./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-match-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_33f9161f-9db7-4de6-8e53-b7c4b5651557/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/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_33f9161f-9db7-4de6-8e53-b7c4b5651557/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/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_33f9161f-9db7-4de6-8e53-b7c4b5651557/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 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:56:36,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:56:36,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:56:36,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:56:36,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:56:36,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:56:36,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:56:36,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:56:36,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:56:36,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:56:36,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:56:36,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:56:36,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:56:36,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:56:36,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:56:36,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:56:36,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:56:36,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:56:36,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:56:36,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:56:36,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:56:36,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:56:36,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:56:36,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:56:36,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:56:36,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:56:36,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:56:36,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:56:36,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:56:36,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:56:36,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:56:36,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:56:36,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:56:36,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:56:36,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:56:36,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:56:36,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:56:36,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:56:36,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:56:36,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:56:36,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:56:36,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:56:36,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:56:36,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:56:36,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:56:36,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:56:36,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:56:36,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:56:36,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:56:36,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:56:36,481 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:56:36,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:56:36,482 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:56:36,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:56:36,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:56:36,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:56:36,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:56:36,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:56:36,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:56:36,484 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:56:36,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:56:36,485 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:56:36,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:56:36,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:56:36,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:56:36,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:56:36,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:56:36,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:56:36,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:56:36,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:56:36,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:56:36,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:56:36,488 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:56:36,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:56:36,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:56:36,489 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_33f9161f-9db7-4de6-8e53-b7c4b5651557/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac [2022-11-18 19:56:36,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:56:36,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:56:36,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:56:36,828 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:56:36,829 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:56:36,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-11-18 19:56:36,943 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/bin/uautomizer-TMbwUNV5ro/data/d8ced5814/0bfe8ef11e9541cf88ac7920d84d63b6/FLAG6b5b5479a [2022-11-18 19:56:37,635 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:56:37,640 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-11-18 19:56:37,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/bin/uautomizer-TMbwUNV5ro/data/d8ced5814/0bfe8ef11e9541cf88ac7920d84d63b6/FLAG6b5b5479a [2022-11-18 19:56:37,969 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/bin/uautomizer-TMbwUNV5ro/data/d8ced5814/0bfe8ef11e9541cf88ac7920d84d63b6 [2022-11-18 19:56:37,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:56:37,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:56:37,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:56:37,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:56:37,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:56:37,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:56:37" (1/1) ... [2022-11-18 19:56:37,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772ef2be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:37, skipping insertion in model container [2022-11-18 19:56:37,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:56:37" (1/1) ... [2022-11-18 19:56:37,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:56:38,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:56:38,277 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_33f9161f-9db7-4de6-8e53-b7c4b5651557/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-11-18 19:56:38,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:56:38,292 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:56:38,315 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_33f9161f-9db7-4de6-8e53-b7c4b5651557/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-11-18 19:56:38,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:56:38,332 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:56:38,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38 WrapperNode [2022-11-18 19:56:38,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:56:38,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:56:38,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:56:38,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:56:38,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38" (1/1) ... [2022-11-18 19:56:38,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38" (1/1) ... [2022-11-18 19:56:38,374 INFO L138 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 148 [2022-11-18 19:56:38,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:56:38,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:56:38,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:56:38,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:56:38,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38" (1/1) ... [2022-11-18 19:56:38,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38" (1/1) ... [2022-11-18 19:56:38,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38" (1/1) ... [2022-11-18 19:56:38,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38" (1/1) ... [2022-11-18 19:56:38,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38" (1/1) ... [2022-11-18 19:56:38,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38" (1/1) ... [2022-11-18 19:56:38,398 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38" (1/1) ... [2022-11-18 19:56:38,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38" (1/1) ... [2022-11-18 19:56:38,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:56:38,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:56:38,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:56:38,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:56:38,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38" (1/1) ... [2022-11-18 19:56:38,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:56:38,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:38,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:56:38,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f9161f-9db7-4de6-8e53-b7c4b5651557/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:56:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:56:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:56:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:56:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:56:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:56:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:56:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:56:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:56:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:56:38,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:56:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:56:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:56:38,514 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:56:38,656 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:56:38,658 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:56:39,105 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:56:39,117 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:56:39,118 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:56:39,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:56:39 BoogieIcfgContainer [2022-11-18 19:56:39,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:56:39,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:56:39,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:56:39,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:56:39,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:56:37" (1/3) ... [2022-11-18 19:56:39,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b40c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:56:39, skipping insertion in model container [2022-11-18 19:56:39,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:38" (2/3) ... [2022-11-18 19:56:39,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b40c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:56:39, skipping insertion in model container [2022-11-18 19:56:39,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:56:39" (3/3) ... [2022-11-18 19:56:39,132 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2022-11-18 19:56:39,143 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:56:39,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:56:39,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:56:39,156 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:56:39,308 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:56:39,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 212 transitions, 440 flow [2022-11-18 19:56:39,633 INFO L130 PetriNetUnfolder]: 11/210 cut-off events. [2022-11-18 19:56:39,634 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:56:39,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 210 events. 11/210 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2022-11-18 19:56:39,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 212 transitions, 440 flow [2022-11-18 19:56:39,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 201 transitions, 414 flow [2022-11-18 19:56:39,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:56:39,682 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;@6b95b014, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:56:39,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 19:56:39,769 INFO L130 PetriNetUnfolder]: 11/200 cut-off events. [2022-11-18 19:56:39,770 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:56:39,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:39,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:39,772 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 19:56:39,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:39,778 INFO L85 PathProgramCache]: Analyzing trace with hash -286532004, now seen corresponding path program 1 times [2022-11-18 19:56:39,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:39,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574472512] [2022-11-18 19:56:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:39,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:46,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:46,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574472512] [2022-11-18 19:56:46,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574472512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:46,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:46,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-18 19:56:46,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703621447] [2022-11-18 19:56:46,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:46,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:56:46,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:46,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:56:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1180, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:56:46,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-18 19:56:46,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 201 transitions, 414 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:46,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:46,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-18 19:56:46,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:09,579 INFO L130 PetriNetUnfolder]: 674/2400 cut-off events. [2022-11-18 19:57:09,579 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-18 19:57:09,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3960 conditions, 2400 events. 674/2400 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 15783 event pairs, 25 based on Foata normal form. 222/2485 useless extension candidates. Maximal degree in co-relation 3653. Up to 159 conditions per place. [2022-11-18 19:57:09,597 INFO L137 encePairwiseOnDemand]: 155/212 looper letters, 504 selfloop transitions, 17 changer transitions 44/672 dead transitions. [2022-11-18 19:57:09,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 672 transitions, 2543 flow [2022-11-18 19:57:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 19:57:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-18 19:57:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 6151 transitions. [2022-11-18 19:57:09,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6173223604977921 [2022-11-18 19:57:09,628 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 6151 transitions. [2022-11-18 19:57:09,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 6151 transitions. [2022-11-18 19:57:09,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:09,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 6151 transitions. [2022-11-18 19:57:09,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 130.87234042553192) internal successors, (6151), 47 states have internal predecessors, (6151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:09,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 212.0) internal successors, (10176), 48 states have internal predecessors, (10176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:09,691 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 212.0) internal successors, (10176), 48 states have internal predecessors, (10176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:09,694 INFO L175 Difference]: Start difference. First operand has 197 places, 201 transitions, 414 flow. Second operand 47 states and 6151 transitions. [2022-11-18 19:57:09,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 672 transitions, 2543 flow [2022-11-18 19:57:09,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 672 transitions, 2497 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:57:09,722 INFO L231 Difference]: Finished difference. Result has 265 places, 187 transitions, 465 flow [2022-11-18 19:57:09,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=465, PETRI_PLACES=265, PETRI_TRANSITIONS=187} [2022-11-18 19:57:09,732 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 68 predicate places. [2022-11-18 19:57:09,733 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 187 transitions, 465 flow [2022-11-18 19:57:09,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:09,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:09,737 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:09,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:57:09,738 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 19:57:09,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:09,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1620472852, now seen corresponding path program 2 times [2022-11-18 19:57:09,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:09,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121189835] [2022-11-18 19:57:09,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:09,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:14,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:14,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121189835] [2022-11-18 19:57:14,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121189835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:14,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:14,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-18 19:57:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424556578] [2022-11-18 19:57:14,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:14,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:57:14,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:14,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:57:14,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:57:14,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-18 19:57:14,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 187 transitions, 465 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:14,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:14,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-18 19:57:14,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:32,846 INFO L130 PetriNetUnfolder]: 697/2517 cut-off events. [2022-11-18 19:57:32,853 INFO L131 PetriNetUnfolder]: For 675/675 co-relation queries the response was YES. [2022-11-18 19:57:32,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5053 conditions, 2517 events. 697/2517 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 17054 event pairs, 2 based on Foata normal form. 1/2382 useless extension candidates. Maximal degree in co-relation 5019. Up to 159 conditions per place. [2022-11-18 19:57:32,875 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 502 selfloop transitions, 17 changer transitions 57/682 dead transitions. [2022-11-18 19:57:32,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 682 transitions, 3284 flow [2022-11-18 19:57:32,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 19:57:32,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 19:57:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 5724 transitions. [2022-11-18 19:57:32,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2022-11-18 19:57:32,892 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 5724 transitions. [2022-11-18 19:57:32,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 5724 transitions. [2022-11-18 19:57:32,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:32,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 5724 transitions. [2022-11-18 19:57:32,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 130.0909090909091) internal successors, (5724), 44 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:32,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 212.0) internal successors, (9540), 45 states have internal predecessors, (9540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:32,937 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 212.0) internal successors, (9540), 45 states have internal predecessors, (9540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:32,937 INFO L175 Difference]: Start difference. First operand has 265 places, 187 transitions, 465 flow. Second operand 44 states and 5724 transitions. [2022-11-18 19:57:32,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 682 transitions, 3284 flow [2022-11-18 19:57:32,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 682 transitions, 2593 flow, removed 33 selfloop flow, removed 42 redundant places. [2022-11-18 19:57:32,969 INFO L231 Difference]: Finished difference. Result has 261 places, 186 transitions, 467 flow [2022-11-18 19:57:32,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=467, PETRI_PLACES=261, PETRI_TRANSITIONS=186} [2022-11-18 19:57:32,970 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 64 predicate places. [2022-11-18 19:57:32,971 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 186 transitions, 467 flow [2022-11-18 19:57:32,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:32,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:32,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:32,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:57:32,976 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 19:57:32,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:32,978 INFO L85 PathProgramCache]: Analyzing trace with hash 936517804, now seen corresponding path program 3 times [2022-11-18 19:57:32,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:32,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698997969] [2022-11-18 19:57:32,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:32,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:36,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:36,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698997969] [2022-11-18 19:57:36,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698997969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:36,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:36,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-18 19:57:36,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718112805] [2022-11-18 19:57:36,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:36,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:57:36,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:36,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:57:36,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:57:36,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-18 19:57:36,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 186 transitions, 467 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:36,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:36,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-18 19:57:36,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:51,260 INFO L130 PetriNetUnfolder]: 1096/3748 cut-off events. [2022-11-18 19:57:51,260 INFO L131 PetriNetUnfolder]: For 1117/1117 co-relation queries the response was YES. [2022-11-18 19:57:51,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7851 conditions, 3748 events. 1096/3748 cut-off events. For 1117/1117 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 27801 event pairs, 312 based on Foata normal form. 1/3572 useless extension candidates. Maximal degree in co-relation 7806. Up to 702 conditions per place. [2022-11-18 19:57:51,294 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 395 selfloop transitions, 45 changer transitions 34/580 dead transitions. [2022-11-18 19:57:51,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 580 transitions, 2760 flow [2022-11-18 19:57:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 19:57:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-18 19:57:51,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 6325 transitions. [2022-11-18 19:57:51,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5966981132075472 [2022-11-18 19:57:51,309 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 6325 transitions. [2022-11-18 19:57:51,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 6325 transitions. [2022-11-18 19:57:51,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:51,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 6325 transitions. [2022-11-18 19:57:51,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 126.5) internal successors, (6325), 50 states have internal predecessors, (6325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 212.0) internal successors, (10812), 51 states have internal predecessors, (10812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,352 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 212.0) internal successors, (10812), 51 states have internal predecessors, (10812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,353 INFO L175 Difference]: Start difference. First operand has 261 places, 186 transitions, 467 flow. Second operand 50 states and 6325 transitions. [2022-11-18 19:57:51,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 580 transitions, 2760 flow [2022-11-18 19:57:51,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 580 transitions, 2160 flow, removed 92 selfloop flow, removed 42 redundant places. [2022-11-18 19:57:51,377 INFO L231 Difference]: Finished difference. Result has 283 places, 230 transitions, 729 flow [2022-11-18 19:57:51,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=729, PETRI_PLACES=283, PETRI_TRANSITIONS=230} [2022-11-18 19:57:51,378 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 86 predicate places. [2022-11-18 19:57:51,378 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 230 transitions, 729 flow [2022-11-18 19:57:51,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:51,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:51,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:57:51,382 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 19:57:51,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:51,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1792506332, now seen corresponding path program 4 times [2022-11-18 19:57:51,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:51,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459321824] [2022-11-18 19:57:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:51,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:54,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:54,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459321824] [2022-11-18 19:57:54,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459321824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:54,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:54,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-18 19:57:54,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451564119] [2022-11-18 19:57:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:54,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:57:54,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:54,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:57:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:57:54,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-18 19:57:54,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 230 transitions, 729 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:54,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:54,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-18 19:57:54,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:09,026 INFO L130 PetriNetUnfolder]: 1501/5269 cut-off events. [2022-11-18 19:58:09,026 INFO L131 PetriNetUnfolder]: For 2231/2235 co-relation queries the response was YES. [2022-11-18 19:58:09,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11494 conditions, 5269 events. 1501/5269 cut-off events. For 2231/2235 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 42644 event pairs, 208 based on Foata normal form. 1/5032 useless extension candidates. Maximal degree in co-relation 11418. Up to 1164 conditions per place. [2022-11-18 19:58:09,078 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 628 selfloop transitions, 113 changer transitions 23/870 dead transitions. [2022-11-18 19:58:09,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 870 transitions, 4669 flow [2022-11-18 19:58:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-18 19:58:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-11-18 19:58:09,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 9843 transitions. [2022-11-18 19:58:09,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5952467343976778 [2022-11-18 19:58:09,095 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 9843 transitions. [2022-11-18 19:58:09,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 9843 transitions. [2022-11-18 19:58:09,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:09,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 9843 transitions. [2022-11-18 19:58:09,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 126.1923076923077) internal successors, (9843), 78 states have internal predecessors, (9843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:09,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 212.0) internal successors, (16748), 79 states have internal predecessors, (16748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:09,157 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 212.0) internal successors, (16748), 79 states have internal predecessors, (16748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:09,161 INFO L175 Difference]: Start difference. First operand has 283 places, 230 transitions, 729 flow. Second operand 78 states and 9843 transitions. [2022-11-18 19:58:09,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 870 transitions, 4669 flow [2022-11-18 19:58:09,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 870 transitions, 4135 flow, removed 266 selfloop flow, removed 23 redundant places. [2022-11-18 19:58:09,206 INFO L231 Difference]: Finished difference. Result has 379 places, 319 transitions, 1548 flow [2022-11-18 19:58:09,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=1548, PETRI_PLACES=379, PETRI_TRANSITIONS=319} [2022-11-18 19:58:09,208 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 182 predicate places. [2022-11-18 19:58:09,208 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 319 transitions, 1548 flow [2022-11-18 19:58:09,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:09,210 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:09,211 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:09,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:58:09,211 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 19:58:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:09,212 INFO L85 PathProgramCache]: Analyzing trace with hash 752434644, now seen corresponding path program 5 times [2022-11-18 19:58:09,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:09,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31219897] [2022-11-18 19:58:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:09,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:12,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:12,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31219897] [2022-11-18 19:58:12,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31219897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:12,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:12,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-18 19:58:12,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433722865] [2022-11-18 19:58:12,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:12,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:58:12,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:12,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:58:12,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:58:12,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-18 19:58:12,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 319 transitions, 1548 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:12,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:12,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-18 19:58:12,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:29,235 INFO L130 PetriNetUnfolder]: 1552/5687 cut-off events. [2022-11-18 19:58:29,235 INFO L131 PetriNetUnfolder]: For 8521/8532 co-relation queries the response was YES. [2022-11-18 19:58:29,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14942 conditions, 5687 events. 1552/5687 cut-off events. For 8521/8532 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 47875 event pairs, 134 based on Foata normal form. 6/5427 useless extension candidates. Maximal degree in co-relation 14822. Up to 494 conditions per place. [2022-11-18 19:58:29,311 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 674 selfloop transitions, 99 changer transitions 54/933 dead transitions. [2022-11-18 19:58:29,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 933 transitions, 6534 flow [2022-11-18 19:58:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 19:58:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 19:58:29,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 5850 transitions. [2022-11-18 19:58:29,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6132075471698113 [2022-11-18 19:58:29,323 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 5850 transitions. [2022-11-18 19:58:29,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 5850 transitions. [2022-11-18 19:58:29,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:29,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 5850 transitions. [2022-11-18 19:58:29,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 130.0) internal successors, (5850), 45 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:29,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 212.0) internal successors, (9752), 46 states have internal predecessors, (9752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:29,355 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 212.0) internal successors, (9752), 46 states have internal predecessors, (9752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:29,355 INFO L175 Difference]: Start difference. First operand has 379 places, 319 transitions, 1548 flow. Second operand 45 states and 5850 transitions. [2022-11-18 19:58:29,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 933 transitions, 6534 flow [2022-11-18 19:58:29,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 933 transitions, 5800 flow, removed 125 selfloop flow, removed 21 redundant places. [2022-11-18 19:58:29,457 INFO L231 Difference]: Finished difference. Result has 419 places, 326 transitions, 1703 flow [2022-11-18 19:58:29,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1703, PETRI_PLACES=419, PETRI_TRANSITIONS=326} [2022-11-18 19:58:29,459 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 222 predicate places. [2022-11-18 19:58:29,459 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 326 transitions, 1703 flow [2022-11-18 19:58:29,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:29,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:29,461 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:29,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:58:29,462 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 19:58:29,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:29,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1531199970, now seen corresponding path program 6 times [2022-11-18 19:58:29,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:29,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983802684] [2022-11-18 19:58:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:29,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:33,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:33,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983802684] [2022-11-18 19:58:33,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983802684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:33,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:33,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-18 19:58:33,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598375925] [2022-11-18 19:58:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:33,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:58:33,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:58:33,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:58:33,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-18 19:58:33,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 326 transitions, 1703 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:33,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:33,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-18 19:58:33,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:51,180 INFO L130 PetriNetUnfolder]: 2024/7171 cut-off events. [2022-11-18 19:58:51,180 INFO L131 PetriNetUnfolder]: For 17013/17022 co-relation queries the response was YES. [2022-11-18 19:58:51,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21137 conditions, 7171 events. 2024/7171 cut-off events. For 17013/17022 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 62426 event pairs, 1273 based on Foata normal form. 1/6790 useless extension candidates. Maximal degree in co-relation 20995. Up to 1921 conditions per place. [2022-11-18 19:58:51,259 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 548 selfloop transitions, 78 changer transitions 37/769 dead transitions. [2022-11-18 19:58:51,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 769 transitions, 5997 flow [2022-11-18 19:58:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 19:58:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-18 19:58:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6716 transitions. [2022-11-18 19:58:51,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5977216091135635 [2022-11-18 19:58:51,270 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6716 transitions. [2022-11-18 19:58:51,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6716 transitions. [2022-11-18 19:58:51,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:51,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6716 transitions. [2022-11-18 19:58:51,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 126.71698113207547) internal successors, (6716), 53 states have internal predecessors, (6716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 212.0) internal successors, (11448), 54 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,304 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 212.0) internal successors, (11448), 54 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,305 INFO L175 Difference]: Start difference. First operand has 419 places, 326 transitions, 1703 flow. Second operand 53 states and 6716 transitions. [2022-11-18 19:58:51,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 769 transitions, 5997 flow [2022-11-18 19:58:51,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 769 transitions, 5238 flow, removed 85 selfloop flow, removed 40 redundant places. [2022-11-18 19:58:51,435 INFO L231 Difference]: Finished difference. Result has 450 places, 373 transitions, 2107 flow [2022-11-18 19:58:51,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=2107, PETRI_PLACES=450, PETRI_TRANSITIONS=373} [2022-11-18 19:58:51,437 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 253 predicate places. [2022-11-18 19:58:51,437 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 373 transitions, 2107 flow [2022-11-18 19:58:51,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:51,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:51,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:58:51,440 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 19:58:51,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:51,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1607488846, now seen corresponding path program 7 times [2022-11-18 19:58:51,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:51,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449240852] [2022-11-18 19:58:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:51,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:54,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:54,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449240852] [2022-11-18 19:58:54,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449240852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:54,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:54,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-18 19:58:54,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806794602] [2022-11-18 19:58:54,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:54,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:58:54,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:54,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:58:54,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1180, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:58:54,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-18 19:58:54,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 373 transitions, 2107 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:54,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:54,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-18 19:58:54,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:12,514 INFO L130 PetriNetUnfolder]: 2674/9602 cut-off events. [2022-11-18 19:59:12,514 INFO L131 PetriNetUnfolder]: For 26157/26164 co-relation queries the response was YES. [2022-11-18 19:59:12,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29049 conditions, 9602 events. 2674/9602 cut-off events. For 26157/26164 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 90955 event pairs, 325 based on Foata normal form. 6/9165 useless extension candidates. Maximal degree in co-relation 28868. Up to 1969 conditions per place. [2022-11-18 19:59:12,658 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 1002 selfloop transitions, 223 changer transitions 25/1356 dead transitions. [2022-11-18 19:59:12,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 1356 transitions, 11347 flow [2022-11-18 19:59:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-11-18 19:59:12,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2022-11-18 19:59:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 10280 transitions. [2022-11-18 19:59:12,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5986489634288377 [2022-11-18 19:59:12,673 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 10280 transitions. [2022-11-18 19:59:12,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 10280 transitions. [2022-11-18 19:59:12,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:12,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 10280 transitions. [2022-11-18 19:59:12,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 126.91358024691358) internal successors, (10280), 81 states have internal predecessors, (10280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:12,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 212.0) internal successors, (17384), 82 states have internal predecessors, (17384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:12,716 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 212.0) internal successors, (17384), 82 states have internal predecessors, (17384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:12,717 INFO L175 Difference]: Start difference. First operand has 450 places, 373 transitions, 2107 flow. Second operand 81 states and 10280 transitions. [2022-11-18 19:59:12,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 1356 transitions, 11347 flow [2022-11-18 19:59:12,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 1356 transitions, 10337 flow, removed 505 selfloop flow, removed 23 redundant places. [2022-11-18 19:59:12,959 INFO L231 Difference]: Finished difference. Result has 541 places, 513 transitions, 3986 flow [2022-11-18 19:59:12,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=3986, PETRI_PLACES=541, PETRI_TRANSITIONS=513} [2022-11-18 19:59:12,961 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 344 predicate places. [2022-11-18 19:59:12,962 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 513 transitions, 3986 flow [2022-11-18 19:59:12,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:12,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:12,964 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:12,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:59:12,964 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 19:59:12,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:12,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1215881632, now seen corresponding path program 8 times [2022-11-18 19:59:12,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:12,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808835364] [2022-11-18 19:59:12,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:12,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:17,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:17,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808835364] [2022-11-18 19:59:17,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808835364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:17,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:17,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-18 19:59:17,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073940524] [2022-11-18 19:59:17,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:17,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:59:17,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:17,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:59:17,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:59:17,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-18 19:59:17,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 513 transitions, 3986 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:17,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:17,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-18 19:59:17,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:38,200 INFO L130 PetriNetUnfolder]: 2686/9499 cut-off events. [2022-11-18 19:59:38,200 INFO L131 PetriNetUnfolder]: For 46101/46146 co-relation queries the response was YES. [2022-11-18 19:59:38,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32858 conditions, 9499 events. 2686/9499 cut-off events. For 46101/46146 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 89171 event pairs, 1578 based on Foata normal form. 10/9028 useless extension candidates. Maximal degree in co-relation 32641. Up to 3241 conditions per place. [2022-11-18 19:59:38,381 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 677 selfloop transitions, 118 changer transitions 34/935 dead transitions. [2022-11-18 19:59:38,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 935 transitions, 8820 flow [2022-11-18 19:59:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-18 19:59:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-11-18 19:59:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 6849 transitions. [2022-11-18 19:59:38,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5982704402515723 [2022-11-18 19:59:38,396 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 6849 transitions. [2022-11-18 19:59:38,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 6849 transitions. [2022-11-18 19:59:38,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:38,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 6849 transitions. [2022-11-18 19:59:38,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 126.83333333333333) internal successors, (6849), 54 states have internal predecessors, (6849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:38,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 212.0) internal successors, (11660), 55 states have internal predecessors, (11660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:38,432 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 212.0) internal successors, (11660), 55 states have internal predecessors, (11660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:38,433 INFO L175 Difference]: Start difference. First operand has 541 places, 513 transitions, 3986 flow. Second operand 54 states and 6849 transitions. [2022-11-18 19:59:38,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 935 transitions, 8820 flow [2022-11-18 19:59:38,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 935 transitions, 7740 flow, removed 306 selfloop flow, removed 21 redundant places. [2022-11-18 19:59:38,873 INFO L231 Difference]: Finished difference. Result has 587 places, 520 transitions, 3619 flow [2022-11-18 19:59:38,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=3259, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=3619, PETRI_PLACES=587, PETRI_TRANSITIONS=520} [2022-11-18 19:59:38,879 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 390 predicate places. [2022-11-18 19:59:38,879 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 520 transitions, 3619 flow [2022-11-18 19:59:38,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:38,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:38,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:38,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:59:38,882 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 19:59:38,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:38,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1732681116, now seen corresponding path program 9 times [2022-11-18 19:59:38,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:38,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798836357] [2022-11-18 19:59:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:38,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:41,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:41,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798836357] [2022-11-18 19:59:41,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798836357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:41,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:41,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-18 19:59:41,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214024169] [2022-11-18 19:59:41,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:41,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:59:41,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:41,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:59:41,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:59:41,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-18 19:59:41,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 520 transitions, 3619 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:41,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:41,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-18 19:59:41,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:00:01,454 INFO L130 PetriNetUnfolder]: 3587/12994 cut-off events. [2022-11-18 20:00:01,455 INFO L131 PetriNetUnfolder]: For 73843/73886 co-relation queries the response was YES. [2022-11-18 20:00:01,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45534 conditions, 12994 events. 3587/12994 cut-off events. For 73843/73886 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 132305 event pairs, 1731 based on Foata normal form. 10/12327 useless extension candidates. Maximal degree in co-relation 45273. Up to 4023 conditions per place. [2022-11-18 20:00:01,648 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 901 selfloop transitions, 170 changer transitions 21/1198 dead transitions. [2022-11-18 20:00:01,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 1198 transitions, 11511 flow [2022-11-18 20:00:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-18 20:00:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2022-11-18 20:00:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 9141 transitions. [2022-11-18 20:00:01,677 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5988600628930818 [2022-11-18 20:00:01,677 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 9141 transitions. [2022-11-18 20:00:01,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 9141 transitions. [2022-11-18 20:00:01,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:00:01,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 9141 transitions. [2022-11-18 20:00:01,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 126.95833333333333) internal successors, (9141), 72 states have internal predecessors, (9141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:01,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 212.0) internal successors, (15476), 73 states have internal predecessors, (15476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:01,722 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 212.0) internal successors, (15476), 73 states have internal predecessors, (15476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:01,723 INFO L175 Difference]: Start difference. First operand has 587 places, 520 transitions, 3619 flow. Second operand 72 states and 9141 transitions. [2022-11-18 20:00:01,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 1198 transitions, 11511 flow [2022-11-18 20:00:02,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 1198 transitions, 10809 flow, removed 246 selfloop flow, removed 47 redundant places. [2022-11-18 20:00:02,201 INFO L231 Difference]: Finished difference. Result has 649 places, 619 transitions, 5454 flow [2022-11-18 20:00:02,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=3353, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=5454, PETRI_PLACES=649, PETRI_TRANSITIONS=619} [2022-11-18 20:00:02,203 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 452 predicate places. [2022-11-18 20:00:02,203 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 619 transitions, 5454 flow [2022-11-18 20:00:02,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:02,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:00:02,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:02,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:00:02,205 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 20:00:02,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:02,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1795638912, now seen corresponding path program 10 times [2022-11-18 20:00:02,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:02,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783573408] [2022-11-18 20:00:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:02,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:04,709 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 20:00:04,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:04,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783573408] [2022-11-18 20:00:04,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783573408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:04,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:04,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-18 20:00:04,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781354888] [2022-11-18 20:00:04,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:04,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:00:04,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:04,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:00:04,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:00:04,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-18 20:00:04,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 619 transitions, 5454 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:04,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:00:04,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-18 20:00:04,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:00:27,545 INFO L130 PetriNetUnfolder]: 4259/15744 cut-off events. [2022-11-18 20:00:27,545 INFO L131 PetriNetUnfolder]: For 133779/133811 co-relation queries the response was YES. [2022-11-18 20:00:27,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60722 conditions, 15744 events. 4259/15744 cut-off events. For 133779/133811 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 168402 event pairs, 1328 based on Foata normal form. 6/14932 useless extension candidates. Maximal degree in co-relation 60402. Up to 4724 conditions per place. [2022-11-18 20:00:27,989 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 1166 selfloop transitions, 296 changer transitions 25/1593 dead transitions. [2022-11-18 20:00:27,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 719 places, 1593 transitions, 17607 flow [2022-11-18 20:00:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-11-18 20:00:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2022-11-18 20:00:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 10578 transitions. [2022-11-18 20:00:28,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.601159354398727 [2022-11-18 20:00:28,012 INFO L72 ComplementDD]: Start complementDD. Operand 83 states and 10578 transitions. [2022-11-18 20:00:28,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 10578 transitions. [2022-11-18 20:00:28,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:00:28,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 83 states and 10578 transitions. [2022-11-18 20:00:28,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 84 states, 83 states have (on average 127.44578313253012) internal successors, (10578), 83 states have internal predecessors, (10578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:28,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 84 states, 84 states have (on average 212.0) internal successors, (17808), 84 states have internal predecessors, (17808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:28,055 INFO L81 ComplementDD]: Finished complementDD. Result has 84 states, 84 states have (on average 212.0) internal successors, (17808), 84 states have internal predecessors, (17808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:28,055 INFO L175 Difference]: Start difference. First operand has 649 places, 619 transitions, 5454 flow. Second operand 83 states and 10578 transitions. [2022-11-18 20:00:28,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 719 places, 1593 transitions, 17607 flow [2022-11-18 20:00:29,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 1593 transitions, 16281 flow, removed 655 selfloop flow, removed 13 redundant places. [2022-11-18 20:00:29,058 INFO L231 Difference]: Finished difference. Result has 759 places, 712 transitions, 6906 flow [2022-11-18 20:00:29,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=4454, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=83, PETRI_FLOW=6906, PETRI_PLACES=759, PETRI_TRANSITIONS=712} [2022-11-18 20:00:29,060 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 562 predicate places. [2022-11-18 20:00:29,061 INFO L495 AbstractCegarLoop]: Abstraction has has 759 places, 712 transitions, 6906 flow [2022-11-18 20:00:29,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:29,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:00:29,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:29,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:00:29,063 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 20:00:29,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:29,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1111575394, now seen corresponding path program 11 times [2022-11-18 20:00:29,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:29,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809914272] [2022-11-18 20:00:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:29,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:32,655 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 20:00:32,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:32,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809914272] [2022-11-18 20:00:32,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809914272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:32,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:32,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-18 20:00:32,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690520057] [2022-11-18 20:00:32,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:32,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:00:32,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:32,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:00:32,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1180, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:00:32,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-18 20:00:32,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 759 places, 712 transitions, 6906 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:32,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:00:32,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-18 20:00:32,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:00,296 INFO L130 PetriNetUnfolder]: 4289/15502 cut-off events. [2022-11-18 20:01:00,296 INFO L131 PetriNetUnfolder]: For 171269/171397 co-relation queries the response was YES. [2022-11-18 20:01:00,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64293 conditions, 15502 events. 4289/15502 cut-off events. For 171269/171397 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 164275 event pairs, 2967 based on Foata normal form. 12/14683 useless extension candidates. Maximal degree in co-relation 63932. Up to 6674 conditions per place. [2022-11-18 20:01:00,794 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 847 selfloop transitions, 141 changer transitions 34/1128 dead transitions. [2022-11-18 20:01:00,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 1128 transitions, 13121 flow [2022-11-18 20:01:00,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:01:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-18 20:01:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6720 transitions. [2022-11-18 20:01:00,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5980776076895692 [2022-11-18 20:01:00,804 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6720 transitions. [2022-11-18 20:01:00,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6720 transitions. [2022-11-18 20:01:00,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:00,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6720 transitions. [2022-11-18 20:01:00,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 126.79245283018868) internal successors, (6720), 53 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:00,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 212.0) internal successors, (11448), 54 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:00,833 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 212.0) internal successors, (11448), 54 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:00,833 INFO L175 Difference]: Start difference. First operand has 759 places, 712 transitions, 6906 flow. Second operand 53 states and 6720 transitions. [2022-11-18 20:01:00,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 1128 transitions, 13121 flow [2022-11-18 20:01:02,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 1128 transitions, 11493 flow, removed 554 selfloop flow, removed 33 redundant places. [2022-11-18 20:01:02,266 INFO L231 Difference]: Finished difference. Result has 792 places, 720 transitions, 6061 flow [2022-11-18 20:01:02,267 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=5623, PETRI_DIFFERENCE_MINUEND_PLACES=714, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6061, PETRI_PLACES=792, PETRI_TRANSITIONS=720} [2022-11-18 20:01:02,267 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 595 predicate places. [2022-11-18 20:01:02,267 INFO L495 AbstractCegarLoop]: Abstraction has has 792 places, 720 transitions, 6061 flow [2022-11-18 20:01:02,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:02,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:02,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:02,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:01:02,269 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 20:01:02,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:02,269 INFO L85 PathProgramCache]: Analyzing trace with hash -642098106, now seen corresponding path program 12 times [2022-11-18 20:01:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:02,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238660150] [2022-11-18 20:01:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:02,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:04,760 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 20:01:04,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:04,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238660150] [2022-11-18 20:01:04,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238660150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:04,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:04,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-18 20:01:04,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915625977] [2022-11-18 20:01:04,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:04,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:01:04,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:04,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:01:04,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:01:04,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-18 20:01:04,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 720 transitions, 6061 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:04,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:04,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-18 20:01:04,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand