. For 92928/92928 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 17184 event pairs, 38 based on Foata normal form. 1/2181 useless extension candidates. Maximal degree in co-relation 21339. Up to 1449 conditions per place. [2022-11-18 21:00:26,230 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 832 selfloop transitions, 201 changer transitions 21/1093 dead transitions. [2022-11-18 21:00:26,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 821 places, 1093 transitions, 21709 flow [2022-11-18 21:00:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 21:00:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 21:00:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2061 transitions. [2022-11-18 21:00:26,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5621931260229133 [2022-11-18 21:00:26,233 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2061 transitions. [2022-11-18 21:00:26,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2061 transitions. [2022-11-18 21:00:26,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:26,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2061 transitions. [2022-11-18 21:00:26,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.84615384615385) internal successors, (2061), 39 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:26,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:26,236 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:26,236 INFO L175 Difference]: Start difference. First operand has 813 places, 1026 transitions, 17990 flow. Second operand 39 states and 2061 transitions. [2022-11-18 21:00:26,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 821 places, 1093 transitions, 21709 flow [2022-11-18 21:00:27,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 1093 transitions, 21122 flow, removed 114 selfloop flow, removed 36 redundant places. [2022-11-18 21:00:27,509 INFO L231 Difference]: Finished difference. Result has 792 places, 1038 transitions, 18360 flow [2022-11-18 21:00:27,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17459, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1026, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18360, PETRI_PLACES=792, PETRI_TRANSITIONS=1038} [2022-11-18 21:00:27,510 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 704 predicate places. [2022-11-18 21:00:27,510 INFO L495 AbstractCegarLoop]: Abstraction has has 792 places, 1038 transitions, 18360 flow [2022-11-18 21:00:27,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:27,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:27,511 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:27,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-11-18 21:00:27,511 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:00:27,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:27,511 INFO L85 PathProgramCache]: Analyzing trace with hash -672498512, now seen corresponding path program 224 times [2022-11-18 21:00:27,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:27,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482128543] [2022-11-18 21:00:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:27,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:27,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:27,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482128543] [2022-11-18 21:00:27,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482128543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:27,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:27,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 21:00:27,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178876622] [2022-11-18 21:00:27,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:27,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:00:27,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:27,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:00:27,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:00:27,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:00:27,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 1038 transitions, 18360 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:27,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:27,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:00:27,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:30,700 INFO L130 PetriNetUnfolder]: 691/2167 cut-off events. [2022-11-18 21:00:30,700 INFO L131 PetriNetUnfolder]: For 85868/85868 co-relation queries the response was YES. [2022-11-18 21:00:30,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20945 conditions, 2167 events. 691/2167 cut-off events. For 85868/85868 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 17024 event pairs, 38 based on Foata normal form. 1/2165 useless extension candidates. Maximal degree in co-relation 20652. Up to 1605 conditions per place. [2022-11-18 21:00:30,756 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 902 selfloop transitions, 111 changer transitions 15/1067 dead transitions. [2022-11-18 21:00:30,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1067 transitions, 20802 flow [2022-11-18 21:00:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 21:00:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 21:00:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1904 transitions. [2022-11-18 21:00:30,758 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626477541371159 [2022-11-18 21:00:30,759 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1904 transitions. [2022-11-18 21:00:30,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1904 transitions. [2022-11-18 21:00:30,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:30,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1904 transitions. [2022-11-18 21:00:30,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.888888888888886) internal successors, (1904), 36 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:30,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:30,762 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:30,762 INFO L175 Difference]: Start difference. First operand has 792 places, 1038 transitions, 18360 flow. Second operand 36 states and 1904 transitions. [2022-11-18 21:00:30,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 1067 transitions, 20802 flow [2022-11-18 21:00:32,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 790 places, 1067 transitions, 20214 flow, removed 162 selfloop flow, removed 32 redundant places. [2022-11-18 21:00:32,107 INFO L231 Difference]: Finished difference. Result has 798 places, 1037 transitions, 18064 flow [2022-11-18 21:00:32,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17784, PETRI_DIFFERENCE_MINUEND_PLACES=755, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=927, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=18064, PETRI_PLACES=798, PETRI_TRANSITIONS=1037} [2022-11-18 21:00:32,108 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 710 predicate places. [2022-11-18 21:00:32,108 INFO L495 AbstractCegarLoop]: Abstraction has has 798 places, 1037 transitions, 18064 flow [2022-11-18 21:00:32,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:32,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:32,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:32,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-11-18 21:00:32,109 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:00:32,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:32,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1622837058, now seen corresponding path program 225 times [2022-11-18 21:00:32,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:32,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157273641] [2022-11-18 21:00:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:32,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:32,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:32,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157273641] [2022-11-18 21:00:32,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157273641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:32,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:32,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 21:00:32,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223736537] [2022-11-18 21:00:32,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:32,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 21:00:32,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:32,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 21:00:32,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:00:32,583 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:00:32,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 1037 transitions, 18064 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:32,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:32,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:00:32,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:35,529 INFO L130 PetriNetUnfolder]: 688/2144 cut-off events. [2022-11-18 21:00:35,529 INFO L131 PetriNetUnfolder]: For 81437/81437 co-relation queries the response was YES. [2022-11-18 21:00:35,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20675 conditions, 2144 events. 688/2144 cut-off events. For 81437/81437 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 16745 event pairs, 41 based on Foata normal form. 1/2142 useless extension candidates. Maximal degree in co-relation 20379. Up to 1598 conditions per place. [2022-11-18 21:00:35,585 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 895 selfloop transitions, 115 changer transitions 15/1064 dead transitions. [2022-11-18 21:00:35,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 829 places, 1064 transitions, 20493 flow [2022-11-18 21:00:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 21:00:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 21:00:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2002 transitions. [2022-11-18 21:00:35,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5604703247480403 [2022-11-18 21:00:35,588 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2002 transitions. [2022-11-18 21:00:35,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2002 transitions. [2022-11-18 21:00:35,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:35,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2002 transitions. [2022-11-18 21:00:35,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.68421052631579) internal successors, (2002), 38 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:35,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:35,592 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:35,592 INFO L175 Difference]: Start difference. First operand has 798 places, 1037 transitions, 18064 flow. Second operand 38 states and 2002 transitions. [2022-11-18 21:00:35,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 829 places, 1064 transitions, 20493 flow [2022-11-18 21:00:36,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 793 places, 1064 transitions, 20188 flow, removed 29 selfloop flow, removed 36 redundant places. [2022-11-18 21:00:36,771 INFO L231 Difference]: Finished difference. Result has 800 places, 1034 transitions, 18048 flow [2022-11-18 21:00:36,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17777, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=18048, PETRI_PLACES=800, PETRI_TRANSITIONS=1034} [2022-11-18 21:00:36,772 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 712 predicate places. [2022-11-18 21:00:36,772 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 1034 transitions, 18048 flow [2022-11-18 21:00:36,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:36,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:36,773 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:36,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-11-18 21:00:36,773 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:00:36,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:36,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1735909186, now seen corresponding path program 226 times [2022-11-18 21:00:36,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:36,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734687191] [2022-11-18 21:00:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:36,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:37,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:37,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:37,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734687191] [2022-11-18 21:00:37,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734687191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:37,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:37,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 21:00:37,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618860602] [2022-11-18 21:00:37,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:37,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 21:00:37,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:37,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 21:00:37,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:00:37,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:00:37,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 1034 transitions, 18048 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:37,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:37,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:00:37,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:39,900 INFO L130 PetriNetUnfolder]: 687/2155 cut-off events. [2022-11-18 21:00:39,900 INFO L131 PetriNetUnfolder]: For 82022/82022 co-relation queries the response was YES. [2022-11-18 21:00:39,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20722 conditions, 2155 events. 687/2155 cut-off events. For 82022/82022 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16891 event pairs, 44 based on Foata normal form. 1/2153 useless extension candidates. Maximal degree in co-relation 20426. Up to 1612 conditions per place. [2022-11-18 21:00:39,955 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 905 selfloop transitions, 97 changer transitions 19/1060 dead transitions. [2022-11-18 21:00:39,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 823 places, 1060 transitions, 20467 flow [2022-11-18 21:00:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 21:00:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 21:00:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1637 transitions. [2022-11-18 21:00:39,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.561770761839396 [2022-11-18 21:00:39,957 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1637 transitions. [2022-11-18 21:00:39,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1637 transitions. [2022-11-18 21:00:39,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:39,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1637 transitions. [2022-11-18 21:00:39,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.806451612903224) internal successors, (1637), 31 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:39,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:39,960 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:39,961 INFO L175 Difference]: Start difference. First operand has 800 places, 1034 transitions, 18048 flow. Second operand 31 states and 1637 transitions. [2022-11-18 21:00:39,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 823 places, 1060 transitions, 20467 flow [2022-11-18 21:00:41,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 788 places, 1060 transitions, 20197 flow, removed 22 selfloop flow, removed 35 redundant places. [2022-11-18 21:00:41,143 INFO L231 Difference]: Finished difference. Result has 795 places, 1030 transitions, 17945 flow [2022-11-18 21:00:41,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17784, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1034, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=937, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=17945, PETRI_PLACES=795, PETRI_TRANSITIONS=1030} [2022-11-18 21:00:41,144 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 707 predicate places. [2022-11-18 21:00:41,144 INFO L495 AbstractCegarLoop]: Abstraction has has 795 places, 1030 transitions, 17945 flow [2022-11-18 21:00:41,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:41,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:41,144 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:41,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-11-18 21:00:41,145 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:00:41,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:41,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1557328624, now seen corresponding path program 227 times [2022-11-18 21:00:41,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:41,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115171761] [2022-11-18 21:00:41,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:41,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:41,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:41,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115171761] [2022-11-18 21:00:41,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115171761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:41,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:41,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 21:00:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633874012] [2022-11-18 21:00:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 21:00:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:41,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 21:00:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:00:41,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:00:41,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 795 places, 1030 transitions, 17945 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:41,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:41,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:00:41,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:44,790 INFO L130 PetriNetUnfolder]: 724/2279 cut-off events. [2022-11-18 21:00:44,790 INFO L131 PetriNetUnfolder]: For 89749/89749 co-relation queries the response was YES. [2022-11-18 21:00:44,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21999 conditions, 2279 events. 724/2279 cut-off events. For 89749/89749 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 18228 event pairs, 43 based on Foata normal form. 1/2277 useless extension candidates. Maximal degree in co-relation 21702. Up to 1589 conditions per place. [2022-11-18 21:00:44,856 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 895 selfloop transitions, 163 changer transitions 42/1139 dead transitions. [2022-11-18 21:00:44,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 823 places, 1139 transitions, 22388 flow [2022-11-18 21:00:44,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 21:00:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 21:00:44,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1958 transitions. [2022-11-18 21:00:44,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5629672225416906 [2022-11-18 21:00:44,859 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1958 transitions. [2022-11-18 21:00:44,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1958 transitions. [2022-11-18 21:00:44,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:44,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1958 transitions. [2022-11-18 21:00:44,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.91891891891892) internal successors, (1958), 37 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:44,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:44,863 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:44,863 INFO L175 Difference]: Start difference. First operand has 795 places, 1030 transitions, 17945 flow. Second operand 37 states and 1958 transitions. [2022-11-18 21:00:44,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 823 places, 1139 transitions, 22388 flow [2022-11-18 21:00:46,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 1139 transitions, 22109 flow, removed 17 selfloop flow, removed 31 redundant places. [2022-11-18 21:00:46,256 INFO L231 Difference]: Finished difference. Result has 808 places, 1079 transitions, 19352 flow [2022-11-18 21:00:46,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17692, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=872, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=19352, PETRI_PLACES=808, PETRI_TRANSITIONS=1079} [2022-11-18 21:00:46,257 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 720 predicate places. [2022-11-18 21:00:46,257 INFO L495 AbstractCegarLoop]: Abstraction has has 808 places, 1079 transitions, 19352 flow [2022-11-18 21:00:46,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:46,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:46,257 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:46,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-11-18 21:00:46,257 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:00:46,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:46,258 INFO L85 PathProgramCache]: Analyzing trace with hash -6981524, now seen corresponding path program 228 times [2022-11-18 21:00:46,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:46,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698717406] [2022-11-18 21:00:46,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:46,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:46,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:46,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698717406] [2022-11-18 21:00:46,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698717406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:46,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:46,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 21:00:46,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451649894] [2022-11-18 21:00:46,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:46,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 21:00:46,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:46,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 21:00:46,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-18 21:00:46,799 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:00:46,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 1079 transitions, 19352 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:46,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:46,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:00:46,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:50,240 INFO L130 PetriNetUnfolder]: 710/2242 cut-off events. [2022-11-18 21:00:50,240 INFO L131 PetriNetUnfolder]: For 91217/91217 co-relation queries the response was YES. [2022-11-18 21:00:50,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22140 conditions, 2242 events. 710/2242 cut-off events. For 91217/91217 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17801 event pairs, 40 based on Foata normal form. 1/2240 useless extension candidates. Maximal degree in co-relation 21834. Up to 1488 conditions per place. [2022-11-18 21:00:50,302 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 871 selfloop transitions, 212 changer transitions 20/1142 dead transitions. [2022-11-18 21:00:50,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 843 places, 1142 transitions, 23195 flow [2022-11-18 21:00:50,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 21:00:50,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 21:00:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2313 transitions. [2022-11-18 21:00:50,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592359767891683 [2022-11-18 21:00:50,305 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2313 transitions. [2022-11-18 21:00:50,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2313 transitions. [2022-11-18 21:00:50,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:50,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2313 transitions. [2022-11-18 21:00:50,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.56818181818182) internal successors, (2313), 44 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:50,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:50,309 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:50,309 INFO L175 Difference]: Start difference. First operand has 808 places, 1079 transitions, 19352 flow. Second operand 44 states and 2313 transitions. [2022-11-18 21:00:50,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 843 places, 1142 transitions, 23195 flow [2022-11-18 21:00:51,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 820 places, 1142 transitions, 22847 flow, removed 117 selfloop flow, removed 23 redundant places. [2022-11-18 21:00:51,684 INFO L231 Difference]: Finished difference. Result has 830 places, 1088 transitions, 19900 flow [2022-11-18 21:00:51,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19028, PETRI_DIFFERENCE_MINUEND_PLACES=777, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=872, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=19900, PETRI_PLACES=830, PETRI_TRANSITIONS=1088} [2022-11-18 21:00:51,685 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 742 predicate places. [2022-11-18 21:00:51,685 INFO L495 AbstractCegarLoop]: Abstraction has has 830 places, 1088 transitions, 19900 flow [2022-11-18 21:00:51,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:51,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:51,685 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:51,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-11-18 21:00:51,685 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:00:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1276319974, now seen corresponding path program 229 times [2022-11-18 21:00:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:51,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141280442] [2022-11-18 21:00:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:52,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:52,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141280442] [2022-11-18 21:00:52,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141280442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:52,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:52,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 21:00:52,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685197937] [2022-11-18 21:00:52,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:52,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:00:52,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:52,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:00:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:00:52,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:00:52,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 830 places, 1088 transitions, 19900 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:52,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:52,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:00:52,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:55,496 INFO L130 PetriNetUnfolder]: 711/2238 cut-off events. [2022-11-18 21:00:55,497 INFO L131 PetriNetUnfolder]: For 93332/93332 co-relation queries the response was YES. [2022-11-18 21:00:55,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22346 conditions, 2238 events. 711/2238 cut-off events. For 93332/93332 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17747 event pairs, 40 based on Foata normal form. 1/2236 useless extension candidates. Maximal degree in co-relation 22036. Up to 1509 conditions per place. [2022-11-18 21:00:55,549 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 858 selfloop transitions, 200 changer transitions 41/1138 dead transitions. [2022-11-18 21:00:55,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 856 places, 1138 transitions, 23177 flow [2022-11-18 21:00:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 21:00:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 21:00:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1757 transitions. [2022-11-18 21:00:55,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664087685364281 [2022-11-18 21:00:55,551 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1757 transitions. [2022-11-18 21:00:55,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1757 transitions. [2022-11-18 21:00:55,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:55,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1757 transitions. [2022-11-18 21:00:55,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.24242424242424) internal successors, (1757), 33 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:55,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:55,557 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:55,557 INFO L175 Difference]: Start difference. First operand has 830 places, 1088 transitions, 19900 flow. Second operand 33 states and 1757 transitions. [2022-11-18 21:00:55,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 856 places, 1138 transitions, 23177 flow [2022-11-18 21:00:56,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 823 places, 1138 transitions, 22516 flow, removed 180 selfloop flow, removed 33 redundant places. [2022-11-18 21:00:57,006 INFO L231 Difference]: Finished difference. Result has 832 places, 1076 transitions, 19582 flow [2022-11-18 21:00:57,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19269, PETRI_DIFFERENCE_MINUEND_PLACES=791, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1088, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=892, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=19582, PETRI_PLACES=832, PETRI_TRANSITIONS=1076} [2022-11-18 21:00:57,007 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 744 predicate places. [2022-11-18 21:00:57,007 INFO L495 AbstractCegarLoop]: Abstraction has has 832 places, 1076 transitions, 19582 flow [2022-11-18 21:00:57,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:57,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:57,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:57,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-11-18 21:00:57,008 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:00:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1451321272, now seen corresponding path program 230 times [2022-11-18 21:00:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:57,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734449820] [2022-11-18 21:00:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:57,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:57,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734449820] [2022-11-18 21:00:57,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734449820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:57,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:57,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 21:00:57,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609495300] [2022-11-18 21:00:57,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:57,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:00:57,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:00:57,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:00:57,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:00:57,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 832 places, 1076 transitions, 19582 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:57,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:57,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:00:57,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:00,378 INFO L130 PetriNetUnfolder]: 693/2198 cut-off events. [2022-11-18 21:01:00,378 INFO L131 PetriNetUnfolder]: For 89276/89276 co-relation queries the response was YES. [2022-11-18 21:01:00,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22016 conditions, 2198 events. 693/2198 cut-off events. For 89276/89276 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 17417 event pairs, 38 based on Foata normal form. 1/2196 useless extension candidates. Maximal degree in co-relation 21703. Up to 1483 conditions per place. [2022-11-18 21:01:00,439 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 852 selfloop transitions, 225 changer transitions 18/1134 dead transitions. [2022-11-18 21:01:00,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 853 places, 1134 transitions, 23182 flow [2022-11-18 21:01:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 21:01:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 21:01:00,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1651 transitions. [2022-11-18 21:01:00,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5665751544269046 [2022-11-18 21:01:00,441 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1651 transitions. [2022-11-18 21:01:00,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1651 transitions. [2022-11-18 21:01:00,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:00,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1651 transitions. [2022-11-18 21:01:00,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.25806451612903) internal successors, (1651), 31 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:00,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:00,445 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:00,445 INFO L175 Difference]: Start difference. First operand has 832 places, 1076 transitions, 19582 flow. Second operand 31 states and 1651 transitions. [2022-11-18 21:01:00,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 853 places, 1134 transitions, 23182 flow [2022-11-18 21:01:01,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 821 places, 1134 transitions, 22562 flow, removed 59 selfloop flow, removed 32 redundant places. [2022-11-18 21:01:01,878 INFO L231 Difference]: Finished difference. Result has 828 places, 1093 transitions, 20112 flow [2022-11-18 21:01:01,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19003, PETRI_DIFFERENCE_MINUEND_PLACES=791, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=856, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=20112, PETRI_PLACES=828, PETRI_TRANSITIONS=1093} [2022-11-18 21:01:01,879 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 740 predicate places. [2022-11-18 21:01:01,879 INFO L495 AbstractCegarLoop]: Abstraction has has 828 places, 1093 transitions, 20112 flow [2022-11-18 21:01:01,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:01,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:01,879 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:01,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-11-18 21:01:01,880 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:01:01,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash 626129338, now seen corresponding path program 231 times [2022-11-18 21:01:01,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:01,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42704220] [2022-11-18 21:01:01,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:01,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:02,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:02,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42704220] [2022-11-18 21:01:02,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42704220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:02,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:02,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 21:01:02,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862970478] [2022-11-18 21:01:02,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:02,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:01:02,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:02,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:01:02,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:01:02,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:01:02,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 1093 transitions, 20112 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:02,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:02,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:01:02,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:04,969 INFO L130 PetriNetUnfolder]: 687/2164 cut-off events. [2022-11-18 21:01:04,969 INFO L131 PetriNetUnfolder]: For 87909/87909 co-relation queries the response was YES. [2022-11-18 21:01:05,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21636 conditions, 2164 events. 687/2164 cut-off events. For 87909/87909 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 17001 event pairs, 40 based on Foata normal form. 1/2162 useless extension candidates. Maximal degree in co-relation 21327. Up to 1606 conditions per place. [2022-11-18 21:01:05,031 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 942 selfloop transitions, 111 changer transitions 24/1116 dead transitions. [2022-11-18 21:01:05,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 857 places, 1116 transitions, 22437 flow [2022-11-18 21:01:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 21:01:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 21:01:05,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1852 transitions. [2022-11-18 21:01:05,034 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562917933130699 [2022-11-18 21:01:05,034 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1852 transitions. [2022-11-18 21:01:05,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1852 transitions. [2022-11-18 21:01:05,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:05,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1852 transitions. [2022-11-18 21:01:05,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.91428571428571) internal successors, (1852), 35 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:05,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:05,037 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:05,037 INFO L175 Difference]: Start difference. First operand has 828 places, 1093 transitions, 20112 flow. Second operand 35 states and 1852 transitions. [2022-11-18 21:01:05,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 857 places, 1116 transitions, 22437 flow [2022-11-18 21:01:06,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 832 places, 1116 transitions, 21871 flow, removed 158 selfloop flow, removed 25 redundant places. [2022-11-18 21:01:06,428 INFO L231 Difference]: Finished difference. Result has 837 places, 1078 transitions, 19602 flow [2022-11-18 21:01:06,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19552, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1093, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=982, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=19602, PETRI_PLACES=837, PETRI_TRANSITIONS=1078} [2022-11-18 21:01:06,429 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 749 predicate places. [2022-11-18 21:01:06,429 INFO L495 AbstractCegarLoop]: Abstraction has has 837 places, 1078 transitions, 19602 flow [2022-11-18 21:01:06,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:06,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:06,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:06,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-11-18 21:01:06,429 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:01:06,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1335145658, now seen corresponding path program 232 times [2022-11-18 21:01:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:06,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339145663] [2022-11-18 21:01:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:06,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:06,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:06,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339145663] [2022-11-18 21:01:06,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339145663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:06,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:06,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 21:01:06,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294093018] [2022-11-18 21:01:06,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:06,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:01:06,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:06,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:01:06,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:01:06,887 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:01:06,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 837 places, 1078 transitions, 19602 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:06,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:06,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:01:06,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:09,877 INFO L130 PetriNetUnfolder]: 695/2191 cut-off events. [2022-11-18 21:01:09,877 INFO L131 PetriNetUnfolder]: For 81677/81677 co-relation queries the response was YES. [2022-11-18 21:01:09,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21742 conditions, 2191 events. 695/2191 cut-off events. For 81677/81677 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 17299 event pairs, 38 based on Foata normal form. 1/2189 useless extension candidates. Maximal degree in co-relation 21432. Up to 1572 conditions per place. [2022-11-18 21:01:09,939 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 920 selfloop transitions, 143 changer transitions 27/1129 dead transitions. [2022-11-18 21:01:09,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 856 places, 1129 transitions, 22873 flow [2022-11-18 21:01:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 21:01:09,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 21:01:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1750 transitions. [2022-11-18 21:01:09,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641521598968408 [2022-11-18 21:01:09,941 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1750 transitions. [2022-11-18 21:01:09,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1750 transitions. [2022-11-18 21:01:09,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:09,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1750 transitions. [2022-11-18 21:01:09,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.03030303030303) internal successors, (1750), 33 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:09,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:09,945 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:09,945 INFO L175 Difference]: Start difference. First operand has 837 places, 1078 transitions, 19602 flow. Second operand 33 states and 1750 transitions. [2022-11-18 21:01:09,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 856 places, 1129 transitions, 22873 flow [2022-11-18 21:01:11,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 1129 transitions, 22481 flow, removed 29 selfloop flow, removed 38 redundant places. [2022-11-18 21:01:11,386 INFO L231 Difference]: Finished difference. Result has 829 places, 1085 transitions, 19819 flow [2022-11-18 21:01:11,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19226, PETRI_DIFFERENCE_MINUEND_PLACES=786, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=936, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=19819, PETRI_PLACES=829, PETRI_TRANSITIONS=1085} [2022-11-18 21:01:11,387 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 741 predicate places. [2022-11-18 21:01:11,387 INFO L495 AbstractCegarLoop]: Abstraction has has 829 places, 1085 transitions, 19819 flow [2022-11-18 21:01:11,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:11,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:11,387 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:11,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-11-18 21:01:11,387 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:01:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:11,388 INFO L85 PathProgramCache]: Analyzing trace with hash -968448580, now seen corresponding path program 233 times [2022-11-18 21:01:11,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:11,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126302771] [2022-11-18 21:01:11,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:11,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:11,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:11,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126302771] [2022-11-18 21:01:11,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126302771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:11,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:11,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 21:01:11,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062798043] [2022-11-18 21:01:11,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:11,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:01:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:11,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:01:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:01:11,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-18 21:01:11,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 829 places, 1085 transitions, 19819 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:11,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:11,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-18 21:01:11,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand