./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/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_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/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_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/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 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:40:15,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:40:15,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:40:15,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:40:15,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:40:15,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:40:15,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:40:15,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:40:15,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:40:15,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:40:15,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:40:15,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:40:15,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:40:15,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:40:15,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:40:15,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:40:15,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:40:15,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:40:15,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:40:15,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:40:15,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:40:15,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:40:15,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:40:15,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:40:15,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:40:15,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:40:15,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:40:15,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:40:15,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:40:15,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:40:15,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:40:15,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:40:15,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:40:15,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:40:15,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:40:15,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:40:15,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:40:15,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:40:15,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:40:15,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:40:15,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:40:15,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:40:15,647 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:40:15,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:40:15,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:40:15,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:40:15,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:40:15,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:40:15,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:40:15,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:40:15,650 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:40:15,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:40:15,650 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:40:15,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:40:15,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:40:15,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:40:15,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:40:15,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:40:15,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:40:15,651 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:40:15,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:40:15,652 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:40:15,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:40:15,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:40:15,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:40:15,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:40:15,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:40:15,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:40:15,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:40:15,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:40:15,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:40:15,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:40:15,654 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:40:15,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:40:15,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:40:15,654 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_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-11-18 20:40:16,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:40:16,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:40:16,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:40:16,035 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:40:16,036 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:40:16,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-18 20:40:16,119 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/data/097eea709/edc8ac415a854af7b0528c5a103edace/FLAG9c4a93360 [2022-11-18 20:40:16,607 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:40:16,608 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-18 20:40:16,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/data/097eea709/edc8ac415a854af7b0528c5a103edace/FLAG9c4a93360 [2022-11-18 20:40:16,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/data/097eea709/edc8ac415a854af7b0528c5a103edace [2022-11-18 20:40:16,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:40:16,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:40:16,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:40:16,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:40:16,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:40:16,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:40:16" (1/1) ... [2022-11-18 20:40:16,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eab2a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:16, skipping insertion in model container [2022-11-18 20:40:16,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:40:16" (1/1) ... [2022-11-18 20:40:16,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:40:16,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:40:17,231 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_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-18 20:40:17,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:40:17,250 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:40:17,278 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_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-18 20:40:17,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:40:17,298 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:40:17,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17 WrapperNode [2022-11-18 20:40:17,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:40:17,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:40:17,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:40:17,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:40:17,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17" (1/1) ... [2022-11-18 20:40:17,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17" (1/1) ... [2022-11-18 20:40:17,373 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 214 [2022-11-18 20:40:17,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:40:17,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:40:17,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:40:17,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:40:17,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17" (1/1) ... [2022-11-18 20:40:17,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17" (1/1) ... [2022-11-18 20:40:17,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17" (1/1) ... [2022-11-18 20:40:17,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17" (1/1) ... [2022-11-18 20:40:17,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17" (1/1) ... [2022-11-18 20:40:17,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17" (1/1) ... [2022-11-18 20:40:17,418 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17" (1/1) ... [2022-11-18 20:40:17,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17" (1/1) ... [2022-11-18 20:40:17,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:40:17,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:40:17,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:40:17,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:40:17,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17" (1/1) ... [2022-11-18 20:40:17,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:40:17,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:17,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:40:17,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:40:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:40:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:40:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:40:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:40:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:40:17,548 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:40:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:40:17,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:40:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:40:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:40:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:40:17,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:40:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:40:17,552 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:40:17,696 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:40:17,698 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:40:18,238 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:40:18,250 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:40:18,250 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:40:18,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:40:18 BoogieIcfgContainer [2022-11-18 20:40:18,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:40:18,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:40:18,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:40:18,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:40:18,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:40:16" (1/3) ... [2022-11-18 20:40:18,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:40:18, skipping insertion in model container [2022-11-18 20:40:18,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:17" (2/3) ... [2022-11-18 20:40:18,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:40:18, skipping insertion in model container [2022-11-18 20:40:18,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:40:18" (3/3) ... [2022-11-18 20:40:18,264 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2022-11-18 20:40:18,273 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:40:18,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:40:18,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:40:18,285 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:40:18,435 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:40:18,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 273 transitions, 562 flow [2022-11-18 20:40:18,728 INFO L130 PetriNetUnfolder]: 19/271 cut-off events. [2022-11-18 20:40:18,728 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:40:18,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 271 events. 19/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 488 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 176. Up to 2 conditions per place. [2022-11-18 20:40:18,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 273 transitions, 562 flow [2022-11-18 20:40:18,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 262 transitions, 536 flow [2022-11-18 20:40:18,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:40:18,782 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;@67c142c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:40:18,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 20:40:18,865 INFO L130 PetriNetUnfolder]: 19/261 cut-off events. [2022-11-18 20:40:18,865 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:40:18,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:18,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:18,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:18,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1200900486, now seen corresponding path program 1 times [2022-11-18 20:40:18,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:18,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119213361] [2022-11-18 20:40:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:18,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:19,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:19,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119213361] [2022-11-18 20:40:19,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119213361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:19,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:19,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:40:19,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482582184] [2022-11-18 20:40:19,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:19,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:40:19,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:19,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:40:19,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:40:19,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 273 [2022-11-18 20:40:19,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 262 transitions, 536 flow. Second operand has 2 states, 2 states have (on average 257.5) internal successors, (515), 2 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:19,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:19,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 273 [2022-11-18 20:40:19,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:19,366 INFO L130 PetriNetUnfolder]: 5/248 cut-off events. [2022-11-18 20:40:19,367 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-11-18 20:40:19,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 248 events. 5/248 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 446 event pairs, 0 based on Foata normal form. 18/250 useless extension candidates. Maximal degree in co-relation 169. Up to 5 conditions per place. [2022-11-18 20:40:19,374 INFO L137 encePairwiseOnDemand]: 259/273 looper letters, 4 selfloop transitions, 0 changer transitions 3/248 dead transitions. [2022-11-18 20:40:19,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 248 transitions, 516 flow [2022-11-18 20:40:19,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:40:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:40:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 526 transitions. [2022-11-18 20:40:19,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9633699633699634 [2022-11-18 20:40:19,400 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 526 transitions. [2022-11-18 20:40:19,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 526 transitions. [2022-11-18 20:40:19,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:19,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 526 transitions. [2022-11-18 20:40:19,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:19,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:19,448 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:19,450 INFO L175 Difference]: Start difference. First operand has 250 places, 262 transitions, 536 flow. Second operand 2 states and 526 transitions. [2022-11-18 20:40:19,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 248 transitions, 516 flow [2022-11-18 20:40:19,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 248 transitions, 508 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:19,463 INFO L231 Difference]: Finished difference. Result has 247 places, 245 transitions, 494 flow [2022-11-18 20:40:19,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=494, PETRI_PLACES=247, PETRI_TRANSITIONS=245} [2022-11-18 20:40:19,471 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, -3 predicate places. [2022-11-18 20:40:19,471 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 245 transitions, 494 flow [2022-11-18 20:40:19,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 257.5) internal successors, (515), 2 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:19,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:19,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:19,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:40:19,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:19,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash 698699565, now seen corresponding path program 1 times [2022-11-18 20:40:19,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:19,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286687119] [2022-11-18 20:40:19,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:19,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:19,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:19,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286687119] [2022-11-18 20:40:19,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286687119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:19,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:19,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:19,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230411191] [2022-11-18 20:40:19,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:19,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:40:19,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:40:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:40:19,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 273 [2022-11-18 20:40:19,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 245 transitions, 494 flow. Second operand has 5 states, 5 states have (on average 244.4) internal successors, (1222), 5 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:19,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:19,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 273 [2022-11-18 20:40:19,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:20,156 INFO L130 PetriNetUnfolder]: 5/251 cut-off events. [2022-11-18 20:40:20,156 INFO L131 PetriNetUnfolder]: For 2/3 co-relation queries the response was YES. [2022-11-18 20:40:20,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 251 events. 5/251 cut-off events. For 2/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 440 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 273. Up to 14 conditions per place. [2022-11-18 20:40:20,159 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 16 selfloop transitions, 4 changer transitions 0/249 dead transitions. [2022-11-18 20:40:20,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 249 transitions, 542 flow [2022-11-18 20:40:20,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:40:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:40:20,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1231 transitions. [2022-11-18 20:40:20,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9018315018315018 [2022-11-18 20:40:20,164 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1231 transitions. [2022-11-18 20:40:20,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1231 transitions. [2022-11-18 20:40:20,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:20,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1231 transitions. [2022-11-18 20:40:20,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 246.2) internal successors, (1231), 5 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:20,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:20,174 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:20,175 INFO L175 Difference]: Start difference. First operand has 247 places, 245 transitions, 494 flow. Second operand 5 states and 1231 transitions. [2022-11-18 20:40:20,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 249 transitions, 542 flow [2022-11-18 20:40:20,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 249 transitions, 542 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:40:20,181 INFO L231 Difference]: Finished difference. Result has 249 places, 246 transitions, 510 flow [2022-11-18 20:40:20,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=249, PETRI_TRANSITIONS=246} [2022-11-18 20:40:20,183 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, -1 predicate places. [2022-11-18 20:40:20,183 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 246 transitions, 510 flow [2022-11-18 20:40:20,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 244.4) internal successors, (1222), 5 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:20,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:20,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:20,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:40:20,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:20,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:20,186 INFO L85 PathProgramCache]: Analyzing trace with hash -742487074, now seen corresponding path program 1 times [2022-11-18 20:40:20,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:20,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380158430] [2022-11-18 20:40:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:20,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:20,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:20,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380158430] [2022-11-18 20:40:20,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380158430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:20,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480497468] [2022-11-18 20:40:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:20,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:20,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:20,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:20,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:40:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:20,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:40:20,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:21,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:21,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480497468] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:21,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:21,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-18 20:40:21,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509801337] [2022-11-18 20:40:21,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:21,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:40:21,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:21,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:40:21,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:40:21,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 273 [2022-11-18 20:40:21,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 246 transitions, 510 flow. Second operand has 14 states, 14 states have (on average 243.64285714285714) internal successors, (3411), 14 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:21,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:21,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 273 [2022-11-18 20:40:21,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:21,468 INFO L130 PetriNetUnfolder]: 5/260 cut-off events. [2022-11-18 20:40:21,468 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-18 20:40:21,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 260 events. 5/260 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 431 event pairs, 0 based on Foata normal form. 2/250 useless extension candidates. Maximal degree in co-relation 298. Up to 11 conditions per place. [2022-11-18 20:40:21,471 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 17 selfloop transitions, 11 changer transitions 0/256 dead transitions. [2022-11-18 20:40:21,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 256 transitions, 588 flow [2022-11-18 20:40:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:40:21,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:40:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2681 transitions. [2022-11-18 20:40:21,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8927738927738927 [2022-11-18 20:40:21,478 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2681 transitions. [2022-11-18 20:40:21,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2681 transitions. [2022-11-18 20:40:21,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:21,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2681 transitions. [2022-11-18 20:40:21,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 243.72727272727272) internal successors, (2681), 11 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:21,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 273.0) internal successors, (3276), 12 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:21,497 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 273.0) internal successors, (3276), 12 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:21,497 INFO L175 Difference]: Start difference. First operand has 249 places, 246 transitions, 510 flow. Second operand 11 states and 2681 transitions. [2022-11-18 20:40:21,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 256 transitions, 588 flow [2022-11-18 20:40:21,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 256 transitions, 582 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:40:21,504 INFO L231 Difference]: Finished difference. Result has 259 places, 252 transitions, 559 flow [2022-11-18 20:40:21,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=559, PETRI_PLACES=259, PETRI_TRANSITIONS=252} [2022-11-18 20:40:21,508 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 9 predicate places. [2022-11-18 20:40:21,508 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 252 transitions, 559 flow [2022-11-18 20:40:21,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 243.64285714285714) internal successors, (3411), 14 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:21,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:21,511 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:21,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:21,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3b6fa3-ccb4-4614-8a00-2717ad00bf74/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:21,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:21,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:21,719 INFO L85 PathProgramCache]: Analyzing trace with hash -55670530, now seen corresponding path program 2 times [2022-11-18 20:40:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:21,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057564821] [2022-11-18 20:40:21,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:21,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:22,515 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:40:22,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:22,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057564821] [2022-11-18 20:40:22,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057564821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:22,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:22,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:40:22,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851727356] [2022-11-18 20:40:22,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:22,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:40:22,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:22,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:40:22,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:40:22,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-18 20:40:22,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 252 transitions, 559 flow. Second operand has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:22,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:22,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-18 20:40:22,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:23,705 INFO L130 PetriNetUnfolder]: 392/2333 cut-off events. [2022-11-18 20:40:23,709 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-18 20:40:23,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3184 conditions, 2333 events. 392/2333 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 18989 event pairs, 120 based on Foata normal form. 1/2118 useless extension candidates. Maximal degree in co-relation 3176. Up to 304 conditions per place. [2022-11-18 20:40:23,727 INFO L137 encePairwiseOnDemand]: 252/273 looper letters, 127 selfloop transitions, 22 changer transitions 15/363 dead transitions. [2022-11-18 20:40:23,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 363 transitions, 1119 flow [2022-11-18 20:40:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:40:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:40:23,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2791 transitions. [2022-11-18 20:40:23,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7864187094956325 [2022-11-18 20:40:23,737 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2791 transitions. [2022-11-18 20:40:23,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2791 transitions. [2022-11-18 20:40:23,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:23,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2791 transitions. [2022-11-18 20:40:23,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 214.69230769230768) internal successors, (2791), 13 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:23,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:23,763 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:23,763 INFO L175 Difference]: Start difference. First operand has 259 places, 252 transitions, 559 flow. Second operand 13 states and 2791 transitions. [2022-11-18 20:40:23,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 363 transitions, 1119 flow [2022-11-18 20:40:23,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 363 transitions, 1110 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-18 20:40:23,774 INFO L231 Difference]: Finished difference. Result has 278 places, 266 transitions, 693 flow [2022-11-18 20:40:23,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=693, PETRI_PLACES=278, PETRI_TRANSITIONS=266} [2022-11-18 20:40:23,776 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 28 predicate places. [2022-11-18 20:40:23,776 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 266 transitions, 693 flow [2022-11-18 20:40:23,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:23,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:23,778 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:23,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:40:23,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash 216873814, now seen corresponding path program 3 times [2022-11-18 20:40:23,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:23,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035019654] [2022-11-18 20:40:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:23,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:40:24,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:24,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035019654] [2022-11-18 20:40:24,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035019654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:24,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:24,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:40:24,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537262038] [2022-11-18 20:40:24,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:24,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:40:24,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:24,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:40:24,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:40:24,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-18 20:40:24,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 266 transitions, 693 flow. Second operand has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:24,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:24,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-18 20:40:24,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:26,288 INFO L130 PetriNetUnfolder]: 732/4513 cut-off events. [2022-11-18 20:40:26,288 INFO L131 PetriNetUnfolder]: For 1370/1404 co-relation queries the response was YES. [2022-11-18 20:40:26,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7476 conditions, 4513 events. 732/4513 cut-off events. For 1370/1404 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 43414 event pairs, 250 based on Foata normal form. 15/4083 useless extension candidates. Maximal degree in co-relation 7458. Up to 525 conditions per place. [2022-11-18 20:40:26,328 INFO L137 encePairwiseOnDemand]: 254/273 looper letters, 160 selfloop transitions, 26 changer transitions 16/403 dead transitions. [2022-11-18 20:40:26,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 403 transitions, 1672 flow [2022-11-18 20:40:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:40:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:40:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2793 transitions. [2022-11-18 20:40:26,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7869822485207101 [2022-11-18 20:40:26,337 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2793 transitions. [2022-11-18 20:40:26,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2793 transitions. [2022-11-18 20:40:26,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:26,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2793 transitions. [2022-11-18 20:40:26,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 214.84615384615384) internal successors, (2793), 13 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:26,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:26,357 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:26,357 INFO L175 Difference]: Start difference. First operand has 278 places, 266 transitions, 693 flow. Second operand 13 states and 2793 transitions. [2022-11-18 20:40:26,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 403 transitions, 1672 flow [2022-11-18 20:40:26,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 403 transitions, 1620 flow, removed 16 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:26,379 INFO L231 Difference]: Finished difference. Result has 292 places, 280 transitions, 866 flow [2022-11-18 20:40:26,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=866, PETRI_PLACES=292, PETRI_TRANSITIONS=280} [2022-11-18 20:40:26,383 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 42 predicate places. [2022-11-18 20:40:26,383 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 280 transitions, 866 flow [2022-11-18 20:40:26,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:26,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:26,385 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:26,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:40:26,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:26,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:26,386 INFO L85 PathProgramCache]: Analyzing trace with hash 914233240, now seen corresponding path program 4 times [2022-11-18 20:40:26,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:26,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983159815] [2022-11-18 20:40:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:26,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:40:27,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:27,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983159815] [2022-11-18 20:40:27,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983159815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:27,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:27,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:40:27,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540818392] [2022-11-18 20:40:27,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:27,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:40:27,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:27,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:40:27,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:40:27,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-18 20:40:27,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 280 transitions, 866 flow. Second operand has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:27,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:27,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-18 20:40:27,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:29,062 INFO L130 PetriNetUnfolder]: 819/4866 cut-off events. [2022-11-18 20:40:29,062 INFO L131 PetriNetUnfolder]: For 4289/4334 co-relation queries the response was YES. [2022-11-18 20:40:29,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9341 conditions, 4866 events. 819/4866 cut-off events. For 4289/4334 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 47946 event pairs, 284 based on Foata normal form. 18/4460 useless extension candidates. Maximal degree in co-relation 9315. Up to 695 conditions per place. [2022-11-18 20:40:29,119 INFO L137 encePairwiseOnDemand]: 252/273 looper letters, 141 selfloop transitions, 40 changer transitions 15/397 dead transitions. [2022-11-18 20:40:29,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 397 transitions, 1958 flow [2022-11-18 20:40:29,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:40:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:40:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2578 transitions. [2022-11-18 20:40:29,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7869352869352869 [2022-11-18 20:40:29,129 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2578 transitions. [2022-11-18 20:40:29,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2578 transitions. [2022-11-18 20:40:29,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:29,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2578 transitions. [2022-11-18 20:40:29,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 214.83333333333334) internal successors, (2578), 12 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:29,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 273.0) internal successors, (3549), 13 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:29,151 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 273.0) internal successors, (3549), 13 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:29,152 INFO L175 Difference]: Start difference. First operand has 292 places, 280 transitions, 866 flow. Second operand 12 states and 2578 transitions. [2022-11-18 20:40:29,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 397 transitions, 1958 flow [2022-11-18 20:40:29,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 397 transitions, 1893 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:29,180 INFO L231 Difference]: Finished difference. Result has 303 places, 303 transitions, 1209 flow [2022-11-18 20:40:29,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1209, PETRI_PLACES=303, PETRI_TRANSITIONS=303} [2022-11-18 20:40:29,182 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 53 predicate places. [2022-11-18 20:40:29,182 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 303 transitions, 1209 flow [2022-11-18 20:40:29,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:29,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:29,184 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:29,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:40:29,185 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:29,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:29,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2009755404, now seen corresponding path program 5 times [2022-11-18 20:40:29,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:29,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873627527] [2022-11-18 20:40:29,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:29,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:40:29,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:29,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873627527] [2022-11-18 20:40:29,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873627527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:29,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:29,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:40:29,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146390968] [2022-11-18 20:40:29,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:29,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:40:29,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:29,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:40:29,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:40:29,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-18 20:40:29,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 303 transitions, 1209 flow. Second operand has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:29,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:29,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-18 20:40:29,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:31,836 INFO L130 PetriNetUnfolder]: 889/5686 cut-off events. [2022-11-18 20:40:31,836 INFO L131 PetriNetUnfolder]: For 8134/8212 co-relation queries the response was YES. [2022-11-18 20:40:31,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11866 conditions, 5686 events. 889/5686 cut-off events. For 8134/8212 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 57976 event pairs, 328 based on Foata normal form. 24/5164 useless extension candidates. Maximal degree in co-relation 11834. Up to 760 conditions per place. [2022-11-18 20:40:31,897 INFO L137 encePairwiseOnDemand]: 254/273 looper letters, 158 selfloop transitions, 54 changer transitions 14/429 dead transitions. [2022-11-18 20:40:31,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 429 transitions, 2563 flow [2022-11-18 20:40:31,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:40:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:40:31,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2580 transitions. [2022-11-18 20:40:31,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7875457875457875 [2022-11-18 20:40:31,905 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2580 transitions. [2022-11-18 20:40:31,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2580 transitions. [2022-11-18 20:40:31,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:31,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2580 transitions. [2022-11-18 20:40:31,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 215.0) internal successors, (2580), 12 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:31,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 273.0) internal successors, (3549), 13 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:31,922 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 273.0) internal successors, (3549), 13 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:31,922 INFO L175 Difference]: Start difference. First operand has 303 places, 303 transitions, 1209 flow. Second operand 12 states and 2580 transitions. [2022-11-18 20:40:31,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 429 transitions, 2563 flow [2022-11-18 20:40:31,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 429 transitions, 2392 flow, removed 44 selfloop flow, removed 5 redundant places. [2022-11-18 20:40:31,958 INFO L231 Difference]: Finished difference. Result has 313 places, 326 transitions, 1567 flow [2022-11-18 20:40:31,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1567, PETRI_PLACES=313, PETRI_TRANSITIONS=326} [2022-11-18 20:40:31,959 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 63 predicate places. [2022-11-18 20:40:31,959 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 326 transitions, 1567 flow [2022-11-18 20:40:31,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:31,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:31,961 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:31,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:40:31,961 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:31,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash 512631910, now seen corresponding path program 6 times [2022-11-18 20:40:31,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:31,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794082321] [2022-11-18 20:40:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:31,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:40:32,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:32,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794082321] [2022-11-18 20:40:32,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794082321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:32,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:32,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:40:32,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279696348] [2022-11-18 20:40:32,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:32,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:40:32,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:32,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:40:32,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:40:32,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-18 20:40:32,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 326 transitions, 1567 flow. Second operand has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:32,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:32,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-18 20:40:32,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:35,231 INFO L130 PetriNetUnfolder]: 1189/7404 cut-off events. [2022-11-18 20:40:35,231 INFO L131 PetriNetUnfolder]: For 17787/17988 co-relation queries the response was YES. [2022-11-18 20:40:35,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16987 conditions, 7404 events. 1189/7404 cut-off events. For 17787/17988 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 81550 event pairs, 469 based on Foata normal form. 50/6787 useless extension candidates. Maximal degree in co-relation 16949. Up to 1301 conditions per place. [2022-11-18 20:40:35,438 INFO L137 encePairwiseOnDemand]: 253/273 looper letters, 193 selfloop transitions, 58 changer transitions 27/481 dead transitions. [2022-11-18 20:40:35,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 481 transitions, 3559 flow [2022-11-18 20:40:35,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:40:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:40:35,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2778 transitions. [2022-11-18 20:40:35,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7827557058326289 [2022-11-18 20:40:35,452 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2778 transitions. [2022-11-18 20:40:35,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2778 transitions. [2022-11-18 20:40:35,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:35,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2778 transitions. [2022-11-18 20:40:35,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 213.69230769230768) internal successors, (2778), 13 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:35,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:35,470 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:35,470 INFO L175 Difference]: Start difference. First operand has 313 places, 326 transitions, 1567 flow. Second operand 13 states and 2778 transitions. [2022-11-18 20:40:35,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 481 transitions, 3559 flow [2022-11-18 20:40:35,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 481 transitions, 3331 flow, removed 68 selfloop flow, removed 8 redundant places. [2022-11-18 20:40:35,537 INFO L231 Difference]: Finished difference. Result has 324 places, 381 transitions, 2373 flow [2022-11-18 20:40:35,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2373, PETRI_PLACES=324, PETRI_TRANSITIONS=381} [2022-11-18 20:40:35,538 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 74 predicate places. [2022-11-18 20:40:35,539 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 381 transitions, 2373 flow [2022-11-18 20:40:35,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:35,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:35,540 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:35,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:40:35,541 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:35,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:35,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1020417836, now seen corresponding path program 7 times [2022-11-18 20:40:35,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:35,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90714237] [2022-11-18 20:40:35,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:35,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:40:36,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:36,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90714237] [2022-11-18 20:40:36,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90714237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:36,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:36,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:40:36,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492716133] [2022-11-18 20:40:36,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:36,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:40:36,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:36,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:40:36,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:40:36,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-18 20:40:36,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 381 transitions, 2373 flow. Second operand has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:36,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:36,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-18 20:40:36,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:39,308 INFO L130 PetriNetUnfolder]: 1567/9348 cut-off events. [2022-11-18 20:40:39,308 INFO L131 PetriNetUnfolder]: For 30828/31080 co-relation queries the response was YES. [2022-11-18 20:40:39,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22990 conditions, 9348 events. 1567/9348 cut-off events. For 30828/31080 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 108352 event pairs, 516 based on Foata normal form. 62/8514 useless extension candidates. Maximal degree in co-relation 22946. Up to 1607 conditions per place. [2022-11-18 20:40:39,454 INFO L137 encePairwiseOnDemand]: 251/273 looper letters, 262 selfloop transitions, 69 changer transitions 28/565 dead transitions. [2022-11-18 20:40:39,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 565 transitions, 5195 flow [2022-11-18 20:40:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:40:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:40:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2775 transitions. [2022-11-18 20:40:39,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7819103972950127 [2022-11-18 20:40:39,463 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2775 transitions. [2022-11-18 20:40:39,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2775 transitions. [2022-11-18 20:40:39,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:39,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2775 transitions. [2022-11-18 20:40:39,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 213.46153846153845) internal successors, (2775), 13 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:39,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:39,483 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:39,484 INFO L175 Difference]: Start difference. First operand has 324 places, 381 transitions, 2373 flow. Second operand 13 states and 2775 transitions. [2022-11-18 20:40:39,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 565 transitions, 5195 flow [2022-11-18 20:40:39,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 565 transitions, 5027 flow, removed 84 selfloop flow, removed 2 redundant places. [2022-11-18 20:40:39,623 INFO L231 Difference]: Finished difference. Result has 341 places, 444 transitions, 3542 flow [2022-11-18 20:40:39,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3542, PETRI_PLACES=341, PETRI_TRANSITIONS=444} [2022-11-18 20:40:39,624 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 91 predicate places. [2022-11-18 20:40:39,625 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 444 transitions, 3542 flow [2022-11-18 20:40:39,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:39,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:39,626 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:39,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:40:39,627 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:39,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:39,627 INFO L85 PathProgramCache]: Analyzing trace with hash 270558650, now seen corresponding path program 8 times [2022-11-18 20:40:39,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:39,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844601650] [2022-11-18 20:40:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:39,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:40:40,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:40,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844601650] [2022-11-18 20:40:40,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844601650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:40,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:40,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:40:40,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513142849] [2022-11-18 20:40:40,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:40,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:40:40,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:40,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:40:40,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:40:40,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-18 20:40:40,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 444 transitions, 3542 flow. Second operand has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:40,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:40,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-18 20:40:40,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:44,142 INFO L130 PetriNetUnfolder]: 1777/11104 cut-off events. [2022-11-18 20:40:44,142 INFO L131 PetriNetUnfolder]: For 47632/47968 co-relation queries the response was YES. [2022-11-18 20:40:44,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28307 conditions, 11104 events. 1777/11104 cut-off events. For 47632/47968 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 133094 event pairs, 497 based on Foata normal form. 98/10212 useless extension candidates. Maximal degree in co-relation 28253. Up to 1860 conditions per place. [2022-11-18 20:40:44,313 INFO L137 encePairwiseOnDemand]: 250/273 looper letters, 221 selfloop transitions, 193 changer transitions 29/649 dead transitions. [2022-11-18 20:40:44,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 649 transitions, 6958 flow [2022-11-18 20:40:44,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:40:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:40:44,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2988 transitions. [2022-11-18 20:40:44,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7817896389324961 [2022-11-18 20:40:44,326 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2988 transitions. [2022-11-18 20:40:44,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2988 transitions. [2022-11-18 20:40:44,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:44,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2988 transitions. [2022-11-18 20:40:44,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 213.42857142857142) internal successors, (2988), 14 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:44,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:44,353 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:44,354 INFO L175 Difference]: Start difference. First operand has 341 places, 444 transitions, 3542 flow. Second operand 14 states and 2988 transitions. [2022-11-18 20:40:44,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 649 transitions, 6958 flow [2022-11-18 20:40:44,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 649 transitions, 6750 flow, removed 104 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:44,632 INFO L231 Difference]: Finished difference. Result has 357 places, 527 transitions, 5474 flow [2022-11-18 20:40:44,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3400, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5474, PETRI_PLACES=357, PETRI_TRANSITIONS=527} [2022-11-18 20:40:44,635 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 107 predicate places. [2022-11-18 20:40:44,635 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 527 transitions, 5474 flow [2022-11-18 20:40:44,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:44,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:44,637 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:44,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:40:44,637 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:44,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:44,638 INFO L85 PathProgramCache]: Analyzing trace with hash 881226272, now seen corresponding path program 9 times [2022-11-18 20:40:44,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:44,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948190661] [2022-11-18 20:40:44,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:44,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:40:45,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:45,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948190661] [2022-11-18 20:40:45,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948190661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:45,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:45,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:40:45,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284224794] [2022-11-18 20:40:45,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:45,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:40:45,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:45,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:40:45,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:40:45,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-18 20:40:45,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 527 transitions, 5474 flow. Second operand has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:45,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:45,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-18 20:40:45,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:49,374 INFO L130 PetriNetUnfolder]: 1807/11338 cut-off events. [2022-11-18 20:40:49,375 INFO L131 PetriNetUnfolder]: For 57441/57991 co-relation queries the response was YES. [2022-11-18 20:40:49,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30044 conditions, 11338 events. 1807/11338 cut-off events. For 57441/57991 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 136994 event pairs, 498 based on Foata normal form. 155/10409 useless extension candidates. Maximal degree in co-relation 29983. Up to 1163 conditions per place. [2022-11-18 20:40:49,527 INFO L137 encePairwiseOnDemand]: 254/273 looper letters, 249 selfloop transitions, 194 changer transitions 25/678 dead transitions. [2022-11-18 20:40:49,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 678 transitions, 8202 flow [2022-11-18 20:40:49,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:40:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:40:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2791 transitions. [2022-11-18 20:40:49,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7864187094956325 [2022-11-18 20:40:49,538 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2791 transitions. [2022-11-18 20:40:49,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2791 transitions. [2022-11-18 20:40:49,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:49,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2791 transitions. [2022-11-18 20:40:49,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 214.69230769230768) internal successors, (2791), 13 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:49,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:49,564 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:49,564 INFO L175 Difference]: Start difference. First operand has 357 places, 527 transitions, 5474 flow. Second operand 13 states and 2791 transitions. [2022-11-18 20:40:49,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 678 transitions, 8202 flow [2022-11-18 20:40:49,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 678 transitions, 7636 flow, removed 283 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:50,007 INFO L231 Difference]: Finished difference. Result has 369 places, 551 transitions, 6156 flow [2022-11-18 20:40:50,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5142, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6156, PETRI_PLACES=369, PETRI_TRANSITIONS=551} [2022-11-18 20:40:50,008 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 119 predicate places. [2022-11-18 20:40:50,009 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 551 transitions, 6156 flow [2022-11-18 20:40:50,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:50,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:50,010 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:50,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:40:50,011 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:50,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash 383513354, now seen corresponding path program 10 times [2022-11-18 20:40:50,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:50,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780030945] [2022-11-18 20:40:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:50,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:40:50,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:50,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780030945] [2022-11-18 20:40:50,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780030945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:50,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:50,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:40:50,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501940432] [2022-11-18 20:40:50,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:50,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:40:50,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:50,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:40:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:40:50,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-18 20:40:50,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 551 transitions, 6156 flow. Second operand has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:50,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:50,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-18 20:40:50,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:54,757 INFO L130 PetriNetUnfolder]: 1802/11069 cut-off events. [2022-11-18 20:40:54,758 INFO L131 PetriNetUnfolder]: For 62629/63296 co-relation queries the response was YES. [2022-11-18 20:40:54,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30412 conditions, 11069 events. 1802/11069 cut-off events. For 62629/63296 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 132872 event pairs, 539 based on Foata normal form. 203/10271 useless extension candidates. Maximal degree in co-relation 30346. Up to 961 conditions per place. [2022-11-18 20:40:54,911 INFO L137 encePairwiseOnDemand]: 251/273 looper letters, 252 selfloop transitions, 208 changer transitions 21/688 dead transitions. [2022-11-18 20:40:54,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 688 transitions, 8836 flow [2022-11-18 20:40:54,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:40:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:40:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2790 transitions. [2022-11-18 20:40:54,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7861369399830939 [2022-11-18 20:40:54,918 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2790 transitions. [2022-11-18 20:40:54,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2790 transitions. [2022-11-18 20:40:54,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:54,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2790 transitions. [2022-11-18 20:40:54,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 214.6153846153846) internal successors, (2790), 13 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:54,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:54,933 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:54,933 INFO L175 Difference]: Start difference. First operand has 369 places, 551 transitions, 6156 flow. Second operand 13 states and 2790 transitions. [2022-11-18 20:40:54,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 688 transitions, 8836 flow [2022-11-18 20:40:55,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 688 transitions, 8334 flow, removed 183 selfloop flow, removed 7 redundant places. [2022-11-18 20:40:55,249 INFO L231 Difference]: Finished difference. Result has 380 places, 578 transitions, 7101 flow [2022-11-18 20:40:55,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5753, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7101, PETRI_PLACES=380, PETRI_TRANSITIONS=578} [2022-11-18 20:40:55,251 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 130 predicate places. [2022-11-18 20:40:55,251 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 578 transitions, 7101 flow [2022-11-18 20:40:55,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:55,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:55,252 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:55,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:40:55,253 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:40:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2017068526, now seen corresponding path program 11 times [2022-11-18 20:40:55,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:55,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593350468] [2022-11-18 20:40:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:40:55,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:55,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593350468] [2022-11-18 20:40:55,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593350468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:55,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:55,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:40:55,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495310877] [2022-11-18 20:40:55,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:55,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:40:55,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:40:55,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:40:55,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-18 20:40:55,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 578 transitions, 7101 flow. Second operand has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:55,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:55,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-18 20:40:55,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:41:00,318 INFO L130 PetriNetUnfolder]: 2002/13043 cut-off events. [2022-11-18 20:41:00,318 INFO L131 PetriNetUnfolder]: For 72617/73230 co-relation queries the response was YES. [2022-11-18 20:41:00,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35086 conditions, 13043 events. 2002/13043 cut-off events. For 72617/73230 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 162655 event pairs, 564 based on Foata normal form. 190/12057 useless extension candidates. Maximal degree in co-relation 35014. Up to 1978 conditions per place. [2022-11-18 20:41:00,504 INFO L137 encePairwiseOnDemand]: 250/273 looper letters, 281 selfloop transitions, 277 changer transitions 36/805 dead transitions. [2022-11-18 20:41:00,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 805 transitions, 11667 flow [2022-11-18 20:41:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:41:00,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:41:00,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2988 transitions. [2022-11-18 20:41:00,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7817896389324961 [2022-11-18 20:41:00,511 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2988 transitions. [2022-11-18 20:41:00,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2988 transitions. [2022-11-18 20:41:00,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:00,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2988 transitions. [2022-11-18 20:41:00,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 213.42857142857142) internal successors, (2988), 14 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:00,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:00,527 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:00,527 INFO L175 Difference]: Start difference. First operand has 380 places, 578 transitions, 7101 flow. Second operand 14 states and 2988 transitions. [2022-11-18 20:41:00,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 805 transitions, 11667 flow [2022-11-18 20:41:00,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 805 transitions, 10913 flow, removed 256 selfloop flow, removed 7 redundant places. [2022-11-18 20:41:00,883 INFO L231 Difference]: Finished difference. Result has 392 places, 674 transitions, 9241 flow [2022-11-18 20:41:00,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=6648, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9241, PETRI_PLACES=392, PETRI_TRANSITIONS=674} [2022-11-18 20:41:00,885 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 142 predicate places. [2022-11-18 20:41:00,885 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 674 transitions, 9241 flow [2022-11-18 20:41:00,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:00,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:41:00,887 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:00,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:41:00,887 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:41:00,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:00,888 INFO L85 PathProgramCache]: Analyzing trace with hash -466258023, now seen corresponding path program 1 times [2022-11-18 20:41:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:00,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945548211] [2022-11-18 20:41:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:00,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:41:01,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:01,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945548211] [2022-11-18 20:41:01,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945548211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:01,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:01,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:41:01,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326325220] [2022-11-18 20:41:01,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:01,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:41:01,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:01,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:41:01,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:41:01,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 273 [2022-11-18 20:41:01,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 674 transitions, 9241 flow. Second operand has 8 states, 8 states have (on average 202.875) internal successors, (1623), 8 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:01,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:41:01,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 273 [2022-11-18 20:41:01,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:41:09,167 INFO L130 PetriNetUnfolder]: 4294/24389 cut-off events. [2022-11-18 20:41:09,167 INFO L131 PetriNetUnfolder]: For 124929/125531 co-relation queries the response was YES. [2022-11-18 20:41:09,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61383 conditions, 24389 events. 4294/24389 cut-off events. For 124929/125531 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 329010 event pairs, 965 based on Foata normal form. 185/22600 useless extension candidates. Maximal degree in co-relation 61306. Up to 2224 conditions per place. [2022-11-18 20:41:09,551 INFO L137 encePairwiseOnDemand]: 259/273 looper letters, 465 selfloop transitions, 87 changer transitions 14/1002 dead transitions. [2022-11-18 20:41:09,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1002 transitions, 14288 flow [2022-11-18 20:41:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:41:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:41:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2791 transitions. [2022-11-18 20:41:09,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7864187094956325 [2022-11-18 20:41:09,556 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2791 transitions. [2022-11-18 20:41:09,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2791 transitions. [2022-11-18 20:41:09,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:09,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2791 transitions. [2022-11-18 20:41:09,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 214.69230769230768) internal successors, (2791), 13 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:09,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:09,571 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:09,571 INFO L175 Difference]: Start difference. First operand has 392 places, 674 transitions, 9241 flow. Second operand 13 states and 2791 transitions. [2022-11-18 20:41:09,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1002 transitions, 14288 flow [2022-11-18 20:41:10,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 1002 transitions, 13796 flow, removed 246 selfloop flow, removed 6 redundant places. [2022-11-18 20:41:10,512 INFO L231 Difference]: Finished difference. Result has 401 places, 750 transitions, 10108 flow [2022-11-18 20:41:10,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=8815, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10108, PETRI_PLACES=401, PETRI_TRANSITIONS=750} [2022-11-18 20:41:10,514 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 151 predicate places. [2022-11-18 20:41:10,515 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 750 transitions, 10108 flow [2022-11-18 20:41:10,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 202.875) internal successors, (1623), 8 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:10,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:41:10,516 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:10,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:41:10,516 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:41:10,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:10,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1977091161, now seen corresponding path program 2 times [2022-11-18 20:41:10,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:10,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271926276] [2022-11-18 20:41:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:10,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:41:11,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:11,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271926276] [2022-11-18 20:41:11,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271926276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:11,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:11,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:41:11,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618729565] [2022-11-18 20:41:11,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:11,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:41:11,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:11,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:41:11,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:41:11,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 273 [2022-11-18 20:41:11,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 750 transitions, 10108 flow. Second operand has 8 states, 8 states have (on average 202.875) internal successors, (1623), 8 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:11,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:41:11,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 273 [2022-11-18 20:41:11,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:41:21,431 INFO L130 PetriNetUnfolder]: 6057/32069 cut-off events. [2022-11-18 20:41:21,431 INFO L131 PetriNetUnfolder]: For 186871/187909 co-relation queries the response was YES. [2022-11-18 20:41:21,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88848 conditions, 32069 events. 6057/32069 cut-off events. For 186871/187909 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 452841 event pairs, 1713 based on Foata normal form. 186/30481 useless extension candidates. Maximal degree in co-relation 88769. Up to 6216 conditions per place. [2022-11-18 20:41:21,948 INFO L137 encePairwiseOnDemand]: 255/273 looper letters, 488 selfloop transitions, 119 changer transitions 15/1058 dead transitions. [2022-11-18 20:41:21,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 1058 transitions, 15124 flow [2022-11-18 20:41:21,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:41:21,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:41:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1977 transitions. [2022-11-18 20:41:21,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8046398046398047 [2022-11-18 20:41:21,953 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1977 transitions. [2022-11-18 20:41:21,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1977 transitions. [2022-11-18 20:41:21,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:21,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1977 transitions. [2022-11-18 20:41:21,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 219.66666666666666) internal successors, (1977), 9 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:21,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:21,962 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:21,962 INFO L175 Difference]: Start difference. First operand has 401 places, 750 transitions, 10108 flow. Second operand 9 states and 1977 transitions. [2022-11-18 20:41:21,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 1058 transitions, 15124 flow [2022-11-18 20:41:23,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1058 transitions, 14891 flow, removed 19 selfloop flow, removed 1 redundant places. [2022-11-18 20:41:23,583 INFO L231 Difference]: Finished difference. Result has 414 places, 813 transitions, 11320 flow [2022-11-18 20:41:23,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=9952, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11320, PETRI_PLACES=414, PETRI_TRANSITIONS=813} [2022-11-18 20:41:23,585 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 164 predicate places. [2022-11-18 20:41:23,585 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 813 transitions, 11320 flow [2022-11-18 20:41:23,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 202.875) internal successors, (1623), 8 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:23,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:41:23,586 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:23,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:41:23,587 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:41:23,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1399742783, now seen corresponding path program 3 times [2022-11-18 20:41:23,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:23,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702668697] [2022-11-18 20:41:23,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:23,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:41:23,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:23,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702668697] [2022-11-18 20:41:23,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702668697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:23,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:23,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:41:23,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891398158] [2022-11-18 20:41:23,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:23,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:41:23,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:23,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:41:23,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:41:23,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 273 [2022-11-18 20:41:23,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 813 transitions, 11320 flow. Second operand has 8 states, 8 states have (on average 202.875) internal successors, (1623), 8 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:23,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:41:23,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 273 [2022-11-18 20:41:23,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand