./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/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_725ecc3f-cefb-4980-acec-bf0cd43b9857/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/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_725ecc3f-cefb-4980-acec-bf0cd43b9857/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 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --- 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 19:53:51,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:53:51,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:53:51,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:53:51,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:53:51,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:53:51,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:53:51,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:53:51,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:53:51,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:53:51,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:53:51,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:53:51,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:53:51,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:53:51,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:53:51,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:53:51,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:53:51,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:53:51,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:53:51,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:53:51,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:53:51,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:53:51,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:53:51,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:53:51,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:53:51,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:53:51,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:53:51,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:53:51,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:53:51,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:53:51,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:53:51,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:53:51,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:53:51,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:53:51,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:53:51,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:53:51,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:53:51,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:53:51,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:53:51,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:53:51,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:53:51,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:53:51,454 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:53:51,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:53:51,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:53:51,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:53:51,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:53:51,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:53:51,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:53:51,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:53:51,470 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:53:51,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:53:51,472 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:53:51,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:53:51,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:53:51,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:53:51,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:53:51,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:53:51,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:53:51,473 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:53:51,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:53:51,474 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:53:51,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:53:51,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:53:51,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:53:51,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:53:51,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:51,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:53:51,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:53:51,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:53:51,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:53:51,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:53:51,477 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:53:51,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:53:51,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:53:51,478 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_725ecc3f-cefb-4980-acec-bf0cd43b9857/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 [2022-11-18 19:53:51,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:53:51,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:53:51,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:53:51,826 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:53:51,831 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:53:51,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-11-18 19:53:51,927 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/bin/uautomizer-TMbwUNV5ro/data/163cf8b6a/b6ab4b97591249708dccdbcb130e85ef/FLAG9dea3280a [2022-11-18 19:53:52,543 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:53:52,548 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-11-18 19:53:52,583 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/bin/uautomizer-TMbwUNV5ro/data/163cf8b6a/b6ab4b97591249708dccdbcb130e85ef/FLAG9dea3280a [2022-11-18 19:53:52,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/bin/uautomizer-TMbwUNV5ro/data/163cf8b6a/b6ab4b97591249708dccdbcb130e85ef [2022-11-18 19:53:52,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:53:52,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:53:52,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:52,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:53:52,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:53:52,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54646fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52, skipping insertion in model container [2022-11-18 19:53:52,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:53:52,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:53:53,867 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_725ecc3f-cefb-4980-acec-bf0cd43b9857/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-11-18 19:53:53,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:53,926 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:53:54,012 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_725ecc3f-cefb-4980-acec-bf0cd43b9857/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-11-18 19:53:54,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:54,172 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:53:54,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54 WrapperNode [2022-11-18 19:53:54,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:54,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:54,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:53:54,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:53:54,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54" (1/1) ... [2022-11-18 19:53:54,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54" (1/1) ... [2022-11-18 19:53:54,240 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-11-18 19:53:54,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:54,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:53:54,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:53:54,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:53:54,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54" (1/1) ... [2022-11-18 19:53:54,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54" (1/1) ... [2022-11-18 19:53:54,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54" (1/1) ... [2022-11-18 19:53:54,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54" (1/1) ... [2022-11-18 19:53:54,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54" (1/1) ... [2022-11-18 19:53:54,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54" (1/1) ... [2022-11-18 19:53:54,283 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54" (1/1) ... [2022-11-18 19:53:54,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54" (1/1) ... [2022-11-18 19:53:54,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:53:54,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:53:54,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:53:54,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:53:54,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54" (1/1) ... [2022-11-18 19:53:54,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:54,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:54,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:53:54,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725ecc3f-cefb-4980-acec-bf0cd43b9857/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:53:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:53:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:53:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:53:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:53:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:53:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:53:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:53:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-18 19:53:54,382 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-18 19:53:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:53:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:53:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:53:54,384 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 19:53:54,800 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:53:54,803 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:53:55,113 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:53:55,122 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:53:55,122 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:53:55,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:55 BoogieIcfgContainer [2022-11-18 19:53:55,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:53:55,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:53:55,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:53:55,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:53:55,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:53:52" (1/3) ... [2022-11-18 19:53:55,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e446a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:55, skipping insertion in model container [2022-11-18 19:53:55,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:54" (2/3) ... [2022-11-18 19:53:55,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e446a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:55, skipping insertion in model container [2022-11-18 19:53:55,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:55" (3/3) ... [2022-11-18 19:53:55,136 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2022-11-18 19:53:55,146 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:53:55,158 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:53:55,158 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 19:53:55,159 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:53:55,246 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:53:55,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 194 transitions, 404 flow [2022-11-18 19:53:55,427 INFO L130 PetriNetUnfolder]: 10/239 cut-off events. [2022-11-18 19:53:55,427 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:53:55,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 239 events. 10/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 391 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-11-18 19:53:55,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 194 transitions, 404 flow [2022-11-18 19:53:55,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 180 transitions, 372 flow [2022-11-18 19:53:55,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:53:55,464 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;@37fcabfb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:53:55,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-18 19:53:55,478 INFO L130 PetriNetUnfolder]: 0/46 cut-off events. [2022-11-18 19:53:55,478 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:53:55,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:55,479 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] [2022-11-18 19:53:55,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:53:55,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:55,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1601492140, now seen corresponding path program 1 times [2022-11-18 19:53:55,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:55,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085499065] [2022-11-18 19:53:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:55,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:56,487 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 19:53:56,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:56,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085499065] [2022-11-18 19:53:56,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085499065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:56,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:56,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:53:56,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579582020] [2022-11-18 19:53:56,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:56,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:56,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:56,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:53:56,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 194 [2022-11-18 19:53:56,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 180 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:56,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:56,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 194 [2022-11-18 19:53:56,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:57,118 INFO L130 PetriNetUnfolder]: 361/1044 cut-off events. [2022-11-18 19:53:57,118 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-18 19:53:57,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1044 events. 361/1044 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6063 event pairs, 216 based on Foata normal form. 20/1010 useless extension candidates. Maximal degree in co-relation 1486. Up to 397 conditions per place. [2022-11-18 19:53:57,136 INFO L137 encePairwiseOnDemand]: 172/194 looper letters, 53 selfloop transitions, 17 changer transitions 1/176 dead transitions. [2022-11-18 19:53:57,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 176 transitions, 506 flow [2022-11-18 19:53:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:53:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:53:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1129 transitions. [2022-11-18 19:53:57,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6466208476517755 [2022-11-18 19:53:57,173 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1129 transitions. [2022-11-18 19:53:57,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1129 transitions. [2022-11-18 19:53:57,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:57,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1129 transitions. [2022-11-18 19:53:57,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.44444444444444) internal successors, (1129), 9 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:57,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:57,207 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:57,209 INFO L175 Difference]: Start difference. First operand has 180 places, 180 transitions, 372 flow. Second operand 9 states and 1129 transitions. [2022-11-18 19:53:57,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 176 transitions, 506 flow [2022-11-18 19:53:57,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 176 transitions, 498 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:53:57,223 INFO L231 Difference]: Finished difference. Result has 178 places, 169 transitions, 383 flow [2022-11-18 19:53:57,226 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=383, PETRI_PLACES=178, PETRI_TRANSITIONS=169} [2022-11-18 19:53:57,231 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -2 predicate places. [2022-11-18 19:53:57,232 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 169 transitions, 383 flow [2022-11-18 19:53:57,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:57,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:57,234 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] [2022-11-18 19:53:57,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:53:57,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:53:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:57,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2026236765, now seen corresponding path program 1 times [2022-11-18 19:53:57,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:57,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580981422] [2022-11-18 19:53:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:57,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:57,638 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 19:53:57,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:57,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580981422] [2022-11-18 19:53:57,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580981422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:57,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:57,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:53:57,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209176800] [2022-11-18 19:53:57,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:57,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:57,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:57,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:57,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:53:57,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 194 [2022-11-18 19:53:57,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 169 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:57,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:57,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 194 [2022-11-18 19:53:57,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:58,097 INFO L130 PetriNetUnfolder]: 361/1014 cut-off events. [2022-11-18 19:53:58,102 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-18 19:53:58,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 1014 events. 361/1014 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5685 event pairs, 120 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 881. Up to 261 conditions per place. [2022-11-18 19:53:58,112 INFO L137 encePairwiseOnDemand]: 175/194 looper letters, 61 selfloop transitions, 18 changer transitions 1/184 dead transitions. [2022-11-18 19:53:58,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 184 transitions, 575 flow [2022-11-18 19:53:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:53:58,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:53:58,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1251 transitions. [2022-11-18 19:53:58,117 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6448453608247423 [2022-11-18 19:53:58,117 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1251 transitions. [2022-11-18 19:53:58,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1251 transitions. [2022-11-18 19:53:58,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:58,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1251 transitions. [2022-11-18 19:53:58,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:58,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 194.0) internal successors, (2134), 11 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:58,130 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 194.0) internal successors, (2134), 11 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:58,131 INFO L175 Difference]: Start difference. First operand has 178 places, 169 transitions, 383 flow. Second operand 10 states and 1251 transitions. [2022-11-18 19:53:58,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 184 transitions, 575 flow [2022-11-18 19:53:58,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 184 transitions, 546 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 19:53:58,144 INFO L231 Difference]: Finished difference. Result has 179 places, 168 transitions, 394 flow [2022-11-18 19:53:58,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=394, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-11-18 19:53:58,145 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -1 predicate places. [2022-11-18 19:53:58,146 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 394 flow [2022-11-18 19:53:58,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:58,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:58,147 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] [2022-11-18 19:53:58,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:53:58,148 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:53:58,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:58,150 INFO L85 PathProgramCache]: Analyzing trace with hash -604445297, now seen corresponding path program 1 times [2022-11-18 19:53:58,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:58,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407153643] [2022-11-18 19:53:58,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:58,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:58,682 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 19:53:58,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:58,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407153643] [2022-11-18 19:53:58,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407153643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:58,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:58,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:53:58,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673659423] [2022-11-18 19:53:58,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:58,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:58,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:58,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:58,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:53:58,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 194 [2022-11-18 19:53:58,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:58,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:58,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 194 [2022-11-18 19:53:58,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:59,578 INFO L130 PetriNetUnfolder]: 832/2091 cut-off events. [2022-11-18 19:53:59,578 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-11-18 19:53:59,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3834 conditions, 2091 events. 832/2091 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14015 event pairs, 169 based on Foata normal form. 32/2090 useless extension candidates. Maximal degree in co-relation 1026. Up to 499 conditions per place. [2022-11-18 19:53:59,594 INFO L137 encePairwiseOnDemand]: 173/194 looper letters, 100 selfloop transitions, 49 changer transitions 0/253 dead transitions. [2022-11-18 19:53:59,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 253 transitions, 878 flow [2022-11-18 19:53:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:53:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:53:59,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1644 transitions. [2022-11-18 19:53:59,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6518636003172086 [2022-11-18 19:53:59,600 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1644 transitions. [2022-11-18 19:53:59,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1644 transitions. [2022-11-18 19:53:59,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:59,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1644 transitions. [2022-11-18 19:53:59,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.46153846153847) internal successors, (1644), 13 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:59,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:59,613 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:59,613 INFO L175 Difference]: Start difference. First operand has 179 places, 168 transitions, 394 flow. Second operand 13 states and 1644 transitions. [2022-11-18 19:53:59,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 253 transitions, 878 flow [2022-11-18 19:53:59,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 253 transitions, 832 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 19:53:59,622 INFO L231 Difference]: Finished difference. Result has 191 places, 205 transitions, 664 flow [2022-11-18 19:53:59,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=664, PETRI_PLACES=191, PETRI_TRANSITIONS=205} [2022-11-18 19:53:59,624 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 11 predicate places. [2022-11-18 19:53:59,624 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 205 transitions, 664 flow [2022-11-18 19:53:59,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:59,625 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:59,625 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, 1, 1, 1, 1, 1] [2022-11-18 19:53:59,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:53:59,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:53:59,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:59,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1604748401, now seen corresponding path program 1 times [2022-11-18 19:53:59,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:59,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407192568] [2022-11-18 19:53:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:59,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:00,084 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 19:54:00,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:00,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407192568] [2022-11-18 19:54:00,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407192568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:00,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:00,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:54:00,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235486445] [2022-11-18 19:54:00,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:00,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:54:00,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:00,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:54:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:54:00,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 194 [2022-11-18 19:54:00,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 205 transitions, 664 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:00,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:00,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 194 [2022-11-18 19:54:00,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:01,110 INFO L130 PetriNetUnfolder]: 1084/2665 cut-off events. [2022-11-18 19:54:01,111 INFO L131 PetriNetUnfolder]: For 10877/10958 co-relation queries the response was YES. [2022-11-18 19:54:01,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9159 conditions, 2665 events. 1084/2665 cut-off events. For 10877/10958 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 19272 event pairs, 218 based on Foata normal form. 47/2679 useless extension candidates. Maximal degree in co-relation 7850. Up to 732 conditions per place. [2022-11-18 19:54:01,140 INFO L137 encePairwiseOnDemand]: 175/194 looper letters, 74 selfloop transitions, 48 changer transitions 69/294 dead transitions. [2022-11-18 19:54:01,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 294 transitions, 1748 flow [2022-11-18 19:54:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:54:01,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:54:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1395 transitions. [2022-11-18 19:54:01,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6537019681349578 [2022-11-18 19:54:01,146 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1395 transitions. [2022-11-18 19:54:01,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1395 transitions. [2022-11-18 19:54:01,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:01,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1395 transitions. [2022-11-18 19:54:01,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.81818181818181) internal successors, (1395), 11 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:01,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:01,162 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:01,163 INFO L175 Difference]: Start difference. First operand has 191 places, 205 transitions, 664 flow. Second operand 11 states and 1395 transitions. [2022-11-18 19:54:01,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 294 transitions, 1748 flow [2022-11-18 19:54:01,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 294 transitions, 1748 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:54:01,195 INFO L231 Difference]: Finished difference. Result has 209 places, 211 transitions, 977 flow [2022-11-18 19:54:01,196 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=977, PETRI_PLACES=209, PETRI_TRANSITIONS=211} [2022-11-18 19:54:01,197 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 29 predicate places. [2022-11-18 19:54:01,198 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 211 transitions, 977 flow [2022-11-18 19:54:01,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:01,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:01,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:01,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:54:01,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:01,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:01,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2102628772, now seen corresponding path program 1 times [2022-11-18 19:54:01,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:01,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075932160] [2022-11-18 19:54:01,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:01,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:01,440 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 19:54:01,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:01,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075932160] [2022-11-18 19:54:01,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075932160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:01,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:01,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:54:01,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752423952] [2022-11-18 19:54:01,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:01,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:54:01,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:01,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:54:01,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:54:01,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 194 [2022-11-18 19:54:01,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 211 transitions, 977 flow. Second operand has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:01,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:01,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 194 [2022-11-18 19:54:01,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:01,551 INFO L130 PetriNetUnfolder]: 4/167 cut-off events. [2022-11-18 19:54:01,552 INFO L131 PetriNetUnfolder]: For 459/531 co-relation queries the response was YES. [2022-11-18 19:54:01,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 167 events. 4/167 cut-off events. For 459/531 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 188 event pairs, 4 based on Foata normal form. 8/173 useless extension candidates. Maximal degree in co-relation 336. Up to 13 conditions per place. [2022-11-18 19:54:01,553 INFO L137 encePairwiseOnDemand]: 189/194 looper letters, 9 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2022-11-18 19:54:01,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 139 transitions, 436 flow [2022-11-18 19:54:01,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:54:01,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:54:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1016 transitions. [2022-11-18 19:54:01,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.872852233676976 [2022-11-18 19:54:01,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1016 transitions. [2022-11-18 19:54:01,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1016 transitions. [2022-11-18 19:54:01,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:01,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1016 transitions. [2022-11-18 19:54:01,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:01,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:01,567 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:01,568 INFO L175 Difference]: Start difference. First operand has 209 places, 211 transitions, 977 flow. Second operand 6 states and 1016 transitions. [2022-11-18 19:54:01,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 139 transitions, 436 flow [2022-11-18 19:54:01,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 139 transitions, 316 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-11-18 19:54:01,573 INFO L231 Difference]: Finished difference. Result has 152 places, 139 transitions, 298 flow [2022-11-18 19:54:01,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-11-18 19:54:01,577 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -28 predicate places. [2022-11-18 19:54:01,578 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 298 flow [2022-11-18 19:54:01,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:01,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:01,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:01,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:54:01,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:01,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:01,581 INFO L85 PathProgramCache]: Analyzing trace with hash 844407423, now seen corresponding path program 1 times [2022-11-18 19:54:01,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:01,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237565171] [2022-11-18 19:54:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:01,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:03,337 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 19:54:03,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:03,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237565171] [2022-11-18 19:54:03,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237565171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:03,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:03,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:03,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107130519] [2022-11-18 19:54:03,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:03,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:03,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:03,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:03,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:03,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:54:03,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:03,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:03,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:54:03,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:03,798 INFO L130 PetriNetUnfolder]: 88/403 cut-off events. [2022-11-18 19:54:03,798 INFO L131 PetriNetUnfolder]: For 45/189 co-relation queries the response was YES. [2022-11-18 19:54:03,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 403 events. 88/403 cut-off events. For 45/189 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1546 event pairs, 18 based on Foata normal form. 7/404 useless extension candidates. Maximal degree in co-relation 672. Up to 68 conditions per place. [2022-11-18 19:54:03,802 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 54 selfloop transitions, 9 changer transitions 0/179 dead transitions. [2022-11-18 19:54:03,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 179 transitions, 531 flow [2022-11-18 19:54:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:54:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:54:03,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1177 transitions. [2022-11-18 19:54:03,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8667157584683358 [2022-11-18 19:54:03,806 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1177 transitions. [2022-11-18 19:54:03,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1177 transitions. [2022-11-18 19:54:03,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:03,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1177 transitions. [2022-11-18 19:54:03,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:03,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:03,815 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:03,815 INFO L175 Difference]: Start difference. First operand has 152 places, 139 transitions, 298 flow. Second operand 7 states and 1177 transitions. [2022-11-18 19:54:03,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 179 transitions, 531 flow [2022-11-18 19:54:03,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 179 transitions, 524 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:54:03,820 INFO L231 Difference]: Finished difference. Result has 157 places, 145 transitions, 340 flow [2022-11-18 19:54:03,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=157, PETRI_TRANSITIONS=145} [2022-11-18 19:54:03,823 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -23 predicate places. [2022-11-18 19:54:03,824 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 145 transitions, 340 flow [2022-11-18 19:54:03,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:03,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:03,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:03,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:54:03,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:03,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:03,826 INFO L85 PathProgramCache]: Analyzing trace with hash 313300295, now seen corresponding path program 2 times [2022-11-18 19:54:03,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:03,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672920970] [2022-11-18 19:54:03,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:03,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:06,060 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 19:54:06,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:06,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672920970] [2022-11-18 19:54:06,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672920970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:06,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:06,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:54:06,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081750110] [2022-11-18 19:54:06,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:06,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:54:06,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:06,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:54:06,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:54:06,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-11-18 19:54:06,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 145 transitions, 340 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:06,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:06,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-11-18 19:54:06,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:07,627 INFO L130 PetriNetUnfolder]: 583/1594 cut-off events. [2022-11-18 19:54:07,628 INFO L131 PetriNetUnfolder]: For 510/514 co-relation queries the response was YES. [2022-11-18 19:54:07,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3450 conditions, 1594 events. 583/1594 cut-off events. For 510/514 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 10326 event pairs, 95 based on Foata normal form. 3/1556 useless extension candidates. Maximal degree in co-relation 3439. Up to 337 conditions per place. [2022-11-18 19:54:07,640 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 140 selfloop transitions, 33 changer transitions 0/246 dead transitions. [2022-11-18 19:54:07,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 246 transitions, 970 flow [2022-11-18 19:54:07,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:54:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 19:54:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1967 transitions. [2022-11-18 19:54:07,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5336408030385241 [2022-11-18 19:54:07,648 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1967 transitions. [2022-11-18 19:54:07,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1967 transitions. [2022-11-18 19:54:07,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:07,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1967 transitions. [2022-11-18 19:54:07,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.52631578947368) internal successors, (1967), 19 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:07,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:07,664 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:07,664 INFO L175 Difference]: Start difference. First operand has 157 places, 145 transitions, 340 flow. Second operand 19 states and 1967 transitions. [2022-11-18 19:54:07,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 246 transitions, 970 flow [2022-11-18 19:54:07,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 246 transitions, 967 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:54:07,677 INFO L231 Difference]: Finished difference. Result has 180 places, 166 transitions, 515 flow [2022-11-18 19:54:07,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=515, PETRI_PLACES=180, PETRI_TRANSITIONS=166} [2022-11-18 19:54:07,678 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 0 predicate places. [2022-11-18 19:54:07,679 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 166 transitions, 515 flow [2022-11-18 19:54:07,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:07,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:07,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:07,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:54:07,682 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:07,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:07,683 INFO L85 PathProgramCache]: Analyzing trace with hash -270190379, now seen corresponding path program 3 times [2022-11-18 19:54:07,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:07,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712820466] [2022-11-18 19:54:07,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:07,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:09,689 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 19:54:09,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:09,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712820466] [2022-11-18 19:54:09,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712820466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:09,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:09,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:54:09,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822377155] [2022-11-18 19:54:09,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:09,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:54:09,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:09,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:54:09,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:54:09,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-11-18 19:54:09,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 166 transitions, 515 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:09,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:09,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-11-18 19:54:09,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:11,127 INFO L130 PetriNetUnfolder]: 729/2084 cut-off events. [2022-11-18 19:54:11,127 INFO L131 PetriNetUnfolder]: For 1538/1552 co-relation queries the response was YES. [2022-11-18 19:54:11,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5073 conditions, 2084 events. 729/2084 cut-off events. For 1538/1552 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 14910 event pairs, 317 based on Foata normal form. 5/2036 useless extension candidates. Maximal degree in co-relation 5055. Up to 659 conditions per place. [2022-11-18 19:54:11,149 INFO L137 encePairwiseOnDemand]: 172/194 looper letters, 134 selfloop transitions, 35 changer transitions 0/242 dead transitions. [2022-11-18 19:54:11,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 242 transitions, 1171 flow [2022-11-18 19:54:11,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:54:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:54:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1843 transitions. [2022-11-18 19:54:11,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2022-11-18 19:54:11,157 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1843 transitions. [2022-11-18 19:54:11,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1843 transitions. [2022-11-18 19:54:11,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:11,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1843 transitions. [2022-11-18 19:54:11,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.38888888888889) internal successors, (1843), 18 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:11,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:11,172 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:11,172 INFO L175 Difference]: Start difference. First operand has 180 places, 166 transitions, 515 flow. Second operand 18 states and 1843 transitions. [2022-11-18 19:54:11,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 242 transitions, 1171 flow [2022-11-18 19:54:11,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 242 transitions, 1151 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:54:11,181 INFO L231 Difference]: Finished difference. Result has 201 places, 180 transitions, 693 flow [2022-11-18 19:54:11,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=693, PETRI_PLACES=201, PETRI_TRANSITIONS=180} [2022-11-18 19:54:11,185 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 21 predicate places. [2022-11-18 19:54:11,185 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 180 transitions, 693 flow [2022-11-18 19:54:11,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:11,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:11,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:11,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:54:11,187 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:11,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:11,187 INFO L85 PathProgramCache]: Analyzing trace with hash -945312591, now seen corresponding path program 4 times [2022-11-18 19:54:11,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:11,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643800231] [2022-11-18 19:54:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:11,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:13,180 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 19:54:13,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:13,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643800231] [2022-11-18 19:54:13,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643800231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:13,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:13,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:54:13,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514292291] [2022-11-18 19:54:13,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:13,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:54:13,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:13,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:54:13,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:54:13,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-11-18 19:54:13,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 180 transitions, 693 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:13,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:13,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-11-18 19:54:13,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:14,673 INFO L130 PetriNetUnfolder]: 730/2136 cut-off events. [2022-11-18 19:54:14,673 INFO L131 PetriNetUnfolder]: For 2421/2451 co-relation queries the response was YES. [2022-11-18 19:54:14,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5515 conditions, 2136 events. 730/2136 cut-off events. For 2421/2451 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 15428 event pairs, 138 based on Foata normal form. 9/2095 useless extension candidates. Maximal degree in co-relation 5486. Up to 672 conditions per place. [2022-11-18 19:54:14,696 INFO L137 encePairwiseOnDemand]: 171/194 looper letters, 156 selfloop transitions, 42 changer transitions 0/271 dead transitions. [2022-11-18 19:54:14,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 271 transitions, 1496 flow [2022-11-18 19:54:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:54:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 19:54:14,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1958 transitions. [2022-11-18 19:54:14,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5311991318502441 [2022-11-18 19:54:14,704 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1958 transitions. [2022-11-18 19:54:14,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1958 transitions. [2022-11-18 19:54:14,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:14,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1958 transitions. [2022-11-18 19:54:14,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.05263157894737) internal successors, (1958), 19 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 19:54:14,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:14,731 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:14,739 INFO L175 Difference]: Start difference. First operand has 201 places, 180 transitions, 693 flow. Second operand 19 states and 1958 transitions. [2022-11-18 19:54:14,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 271 transitions, 1496 flow [2022-11-18 19:54:14,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 271 transitions, 1473 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-18 19:54:14,756 INFO L231 Difference]: Finished difference. Result has 223 places, 197 transitions, 943 flow [2022-11-18 19:54:14,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=943, PETRI_PLACES=223, PETRI_TRANSITIONS=197} [2022-11-18 19:54:14,758 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 43 predicate places. [2022-11-18 19:54:14,758 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 197 transitions, 943 flow [2022-11-18 19:54:14,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:14,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:14,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:14,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:54:14,761 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:14,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:14,761 INFO L85 PathProgramCache]: Analyzing trace with hash -921484041, now seen corresponding path program 5 times [2022-11-18 19:54:14,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:14,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17057047] [2022-11-18 19:54:14,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:14,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:15,689 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 19:54:15,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:15,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17057047] [2022-11-18 19:54:15,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17057047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:15,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:15,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:15,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024160414] [2022-11-18 19:54:15,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:15,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:15,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:15,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:15,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:15,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:54:15,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 197 transitions, 943 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:15,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:15,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:54:15,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:16,323 INFO L130 PetriNetUnfolder]: 288/1308 cut-off events. [2022-11-18 19:54:16,323 INFO L131 PetriNetUnfolder]: For 2558/3299 co-relation queries the response was YES. [2022-11-18 19:54:16,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3525 conditions, 1308 events. 288/1308 cut-off events. For 2558/3299 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8972 event pairs, 47 based on Foata normal form. 31/1297 useless extension candidates. Maximal degree in co-relation 3487. Up to 316 conditions per place. [2022-11-18 19:54:16,342 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 87 selfloop transitions, 15 changer transitions 0/260 dead transitions. [2022-11-18 19:54:16,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 260 transitions, 1600 flow [2022-11-18 19:54:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:54:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:54:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1177 transitions. [2022-11-18 19:54:16,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8667157584683358 [2022-11-18 19:54:16,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1177 transitions. [2022-11-18 19:54:16,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1177 transitions. [2022-11-18 19:54:16,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:16,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1177 transitions. [2022-11-18 19:54:16,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:16,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:16,351 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:16,351 INFO L175 Difference]: Start difference. First operand has 223 places, 197 transitions, 943 flow. Second operand 7 states and 1177 transitions. [2022-11-18 19:54:16,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 260 transitions, 1600 flow [2022-11-18 19:54:16,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 260 transitions, 1537 flow, removed 21 selfloop flow, removed 5 redundant places. [2022-11-18 19:54:16,373 INFO L231 Difference]: Finished difference. Result has 227 places, 206 transitions, 1022 flow [2022-11-18 19:54:16,374 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1022, PETRI_PLACES=227, PETRI_TRANSITIONS=206} [2022-11-18 19:54:16,375 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 47 predicate places. [2022-11-18 19:54:16,375 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 206 transitions, 1022 flow [2022-11-18 19:54:16,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:16,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:16,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:16,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:54:16,377 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:16,377 INFO L85 PathProgramCache]: Analyzing trace with hash -501707501, now seen corresponding path program 6 times [2022-11-18 19:54:16,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:16,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899546512] [2022-11-18 19:54:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:16,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:17,872 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 19:54:17,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:17,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899546512] [2022-11-18 19:54:17,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899546512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:17,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:17,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:54:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054154286] [2022-11-18 19:54:17,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:17,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:54:17,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:54:17,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:54:17,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-11-18 19:54:17,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 206 transitions, 1022 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:17,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:17,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-11-18 19:54:17,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:19,703 INFO L130 PetriNetUnfolder]: 1217/3497 cut-off events. [2022-11-18 19:54:19,704 INFO L131 PetriNetUnfolder]: For 7825/7901 co-relation queries the response was YES. [2022-11-18 19:54:19,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10511 conditions, 3497 events. 1217/3497 cut-off events. For 7825/7901 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 29141 event pairs, 221 based on Foata normal form. 42/3455 useless extension candidates. Maximal degree in co-relation 10469. Up to 952 conditions per place. [2022-11-18 19:54:19,746 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 179 selfloop transitions, 50 changer transitions 0/309 dead transitions. [2022-11-18 19:54:19,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 309 transitions, 2226 flow [2022-11-18 19:54:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:54:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 19:54:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1745 transitions. [2022-11-18 19:54:19,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5291085506367496 [2022-11-18 19:54:19,751 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1745 transitions. [2022-11-18 19:54:19,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1745 transitions. [2022-11-18 19:54:19,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:19,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1745 transitions. [2022-11-18 19:54:19,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 102.6470588235294) internal successors, (1745), 17 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 19:54:19,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:19,762 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:19,762 INFO L175 Difference]: Start difference. First operand has 227 places, 206 transitions, 1022 flow. Second operand 17 states and 1745 transitions. [2022-11-18 19:54:19,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 309 transitions, 2226 flow [2022-11-18 19:54:19,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 309 transitions, 2208 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-18 19:54:19,802 INFO L231 Difference]: Finished difference. Result has 249 places, 225 transitions, 1365 flow [2022-11-18 19:54:19,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1365, PETRI_PLACES=249, PETRI_TRANSITIONS=225} [2022-11-18 19:54:19,803 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 69 predicate places. [2022-11-18 19:54:19,803 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 225 transitions, 1365 flow [2022-11-18 19:54:19,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:19,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:19,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:19,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:54:19,805 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:19,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:19,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1094205229, now seen corresponding path program 7 times [2022-11-18 19:54:19,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:19,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720430304] [2022-11-18 19:54:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:19,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,313 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 19:54:21,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:21,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720430304] [2022-11-18 19:54:21,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720430304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:21,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:21,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:54:21,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483403509] [2022-11-18 19:54:21,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:21,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:54:21,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:21,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:54:21,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:54:21,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-11-18 19:54:21,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 225 transitions, 1365 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:21,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:21,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-11-18 19:54:21,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:23,638 INFO L130 PetriNetUnfolder]: 1630/5055 cut-off events. [2022-11-18 19:54:23,638 INFO L131 PetriNetUnfolder]: For 14197/14320 co-relation queries the response was YES. [2022-11-18 19:54:23,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16025 conditions, 5055 events. 1630/5055 cut-off events. For 14197/14320 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 46319 event pairs, 690 based on Foata normal form. 61/5014 useless extension candidates. Maximal degree in co-relation 15976. Up to 1617 conditions per place. [2022-11-18 19:54:23,730 INFO L137 encePairwiseOnDemand]: 172/194 looper letters, 181 selfloop transitions, 70 changer transitions 0/331 dead transitions. [2022-11-18 19:54:23,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 331 transitions, 2705 flow [2022-11-18 19:54:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:54:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:54:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1840 transitions. [2022-11-18 19:54:23,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5269186712485682 [2022-11-18 19:54:23,739 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1840 transitions. [2022-11-18 19:54:23,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1840 transitions. [2022-11-18 19:54:23,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:23,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1840 transitions. [2022-11-18 19:54:23,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:23,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:23,758 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:23,758 INFO L175 Difference]: Start difference. First operand has 249 places, 225 transitions, 1365 flow. Second operand 18 states and 1840 transitions. [2022-11-18 19:54:23,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 331 transitions, 2705 flow [2022-11-18 19:54:23,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 331 transitions, 2650 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-11-18 19:54:23,837 INFO L231 Difference]: Finished difference. Result has 270 places, 255 transitions, 1884 flow [2022-11-18 19:54:23,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1884, PETRI_PLACES=270, PETRI_TRANSITIONS=255} [2022-11-18 19:54:23,838 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 90 predicate places. [2022-11-18 19:54:23,839 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 255 transitions, 1884 flow [2022-11-18 19:54:23,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:23,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:23,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:23,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:54:23,840 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:23,841 INFO L85 PathProgramCache]: Analyzing trace with hash -329243939, now seen corresponding path program 8 times [2022-11-18 19:54:23,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:23,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203731302] [2022-11-18 19:54:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:23,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,688 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 19:54:24,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:24,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203731302] [2022-11-18 19:54:24,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203731302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:24,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:24,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:24,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633926689] [2022-11-18 19:54:24,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:24,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:24,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:24,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:24,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:24,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:54:24,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 255 transitions, 1884 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:24,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:24,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:54:24,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:26,327 INFO L130 PetriNetUnfolder]: 965/4542 cut-off events. [2022-11-18 19:54:26,327 INFO L131 PetriNetUnfolder]: For 20832/24150 co-relation queries the response was YES. [2022-11-18 19:54:26,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15136 conditions, 4542 events. 965/4542 cut-off events. For 20832/24150 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 47220 event pairs, 237 based on Foata normal form. 58/4489 useless extension candidates. Maximal degree in co-relation 15076. Up to 1214 conditions per place. [2022-11-18 19:54:26,396 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 121 selfloop transitions, 24 changer transitions 0/343 dead transitions. [2022-11-18 19:54:26,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 343 transitions, 2920 flow [2022-11-18 19:54:26,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:54:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:54:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1184 transitions. [2022-11-18 19:54:26,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8718703976435935 [2022-11-18 19:54:26,410 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1184 transitions. [2022-11-18 19:54:26,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1184 transitions. [2022-11-18 19:54:26,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:26,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1184 transitions. [2022-11-18 19:54:26,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.14285714285714) internal successors, (1184), 7 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:26,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:26,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:26,426 INFO L175 Difference]: Start difference. First operand has 270 places, 255 transitions, 1884 flow. Second operand 7 states and 1184 transitions. [2022-11-18 19:54:26,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 343 transitions, 2920 flow [2022-11-18 19:54:26,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 343 transitions, 2859 flow, removed 24 selfloop flow, removed 5 redundant places. [2022-11-18 19:54:26,531 INFO L231 Difference]: Finished difference. Result has 275 places, 266 transitions, 2032 flow [2022-11-18 19:54:26,532 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2032, PETRI_PLACES=275, PETRI_TRANSITIONS=266} [2022-11-18 19:54:26,532 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 95 predicate places. [2022-11-18 19:54:26,533 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 266 transitions, 2032 flow [2022-11-18 19:54:26,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:26,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:26,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:26,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:54:26,534 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:26,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:26,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1479866055, now seen corresponding path program 9 times [2022-11-18 19:54:26,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:26,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346546303] [2022-11-18 19:54:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:26,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:28,884 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 19:54:28,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:28,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346546303] [2022-11-18 19:54:28,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346546303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:28,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:28,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 19:54:28,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035125610] [2022-11-18 19:54:28,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:28,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:54:28,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:28,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:54:28,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:54:28,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 194 [2022-11-18 19:54:28,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 266 transitions, 2032 flow. Second operand has 20 states, 20 states have (on average 97.1) internal successors, (1942), 20 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:28,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:28,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 194 [2022-11-18 19:54:28,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:33,856 INFO L130 PetriNetUnfolder]: 2837/9394 cut-off events. [2022-11-18 19:54:33,856 INFO L131 PetriNetUnfolder]: For 39592/40020 co-relation queries the response was YES. [2022-11-18 19:54:33,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32784 conditions, 9394 events. 2837/9394 cut-off events. For 39592/40020 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 101115 event pairs, 1275 based on Foata normal form. 174/9383 useless extension candidates. Maximal degree in co-relation 32720. Up to 2403 conditions per place. [2022-11-18 19:54:34,029 INFO L137 encePairwiseOnDemand]: 165/194 looper letters, 255 selfloop transitions, 108 changer transitions 0/448 dead transitions. [2022-11-18 19:54:34,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 448 transitions, 4508 flow [2022-11-18 19:54:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:54:34,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 19:54:34,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2785 transitions. [2022-11-18 19:54:34,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5127025036818851 [2022-11-18 19:54:34,080 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2785 transitions. [2022-11-18 19:54:34,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2785 transitions. [2022-11-18 19:54:34,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:34,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2785 transitions. [2022-11-18 19:54:34,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 99.46428571428571) internal successors, (2785), 28 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:34,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 194.0) internal successors, (5626), 29 states have internal predecessors, (5626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:34,100 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 194.0) internal successors, (5626), 29 states have internal predecessors, (5626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:34,100 INFO L175 Difference]: Start difference. First operand has 275 places, 266 transitions, 2032 flow. Second operand 28 states and 2785 transitions. [2022-11-18 19:54:34,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 448 transitions, 4508 flow [2022-11-18 19:54:34,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 448 transitions, 4480 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-18 19:54:34,321 INFO L231 Difference]: Finished difference. Result has 309 places, 319 transitions, 3131 flow [2022-11-18 19:54:34,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3131, PETRI_PLACES=309, PETRI_TRANSITIONS=319} [2022-11-18 19:54:34,322 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 129 predicate places. [2022-11-18 19:54:34,322 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 319 transitions, 3131 flow [2022-11-18 19:54:34,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 97.1) internal successors, (1942), 20 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:34,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:34,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:34,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:54:34,324 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:34,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash 765121397, now seen corresponding path program 10 times [2022-11-18 19:54:34,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:34,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360106406] [2022-11-18 19:54:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:34,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:35,259 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 19:54:35,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:35,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360106406] [2022-11-18 19:54:35,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360106406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:35,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:35,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:35,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806033530] [2022-11-18 19:54:35,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:35,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:35,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:35,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:35,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:35,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:54:35,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 319 transitions, 3131 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:35,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:35,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:54:35,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:37,824 INFO L130 PetriNetUnfolder]: 1503/7585 cut-off events. [2022-11-18 19:54:37,824 INFO L131 PetriNetUnfolder]: For 49638/65188 co-relation queries the response was YES. [2022-11-18 19:54:37,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27624 conditions, 7585 events. 1503/7585 cut-off events. For 49638/65188 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 89651 event pairs, 412 based on Foata normal form. 57/7487 useless extension candidates. Maximal degree in co-relation 27551. Up to 1432 conditions per place. [2022-11-18 19:54:37,910 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 138 selfloop transitions, 31 changer transitions 0/415 dead transitions. [2022-11-18 19:54:37,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 415 transitions, 4421 flow [2022-11-18 19:54:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:54:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:54:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1182 transitions. [2022-11-18 19:54:37,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8703976435935199 [2022-11-18 19:54:37,914 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1182 transitions. [2022-11-18 19:54:37,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1182 transitions. [2022-11-18 19:54:37,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:37,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1182 transitions. [2022-11-18 19:54:37,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.85714285714286) internal successors, (1182), 7 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:37,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:37,921 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:37,921 INFO L175 Difference]: Start difference. First operand has 309 places, 319 transitions, 3131 flow. Second operand 7 states and 1182 transitions. [2022-11-18 19:54:37,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 415 transitions, 4421 flow [2022-11-18 19:54:38,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 415 transitions, 4304 flow, removed 44 selfloop flow, removed 12 redundant places. [2022-11-18 19:54:38,172 INFO L231 Difference]: Finished difference. Result has 308 places, 332 transitions, 3327 flow [2022-11-18 19:54:38,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3327, PETRI_PLACES=308, PETRI_TRANSITIONS=332} [2022-11-18 19:54:38,174 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 128 predicate places. [2022-11-18 19:54:38,174 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 332 transitions, 3327 flow [2022-11-18 19:54:38,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:38,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:38,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:38,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:54:38,176 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash -346600699, now seen corresponding path program 11 times [2022-11-18 19:54:38,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:38,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216075072] [2022-11-18 19:54:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:38,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:39,910 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 19:54:39,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:39,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216075072] [2022-11-18 19:54:39,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216075072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:39,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:39,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:54:39,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420354168] [2022-11-18 19:54:39,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:39,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:54:39,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:39,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:54:39,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:54:39,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-11-18 19:54:39,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 332 transitions, 3327 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:39,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:39,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-11-18 19:54:39,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:44,410 INFO L130 PetriNetUnfolder]: 3844/12949 cut-off events. [2022-11-18 19:54:44,410 INFO L131 PetriNetUnfolder]: For 75012/75800 co-relation queries the response was YES. [2022-11-18 19:54:44,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49442 conditions, 12949 events. 3844/12949 cut-off events. For 75012/75800 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 148812 event pairs, 718 based on Foata normal form. 338/13041 useless extension candidates. Maximal degree in co-relation 49363. Up to 2280 conditions per place. [2022-11-18 19:54:44,589 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 273 selfloop transitions, 147 changer transitions 0/513 dead transitions. [2022-11-18 19:54:44,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 513 transitions, 6050 flow [2022-11-18 19:54:44,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:54:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 19:54:44,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1964 transitions. [2022-11-18 19:54:44,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5328269126424309 [2022-11-18 19:54:44,594 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1964 transitions. [2022-11-18 19:54:44,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1964 transitions. [2022-11-18 19:54:44,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:44,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1964 transitions. [2022-11-18 19:54:44,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.36842105263158) internal successors, (1964), 19 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:44,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:44,608 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:44,609 INFO L175 Difference]: Start difference. First operand has 308 places, 332 transitions, 3327 flow. Second operand 19 states and 1964 transitions. [2022-11-18 19:54:44,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 513 transitions, 6050 flow [2022-11-18 19:54:44,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 513 transitions, 6030 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-18 19:54:44,999 INFO L231 Difference]: Finished difference. Result has 332 places, 379 transitions, 4561 flow [2022-11-18 19:54:45,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=3307, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4561, PETRI_PLACES=332, PETRI_TRANSITIONS=379} [2022-11-18 19:54:45,001 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 152 predicate places. [2022-11-18 19:54:45,001 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 379 transitions, 4561 flow [2022-11-18 19:54:45,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:45,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:45,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:45,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:54:45,002 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:45,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:45,003 INFO L85 PathProgramCache]: Analyzing trace with hash -101431993, now seen corresponding path program 12 times [2022-11-18 19:54:45,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:45,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694022109] [2022-11-18 19:54:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:45,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,814 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 19:54:45,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:45,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694022109] [2022-11-18 19:54:45,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694022109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:45,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:45,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:45,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746020723] [2022-11-18 19:54:45,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:45,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:45,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:45,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:45,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:45,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:54:45,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 379 transitions, 4561 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:45,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:45,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:54:45,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:48,331 INFO L130 PetriNetUnfolder]: 1467/8321 cut-off events. [2022-11-18 19:54:48,332 INFO L131 PetriNetUnfolder]: For 79139/94571 co-relation queries the response was YES. [2022-11-18 19:54:48,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33780 conditions, 8321 events. 1467/8321 cut-off events. For 79139/94571 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 101041 event pairs, 672 based on Foata normal form. 70/8192 useless extension candidates. Maximal degree in co-relation 33694. Up to 1905 conditions per place. [2022-11-18 19:54:48,434 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 155 selfloop transitions, 29 changer transitions 0/474 dead transitions. [2022-11-18 19:54:48,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 474 transitions, 5978 flow [2022-11-18 19:54:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:54:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:54:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1185 transitions. [2022-11-18 19:54:48,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8726067746686303 [2022-11-18 19:54:48,437 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1185 transitions. [2022-11-18 19:54:48,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1185 transitions. [2022-11-18 19:54:48,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:48,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1185 transitions. [2022-11-18 19:54:48,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.28571428571428) internal successors, (1185), 7 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:48,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:48,444 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:48,444 INFO L175 Difference]: Start difference. First operand has 332 places, 379 transitions, 4561 flow. Second operand 7 states and 1185 transitions. [2022-11-18 19:54:48,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 474 transitions, 5978 flow [2022-11-18 19:54:48,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 474 transitions, 5844 flow, removed 49 selfloop flow, removed 6 redundant places. [2022-11-18 19:54:48,935 INFO L231 Difference]: Finished difference. Result has 335 places, 386 transitions, 4665 flow [2022-11-18 19:54:48,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=4461, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4665, PETRI_PLACES=335, PETRI_TRANSITIONS=386} [2022-11-18 19:54:48,937 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 155 predicate places. [2022-11-18 19:54:48,937 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 386 transitions, 4665 flow [2022-11-18 19:54:48,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:48,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:48,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:48,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:54:48,938 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:48,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:48,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2037475599, now seen corresponding path program 13 times [2022-11-18 19:54:48,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:48,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465144484] [2022-11-18 19:54:48,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:48,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:49,614 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 19:54:49,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:49,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465144484] [2022-11-18 19:54:49,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465144484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:49,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:49,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:49,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516698890] [2022-11-18 19:54:49,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:49,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:49,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:49,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:54:49,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 386 transitions, 4665 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:49,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:49,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:54:49,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:52,805 INFO L130 PetriNetUnfolder]: 1715/9892 cut-off events. [2022-11-18 19:54:52,805 INFO L131 PetriNetUnfolder]: For 95071/127068 co-relation queries the response was YES. [2022-11-18 19:54:52,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40040 conditions, 9892 events. 1715/9892 cut-off events. For 95071/127068 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 125735 event pairs, 615 based on Foata normal form. 70/9746 useless extension candidates. Maximal degree in co-relation 39950. Up to 3289 conditions per place. [2022-11-18 19:54:52,917 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 160 selfloop transitions, 36 changer transitions 0/486 dead transitions. [2022-11-18 19:54:52,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 486 transitions, 6211 flow [2022-11-18 19:54:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:54:52,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:54:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1183 transitions. [2022-11-18 19:54:52,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8711340206185567 [2022-11-18 19:54:52,920 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1183 transitions. [2022-11-18 19:54:52,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1183 transitions. [2022-11-18 19:54:52,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:52,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1183 transitions. [2022-11-18 19:54:52,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:52,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:52,926 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:52,926 INFO L175 Difference]: Start difference. First operand has 335 places, 386 transitions, 4665 flow. Second operand 7 states and 1183 transitions. [2022-11-18 19:54:52,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 486 transitions, 6211 flow [2022-11-18 19:54:53,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 486 transitions, 6154 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-11-18 19:54:53,240 INFO L231 Difference]: Finished difference. Result has 342 places, 397 transitions, 4913 flow [2022-11-18 19:54:53,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=4616, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4913, PETRI_PLACES=342, PETRI_TRANSITIONS=397} [2022-11-18 19:54:53,241 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 162 predicate places. [2022-11-18 19:54:53,241 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 397 transitions, 4913 flow [2022-11-18 19:54:53,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:53,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:53,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:53,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:54:53,242 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:53,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:53,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1404981703, now seen corresponding path program 14 times [2022-11-18 19:54:53,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:53,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075126659] [2022-11-18 19:54:53,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:53,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:54,024 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 19:54:54,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:54,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075126659] [2022-11-18 19:54:54,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075126659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:54,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:54,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:54,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541903265] [2022-11-18 19:54:54,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:54,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:54,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:54,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:54,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:54,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:54:54,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 397 transitions, 4913 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:54,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:54,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:54:54,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:56,878 INFO L130 PetriNetUnfolder]: 1465/8639 cut-off events. [2022-11-18 19:54:56,878 INFO L131 PetriNetUnfolder]: For 93374/126462 co-relation queries the response was YES. [2022-11-18 19:54:56,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36421 conditions, 8639 events. 1465/8639 cut-off events. For 93374/126462 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 106385 event pairs, 600 based on Foata normal form. 41/8461 useless extension candidates. Maximal degree in co-relation 36327. Up to 3171 conditions per place. [2022-11-18 19:54:56,986 INFO L137 encePairwiseOnDemand]: 187/194 looper letters, 147 selfloop transitions, 33 changer transitions 0/466 dead transitions. [2022-11-18 19:54:56,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 466 transitions, 6060 flow [2022-11-18 19:54:56,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:54:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:54:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1177 transitions. [2022-11-18 19:54:56,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8667157584683358 [2022-11-18 19:54:56,990 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1177 transitions. [2022-11-18 19:54:56,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1177 transitions. [2022-11-18 19:54:56,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:56,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1177 transitions. [2022-11-18 19:54:56,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:56,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:56,997 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:56,997 INFO L175 Difference]: Start difference. First operand has 342 places, 397 transitions, 4913 flow. Second operand 7 states and 1177 transitions. [2022-11-18 19:54:56,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 466 transitions, 6060 flow [2022-11-18 19:54:57,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 466 transitions, 5976 flow, removed 22 selfloop flow, removed 2 redundant places. [2022-11-18 19:54:57,364 INFO L231 Difference]: Finished difference. Result has 349 places, 397 transitions, 4943 flow [2022-11-18 19:54:57,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=4731, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4943, PETRI_PLACES=349, PETRI_TRANSITIONS=397} [2022-11-18 19:54:57,365 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 169 predicate places. [2022-11-18 19:54:57,365 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 397 transitions, 4943 flow [2022-11-18 19:54:57,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:57,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:57,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:57,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:54:57,366 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:54:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash -385625825, now seen corresponding path program 15 times [2022-11-18 19:54:57,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:57,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437493885] [2022-11-18 19:54:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:58,511 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 19:54:58,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:58,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437493885] [2022-11-18 19:54:58,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437493885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:58,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:58,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:58,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095977736] [2022-11-18 19:54:58,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:58,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:58,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:58,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:58,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:54:58,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 397 transitions, 4943 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:58,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:58,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:54:58,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:01,557 INFO L130 PetriNetUnfolder]: 1470/8614 cut-off events. [2022-11-18 19:55:01,557 INFO L131 PetriNetUnfolder]: For 92735/123242 co-relation queries the response was YES. [2022-11-18 19:55:01,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36415 conditions, 8614 events. 1470/8614 cut-off events. For 92735/123242 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 106093 event pairs, 616 based on Foata normal form. 40/8453 useless extension candidates. Maximal degree in co-relation 36318. Up to 1829 conditions per place. [2022-11-18 19:55:01,665 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 209 selfloop transitions, 25 changer transitions 0/520 dead transitions. [2022-11-18 19:55:01,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 520 transitions, 6906 flow [2022-11-18 19:55:01,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:55:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:55:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1188 transitions. [2022-11-18 19:55:01,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8748159057437408 [2022-11-18 19:55:01,668 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1188 transitions. [2022-11-18 19:55:01,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1188 transitions. [2022-11-18 19:55:01,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:01,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1188 transitions. [2022-11-18 19:55:01,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.71428571428572) internal successors, (1188), 7 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:01,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:01,674 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:01,675 INFO L175 Difference]: Start difference. First operand has 349 places, 397 transitions, 4943 flow. Second operand 7 states and 1188 transitions. [2022-11-18 19:55:01,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 520 transitions, 6906 flow [2022-11-18 19:55:02,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 520 transitions, 6800 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-11-18 19:55:02,114 INFO L231 Difference]: Finished difference. Result has 357 places, 408 transitions, 5148 flow [2022-11-18 19:55:02,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=4865, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5148, PETRI_PLACES=357, PETRI_TRANSITIONS=408} [2022-11-18 19:55:02,115 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 177 predicate places. [2022-11-18 19:55:02,115 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 408 transitions, 5148 flow [2022-11-18 19:55:02,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:02,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:02,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:02,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:55:02,117 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:55:02,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash 588730779, now seen corresponding path program 16 times [2022-11-18 19:55:02,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:02,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870138117] [2022-11-18 19:55:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:02,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:02,765 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 19:55:02,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:02,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870138117] [2022-11-18 19:55:02,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870138117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:02,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:02,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:02,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313664306] [2022-11-18 19:55:02,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:02,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:02,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:02,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:02,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:55:02,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 408 transitions, 5148 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:02,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:02,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:55:02,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:06,068 INFO L130 PetriNetUnfolder]: 1449/8669 cut-off events. [2022-11-18 19:55:06,069 INFO L131 PetriNetUnfolder]: For 98899/116435 co-relation queries the response was YES. [2022-11-18 19:55:06,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36939 conditions, 8669 events. 1449/8669 cut-off events. For 98899/116435 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 107027 event pairs, 640 based on Foata normal form. 72/8532 useless extension candidates. Maximal degree in co-relation 36837. Up to 2123 conditions per place. [2022-11-18 19:55:06,196 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 217 selfloop transitions, 32 changer transitions 0/535 dead transitions. [2022-11-18 19:55:06,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 535 transitions, 7094 flow [2022-11-18 19:55:06,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:55:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:55:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1195 transitions. [2022-11-18 19:55:06,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8799705449189985 [2022-11-18 19:55:06,199 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1195 transitions. [2022-11-18 19:55:06,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1195 transitions. [2022-11-18 19:55:06,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:06,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1195 transitions. [2022-11-18 19:55:06,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.71428571428572) internal successors, (1195), 7 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:06,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:06,205 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:06,205 INFO L175 Difference]: Start difference. First operand has 357 places, 408 transitions, 5148 flow. Second operand 7 states and 1195 transitions. [2022-11-18 19:55:06,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 535 transitions, 7094 flow [2022-11-18 19:55:06,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 535 transitions, 7044 flow, removed 21 selfloop flow, removed 1 redundant places. [2022-11-18 19:55:06,634 INFO L231 Difference]: Finished difference. Result has 366 places, 418 transitions, 5418 flow [2022-11-18 19:55:06,635 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=5098, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5418, PETRI_PLACES=366, PETRI_TRANSITIONS=418} [2022-11-18 19:55:06,635 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 186 predicate places. [2022-11-18 19:55:06,636 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 418 transitions, 5418 flow [2022-11-18 19:55:06,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:06,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:06,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:06,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:55:06,637 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:55:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash 133322771, now seen corresponding path program 17 times [2022-11-18 19:55:06,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:06,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616597772] [2022-11-18 19:55:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:06,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:07,648 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 19:55:07,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:07,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616597772] [2022-11-18 19:55:07,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616597772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:07,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:07,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:07,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228316361] [2022-11-18 19:55:07,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:07,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:07,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:07,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:07,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:07,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:55:07,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 418 transitions, 5418 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:07,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:07,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:55:07,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:10,385 INFO L130 PetriNetUnfolder]: 1200/7475 cut-off events. [2022-11-18 19:55:10,385 INFO L131 PetriNetUnfolder]: For 90893/123111 co-relation queries the response was YES. [2022-11-18 19:55:10,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32624 conditions, 7475 events. 1200/7475 cut-off events. For 90893/123111 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 89795 event pairs, 626 based on Foata normal form. 45/7313 useless extension candidates. Maximal degree in co-relation 32518. Up to 2123 conditions per place. [2022-11-18 19:55:10,484 INFO L137 encePairwiseOnDemand]: 187/194 looper letters, 171 selfloop transitions, 33 changer transitions 0/486 dead transitions. [2022-11-18 19:55:10,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 486 transitions, 6571 flow [2022-11-18 19:55:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:55:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:55:10,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1178 transitions. [2022-11-18 19:55:10,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8674521354933726 [2022-11-18 19:55:10,487 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1178 transitions. [2022-11-18 19:55:10,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1178 transitions. [2022-11-18 19:55:10,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:10,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1178 transitions. [2022-11-18 19:55:10,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.28571428571428) internal successors, (1178), 7 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:10,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:10,494 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:10,495 INFO L175 Difference]: Start difference. First operand has 366 places, 418 transitions, 5418 flow. Second operand 7 states and 1178 transitions. [2022-11-18 19:55:10,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 486 transitions, 6571 flow [2022-11-18 19:55:10,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 486 transitions, 6489 flow, removed 30 selfloop flow, removed 2 redundant places. [2022-11-18 19:55:10,865 INFO L231 Difference]: Finished difference. Result has 373 places, 418 transitions, 5463 flow [2022-11-18 19:55:10,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=5232, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5463, PETRI_PLACES=373, PETRI_TRANSITIONS=418} [2022-11-18 19:55:10,866 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 193 predicate places. [2022-11-18 19:55:10,867 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 418 transitions, 5463 flow [2022-11-18 19:55:10,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:10,867 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:10,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:10,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:55:10,867 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:55:10,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:10,868 INFO L85 PathProgramCache]: Analyzing trace with hash -21901383, now seen corresponding path program 18 times [2022-11-18 19:55:10,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:10,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18395823] [2022-11-18 19:55:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:10,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:11,653 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 19:55:11,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:11,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18395823] [2022-11-18 19:55:11,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18395823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:11,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:11,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:11,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315634812] [2022-11-18 19:55:11,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:11,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:11,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:11,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:11,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:11,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:55:11,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 418 transitions, 5463 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:11,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:11,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:55:11,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:14,496 INFO L130 PetriNetUnfolder]: 1184/7437 cut-off events. [2022-11-18 19:55:14,496 INFO L131 PetriNetUnfolder]: For 93462/128096 co-relation queries the response was YES. [2022-11-18 19:55:14,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32518 conditions, 7437 events. 1184/7437 cut-off events. For 93462/128096 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 89304 event pairs, 357 based on Foata normal form. 73/7317 useless extension candidates. Maximal degree in co-relation 32409. Up to 1269 conditions per place. [2022-11-18 19:55:14,591 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 182 selfloop transitions, 38 changer transitions 0/502 dead transitions. [2022-11-18 19:55:14,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 502 transitions, 6948 flow [2022-11-18 19:55:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:55:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:55:14,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1180 transitions. [2022-11-18 19:55:14,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8689248895434463 [2022-11-18 19:55:14,594 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1180 transitions. [2022-11-18 19:55:14,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1180 transitions. [2022-11-18 19:55:14,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:14,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1180 transitions. [2022-11-18 19:55:14,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.57142857142858) internal successors, (1180), 7 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:14,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:14,601 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:14,601 INFO L175 Difference]: Start difference. First operand has 373 places, 418 transitions, 5463 flow. Second operand 7 states and 1180 transitions. [2022-11-18 19:55:14,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 502 transitions, 6948 flow [2022-11-18 19:55:14,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 502 transitions, 6890 flow, removed 18 selfloop flow, removed 2 redundant places. [2022-11-18 19:55:14,976 INFO L231 Difference]: Finished difference. Result has 381 places, 427 transitions, 5734 flow [2022-11-18 19:55:14,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=5405, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5734, PETRI_PLACES=381, PETRI_TRANSITIONS=427} [2022-11-18 19:55:14,977 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 201 predicate places. [2022-11-18 19:55:14,977 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 427 transitions, 5734 flow [2022-11-18 19:55:14,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:14,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:14,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:14,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 19:55:14,978 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:55:14,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:14,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1172904341, now seen corresponding path program 19 times [2022-11-18 19:55:14,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:14,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5965407] [2022-11-18 19:55:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:14,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:16,025 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 19:55:16,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:16,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5965407] [2022-11-18 19:55:16,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5965407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:16,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:16,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:16,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240524045] [2022-11-18 19:55:16,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:16,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:16,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:16,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:16,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:16,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:55:16,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 427 transitions, 5734 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:16,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:16,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:55:16,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:18,581 INFO L130 PetriNetUnfolder]: 959/6509 cut-off events. [2022-11-18 19:55:18,581 INFO L131 PetriNetUnfolder]: For 93272/128835 co-relation queries the response was YES. [2022-11-18 19:55:18,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29556 conditions, 6509 events. 959/6509 cut-off events. For 93272/128835 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 76206 event pairs, 433 based on Foata normal form. 36/6382 useless extension candidates. Maximal degree in co-relation 29443. Up to 2173 conditions per place. [2022-11-18 19:55:18,676 INFO L137 encePairwiseOnDemand]: 187/194 looper letters, 162 selfloop transitions, 47 changer transitions 0/487 dead transitions. [2022-11-18 19:55:18,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 487 transitions, 6854 flow [2022-11-18 19:55:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:55:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:55:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1178 transitions. [2022-11-18 19:55:18,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8674521354933726 [2022-11-18 19:55:18,680 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1178 transitions. [2022-11-18 19:55:18,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1178 transitions. [2022-11-18 19:55:18,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:18,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1178 transitions. [2022-11-18 19:55:18,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.28571428571428) internal successors, (1178), 7 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,684 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,684 INFO L175 Difference]: Start difference. First operand has 381 places, 427 transitions, 5734 flow. Second operand 7 states and 1178 transitions. [2022-11-18 19:55:18,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 487 transitions, 6854 flow [2022-11-18 19:55:19,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 487 transitions, 6747 flow, removed 46 selfloop flow, removed 1 redundant places. [2022-11-18 19:55:19,092 INFO L231 Difference]: Finished difference. Result has 389 places, 427 transitions, 5803 flow [2022-11-18 19:55:19,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=5547, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5803, PETRI_PLACES=389, PETRI_TRANSITIONS=427} [2022-11-18 19:55:19,093 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 209 predicate places. [2022-11-18 19:55:19,093 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 427 transitions, 5803 flow [2022-11-18 19:55:19,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:19,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:19,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:19,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 19:55:19,094 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 19:55:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1496348821, now seen corresponding path program 20 times [2022-11-18 19:55:19,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:19,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131342717] [2022-11-18 19:55:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:19,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:20,092 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 19:55:20,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:20,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131342717] [2022-11-18 19:55:20,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131342717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:20,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:20,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:20,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469864966] [2022-11-18 19:55:20,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:20,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:20,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:20,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:20,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:20,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-18 19:55:20,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 427 transitions, 5803 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:20,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:20,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-18 19:55:20,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand