/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 23:14:59,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 23:14:59,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 23:14:59,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 23:14:59,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 23:14:59,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 23:14:59,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 23:14:59,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 23:14:59,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 23:14:59,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 23:14:59,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 23:14:59,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 23:14:59,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 23:14:59,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 23:14:59,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 23:14:59,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 23:14:59,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 23:14:59,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 23:14:59,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 23:14:59,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 23:14:59,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 23:14:59,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 23:14:59,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 23:14:59,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 23:14:59,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 23:14:59,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 23:14:59,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 23:14:59,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 23:14:59,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 23:14:59,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 23:14:59,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 23:14:59,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 23:14:59,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 23:14:59,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 23:14:59,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 23:14:59,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 23:14:59,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 23:14:59,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 23:14:59,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 23:14:59,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 23:14:59,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 23:14:59,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 23:14:59,532 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 23:14:59,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 23:14:59,533 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 23:14:59,534 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 23:14:59,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 23:14:59,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 23:14:59,534 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 23:14:59,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 23:14:59,535 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 23:14:59,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 23:14:59,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 23:14:59,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 23:14:59,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 23:14:59,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 23:14:59,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 23:14:59,536 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 23:14:59,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 23:14:59,536 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 23:14:59,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 23:14:59,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 23:14:59,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 23:14:59,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 23:14:59,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 23:14:59,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:14:59,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 23:14:59,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 23:14:59,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 23:14:59,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 23:14:59,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 23:14:59,539 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 23:14:59,539 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 23:14:59,539 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 23:14:59,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 23:14:59,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 23:14:59,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 23:14:59,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 23:14:59,825 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 23:14:59,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2022-09-20 23:14:59,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f487aa065/c4d354889b744fbdb61cef7d8f56089b/FLAG96047fde1 [2022-09-20 23:15:00,311 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 23:15:00,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2022-09-20 23:15:00,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f487aa065/c4d354889b744fbdb61cef7d8f56089b/FLAG96047fde1 [2022-09-20 23:15:00,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f487aa065/c4d354889b744fbdb61cef7d8f56089b [2022-09-20 23:15:00,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 23:15:00,706 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 23:15:00,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 23:15:00,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 23:15:00,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 23:15:00,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:15:00" (1/1) ... [2022-09-20 23:15:00,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656b76fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:00, skipping insertion in model container [2022-09-20 23:15:00,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:15:00" (1/1) ... [2022-09-20 23:15:00,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 23:15:00,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 23:15:00,958 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-09-20 23:15:00,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:15:00,990 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 23:15:01,023 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-09-20 23:15:01,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:15:01,040 INFO L208 MainTranslator]: Completed translation [2022-09-20 23:15:01,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:01 WrapperNode [2022-09-20 23:15:01,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 23:15:01,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 23:15:01,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 23:15:01,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 23:15:01,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:01" (1/1) ... [2022-09-20 23:15:01,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:01" (1/1) ... [2022-09-20 23:15:01,096 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 307 [2022-09-20 23:15:01,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 23:15:01,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 23:15:01,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 23:15:01,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 23:15:01,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:01" (1/1) ... [2022-09-20 23:15:01,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:01" (1/1) ... [2022-09-20 23:15:01,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:01" (1/1) ... [2022-09-20 23:15:01,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:01" (1/1) ... [2022-09-20 23:15:01,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:01" (1/1) ... [2022-09-20 23:15:01,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:01" (1/1) ... [2022-09-20 23:15:01,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:01" (1/1) ... [2022-09-20 23:15:01,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 23:15:01,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 23:15:01,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 23:15:01,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 23:15:01,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:01" (1/1) ... [2022-09-20 23:15:01,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:15:01,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:15:01,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 23:15:01,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 23:15:01,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 23:15:01,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 23:15:01,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 23:15:01,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 23:15:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 23:15:01,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 23:15:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 23:15:01,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 23:15:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 23:15:01,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 23:15:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-20 23:15:01,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-20 23:15:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 23:15:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 23:15:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 23:15:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 23:15:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 23:15:01,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 23:15:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 23:15:01,201 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 23:15:01,346 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 23:15:01,347 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 23:15:01,814 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 23:15:01,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 23:15:01,957 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-20 23:15:01,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:15:01 BoogieIcfgContainer [2022-09-20 23:15:01,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 23:15:01,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 23:15:01,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 23:15:01,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 23:15:01,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 11:15:00" (1/3) ... [2022-09-20 23:15:01,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746cbe37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:15:01, skipping insertion in model container [2022-09-20 23:15:01,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:15:01" (2/3) ... [2022-09-20 23:15:01,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746cbe37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:15:01, skipping insertion in model container [2022-09-20 23:15:01,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:15:01" (3/3) ... [2022-09-20 23:15:01,967 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2022-09-20 23:15:01,982 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 23:15:01,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 23:15:01,983 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 23:15:02,058 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-20 23:15:02,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 231 transitions, 494 flow [2022-09-20 23:15:02,245 INFO L130 PetriNetUnfolder]: 18/227 cut-off events. [2022-09-20 23:15:02,245 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 23:15:02,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 227 events. 18/227 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 118 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 188. Up to 2 conditions per place. [2022-09-20 23:15:02,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 231 transitions, 494 flow [2022-09-20 23:15:02,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 214 transitions, 452 flow [2022-09-20 23:15:02,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 23:15:02,272 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=false, 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;@2d9b7263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 23:15:02,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-20 23:15:02,312 INFO L130 PetriNetUnfolder]: 18/213 cut-off events. [2022-09-20 23:15:02,312 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 23:15:02,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:15:02,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:15:02,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:15:02,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:15:02,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1997656768, now seen corresponding path program 1 times [2022-09-20 23:15:02,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:15:02,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632275096] [2022-09-20 23:15:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:02,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:15:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:15:02,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:15:02,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632275096] [2022-09-20 23:15:02,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632275096] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:15:02,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:15:02,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 23:15:02,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603722812] [2022-09-20 23:15:02,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:15:02,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 23:15:02,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:15:02,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 23:15:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 23:15:02,709 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 231 [2022-09-20 23:15:02,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 214 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:02,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:15:02,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 231 [2022-09-20 23:15:02,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:15:02,949 INFO L130 PetriNetUnfolder]: 226/753 cut-off events. [2022-09-20 23:15:02,949 INFO L131 PetriNetUnfolder]: For 145/146 co-relation queries the response was YES. [2022-09-20 23:15:02,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 753 events. 226/753 cut-off events. For 145/146 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3411 event pairs, 121 based on Foata normal form. 197/865 useless extension candidates. Maximal degree in co-relation 906. Up to 306 conditions per place. [2022-09-20 23:15:02,963 INFO L137 encePairwiseOnDemand]: 219/231 looper letters, 14 selfloop transitions, 0 changer transitions 6/202 dead transitions. [2022-09-20 23:15:02,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 202 transitions, 456 flow [2022-09-20 23:15:02,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 23:15:02,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 23:15:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 434 transitions. [2022-09-20 23:15:02,983 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9393939393939394 [2022-09-20 23:15:02,983 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 434 transitions. [2022-09-20 23:15:02,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 434 transitions. [2022-09-20 23:15:02,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:15:02,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 434 transitions. [2022-09-20 23:15:02,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 217.0) internal successors, (434), 2 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:03,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:03,004 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:03,005 INFO L175 Difference]: Start difference. First operand has 209 places, 214 transitions, 452 flow. Second operand 2 states and 434 transitions. [2022-09-20 23:15:03,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 202 transitions, 456 flow [2022-09-20 23:15:03,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 202 transitions, 440 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 23:15:03,018 INFO L231 Difference]: Finished difference. Result has 202 places, 196 transitions, 400 flow [2022-09-20 23:15:03,020 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=400, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2022-09-20 23:15:03,025 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places. [2022-09-20 23:15:03,025 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 400 flow [2022-09-20 23:15:03,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:03,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:15:03,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:15:03,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 23:15:03,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:15:03,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:15:03,030 INFO L85 PathProgramCache]: Analyzing trace with hash -806856785, now seen corresponding path program 1 times [2022-09-20 23:15:03,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:15:03,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613062675] [2022-09-20 23:15:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:03,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:15:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:15:03,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:15:03,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613062675] [2022-09-20 23:15:03,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613062675] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:15:03,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:15:03,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 23:15:03,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933035425] [2022-09-20 23:15:03,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:15:03,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 23:15:03,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:15:03,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 23:15:03,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 23:15:03,419 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 231 [2022-09-20 23:15:03,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:03,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:15:03,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 231 [2022-09-20 23:15:03,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:15:03,667 INFO L130 PetriNetUnfolder]: 251/831 cut-off events. [2022-09-20 23:15:03,667 INFO L131 PetriNetUnfolder]: For 39/40 co-relation queries the response was YES. [2022-09-20 23:15:03,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227 conditions, 831 events. 251/831 cut-off events. For 39/40 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3911 event pairs, 32 based on Foata normal form. 1/748 useless extension candidates. Maximal degree in co-relation 1224. Up to 249 conditions per place. [2022-09-20 23:15:03,678 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 46 selfloop transitions, 3 changer transitions 4/210 dead transitions. [2022-09-20 23:15:03,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 210 transitions, 539 flow [2022-09-20 23:15:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 23:15:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 23:15:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 919 transitions. [2022-09-20 23:15:03,681 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7956709956709956 [2022-09-20 23:15:03,681 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 919 transitions. [2022-09-20 23:15:03,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 919 transitions. [2022-09-20 23:15:03,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:15:03,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 919 transitions. [2022-09-20 23:15:03,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:03,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:03,689 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:03,689 INFO L175 Difference]: Start difference. First operand has 202 places, 196 transitions, 400 flow. Second operand 5 states and 919 transitions. [2022-09-20 23:15:03,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 210 transitions, 539 flow [2022-09-20 23:15:03,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 210 transitions, 539 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 23:15:03,698 INFO L231 Difference]: Finished difference. Result has 203 places, 198 transitions, 423 flow [2022-09-20 23:15:03,698 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=423, PETRI_PLACES=203, PETRI_TRANSITIONS=198} [2022-09-20 23:15:03,699 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -6 predicate places. [2022-09-20 23:15:03,699 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 198 transitions, 423 flow [2022-09-20 23:15:03,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:03,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:15:03,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:15:03,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 23:15:03,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:15:03,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:15:03,703 INFO L85 PathProgramCache]: Analyzing trace with hash 670271370, now seen corresponding path program 1 times [2022-09-20 23:15:03,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:15:03,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420243629] [2022-09-20 23:15:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:03,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:15:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:15:03,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:15:03,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420243629] [2022-09-20 23:15:03,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420243629] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:15:03,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:15:03,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 23:15:03,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425476585] [2022-09-20 23:15:03,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:15:03,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 23:15:03,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:15:03,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 23:15:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 23:15:03,854 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 231 [2022-09-20 23:15:03,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 198 transitions, 423 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:03,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:15:03,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 231 [2022-09-20 23:15:03,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:15:04,092 INFO L130 PetriNetUnfolder]: 395/1111 cut-off events. [2022-09-20 23:15:04,092 INFO L131 PetriNetUnfolder]: For 214/216 co-relation queries the response was YES. [2022-09-20 23:15:04,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1910 conditions, 1111 events. 395/1111 cut-off events. For 214/216 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5687 event pairs, 70 based on Foata normal form. 18/1018 useless extension candidates. Maximal degree in co-relation 1903. Up to 431 conditions per place. [2022-09-20 23:15:04,103 INFO L137 encePairwiseOnDemand]: 228/231 looper letters, 33 selfloop transitions, 2 changer transitions 0/211 dead transitions. [2022-09-20 23:15:04,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 211 transitions, 531 flow [2022-09-20 23:15:04,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 23:15:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 23:15:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2022-09-20 23:15:04,106 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-09-20 23:15:04,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2022-09-20 23:15:04,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2022-09-20 23:15:04,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:15:04,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2022-09-20 23:15:04,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,110 INFO L175 Difference]: Start difference. First operand has 203 places, 198 transitions, 423 flow. Second operand 3 states and 627 transitions. [2022-09-20 23:15:04,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 211 transitions, 531 flow [2022-09-20 23:15:04,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 211 transitions, 523 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-20 23:15:04,116 INFO L231 Difference]: Finished difference. Result has 201 places, 199 transitions, 430 flow [2022-09-20 23:15:04,116 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=201, PETRI_TRANSITIONS=199} [2022-09-20 23:15:04,118 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -8 predicate places. [2022-09-20 23:15:04,118 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 199 transitions, 430 flow [2022-09-20 23:15:04,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:15:04,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:15:04,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 23:15:04,120 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:15:04,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:15:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1888535968, now seen corresponding path program 1 times [2022-09-20 23:15:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:15:04,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154027593] [2022-09-20 23:15:04,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:04,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:15:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:04,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:15:04,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:15:04,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154027593] [2022-09-20 23:15:04,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154027593] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:15:04,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:15:04,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 23:15:04,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270510545] [2022-09-20 23:15:04,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:15:04,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 23:15:04,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:15:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 23:15:04,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 23:15:04,231 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 231 [2022-09-20 23:15:04,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 199 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:15:04,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 231 [2022-09-20 23:15:04,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:15:04,441 INFO L130 PetriNetUnfolder]: 299/1051 cut-off events. [2022-09-20 23:15:04,442 INFO L131 PetriNetUnfolder]: For 359/360 co-relation queries the response was YES. [2022-09-20 23:15:04,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 1051 events. 299/1051 cut-off events. For 359/360 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5570 event pairs, 106 based on Foata normal form. 14/916 useless extension candidates. Maximal degree in co-relation 1776. Up to 353 conditions per place. [2022-09-20 23:15:04,450 INFO L137 encePairwiseOnDemand]: 228/231 looper letters, 34 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2022-09-20 23:15:04,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 212 transitions, 547 flow [2022-09-20 23:15:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 23:15:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 23:15:04,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2022-09-20 23:15:04,452 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9033189033189033 [2022-09-20 23:15:04,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2022-09-20 23:15:04,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2022-09-20 23:15:04,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:15:04,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2022-09-20 23:15:04,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,457 INFO L175 Difference]: Start difference. First operand has 201 places, 199 transitions, 430 flow. Second operand 3 states and 626 transitions. [2022-09-20 23:15:04,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 212 transitions, 547 flow [2022-09-20 23:15:04,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 212 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 23:15:04,462 INFO L231 Difference]: Finished difference. Result has 203 places, 200 transitions, 442 flow [2022-09-20 23:15:04,465 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=203, PETRI_TRANSITIONS=200} [2022-09-20 23:15:04,467 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -6 predicate places. [2022-09-20 23:15:04,467 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 200 transitions, 442 flow [2022-09-20 23:15:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:15:04,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:15:04,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 23:15:04,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:15:04,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:15:04,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1955291383, now seen corresponding path program 1 times [2022-09-20 23:15:04,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:15:04,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59828809] [2022-09-20 23:15:04,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:04,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:15:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:15:04,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:15:04,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59828809] [2022-09-20 23:15:04,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59828809] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:15:04,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:15:04,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 23:15:04,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331566146] [2022-09-20 23:15:04,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:15:04,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 23:15:04,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:15:04,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 23:15:04,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-20 23:15:04,598 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 231 [2022-09-20 23:15:04,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 200 transitions, 442 flow. Second operand has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:15:04,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 231 [2022-09-20 23:15:04,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:15:04,872 INFO L130 PetriNetUnfolder]: 212/971 cut-off events. [2022-09-20 23:15:04,872 INFO L131 PetriNetUnfolder]: For 388/389 co-relation queries the response was YES. [2022-09-20 23:15:04,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 971 events. 212/971 cut-off events. For 388/389 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4713 event pairs, 98 based on Foata normal form. 12/882 useless extension candidates. Maximal degree in co-relation 1691. Up to 289 conditions per place. [2022-09-20 23:15:04,881 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 63 selfloop transitions, 11 changer transitions 0/230 dead transitions. [2022-09-20 23:15:04,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 230 transitions, 671 flow [2022-09-20 23:15:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 23:15:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 23:15:04,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1671 transitions. [2022-09-20 23:15:04,886 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8037518037518038 [2022-09-20 23:15:04,886 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1671 transitions. [2022-09-20 23:15:04,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1671 transitions. [2022-09-20 23:15:04,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:15:04,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1671 transitions. [2022-09-20 23:15:04,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 185.66666666666666) internal successors, (1671), 9 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,915 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,915 INFO L175 Difference]: Start difference. First operand has 203 places, 200 transitions, 442 flow. Second operand 9 states and 1671 transitions. [2022-09-20 23:15:04,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 230 transitions, 671 flow [2022-09-20 23:15:04,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 230 transitions, 668 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 23:15:04,921 INFO L231 Difference]: Finished difference. Result has 212 places, 204 transitions, 482 flow [2022-09-20 23:15:04,921 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=482, PETRI_PLACES=212, PETRI_TRANSITIONS=204} [2022-09-20 23:15:04,924 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2022-09-20 23:15:04,924 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 204 transitions, 482 flow [2022-09-20 23:15:04,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:04,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:15:04,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:15:04,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 23:15:04,925 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:15:04,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:15:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1033263413, now seen corresponding path program 1 times [2022-09-20 23:15:04,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:15:04,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518850186] [2022-09-20 23:15:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:04,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:15:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:15:05,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:15:05,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518850186] [2022-09-20 23:15:05,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518850186] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:15:05,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:15:05,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 23:15:05,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506663107] [2022-09-20 23:15:05,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:15:05,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 23:15:05,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:15:05,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 23:15:05,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-20 23:15:05,032 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 231 [2022-09-20 23:15:05,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 204 transitions, 482 flow. Second operand has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:05,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:15:05,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 231 [2022-09-20 23:15:05,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:15:05,319 INFO L130 PetriNetUnfolder]: 236/1235 cut-off events. [2022-09-20 23:15:05,320 INFO L131 PetriNetUnfolder]: For 512/514 co-relation queries the response was YES. [2022-09-20 23:15:05,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 1235 events. 236/1235 cut-off events. For 512/514 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6828 event pairs, 110 based on Foata normal form. 20/1127 useless extension candidates. Maximal degree in co-relation 2088. Up to 346 conditions per place. [2022-09-20 23:15:05,329 INFO L137 encePairwiseOnDemand]: 223/231 looper letters, 58 selfloop transitions, 8 changer transitions 0/222 dead transitions. [2022-09-20 23:15:05,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 222 transitions, 672 flow [2022-09-20 23:15:05,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 23:15:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 23:15:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1303 transitions. [2022-09-20 23:15:05,333 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8058132343846629 [2022-09-20 23:15:05,333 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1303 transitions. [2022-09-20 23:15:05,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1303 transitions. [2022-09-20 23:15:05,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:15:05,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1303 transitions. [2022-09-20 23:15:05,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:05,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:05,340 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:05,340 INFO L175 Difference]: Start difference. First operand has 212 places, 204 transitions, 482 flow. Second operand 7 states and 1303 transitions. [2022-09-20 23:15:05,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 222 transitions, 672 flow [2022-09-20 23:15:05,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 222 transitions, 663 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 23:15:05,347 INFO L231 Difference]: Finished difference. Result has 217 places, 206 transitions, 503 flow [2022-09-20 23:15:05,347 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=503, PETRI_PLACES=217, PETRI_TRANSITIONS=206} [2022-09-20 23:15:05,349 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 8 predicate places. [2022-09-20 23:15:05,350 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 206 transitions, 503 flow [2022-09-20 23:15:05,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:05,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:15:05,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:15:05,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 23:15:05,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:15:05,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:15:05,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1753532725, now seen corresponding path program 1 times [2022-09-20 23:15:05,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:15:05,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126088253] [2022-09-20 23:15:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:05,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:15:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:15:05,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:15:05,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126088253] [2022-09-20 23:15:05,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126088253] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:15:05,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007445135] [2022-09-20 23:15:05,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:05,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:15:05,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:15:05,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:15:05,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 23:15:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:05,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 13 conjunts are in the unsatisfiable core [2022-09-20 23:15:05,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:15:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:15:06,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:15:06,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:15:06,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007445135] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:15:06,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:15:06,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 8] total 19 [2022-09-20 23:15:06,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604092999] [2022-09-20 23:15:06,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:15:06,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:15:06,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:15:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:15:06,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-09-20 23:15:06,684 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 231 [2022-09-20 23:15:06,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 206 transitions, 503 flow. Second operand has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:06,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:15:06,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 231 [2022-09-20 23:15:06,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:15:11,175 INFO L130 PetriNetUnfolder]: 14909/28816 cut-off events. [2022-09-20 23:15:11,176 INFO L131 PetriNetUnfolder]: For 8639/8639 co-relation queries the response was YES. [2022-09-20 23:15:11,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57776 conditions, 28816 events. 14909/28816 cut-off events. For 8639/8639 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 266361 event pairs, 1712 based on Foata normal form. 0/24291 useless extension candidates. Maximal degree in co-relation 57765. Up to 4417 conditions per place. [2022-09-20 23:15:11,391 INFO L137 encePairwiseOnDemand]: 220/231 looper letters, 205 selfloop transitions, 32 changer transitions 3/409 dead transitions. [2022-09-20 23:15:11,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 409 transitions, 1603 flow [2022-09-20 23:15:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 23:15:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 23:15:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3178 transitions. [2022-09-20 23:15:11,398 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2022-09-20 23:15:11,398 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3178 transitions. [2022-09-20 23:15:11,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3178 transitions. [2022-09-20 23:15:11,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:15:11,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3178 transitions. [2022-09-20 23:15:11,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 198.625) internal successors, (3178), 16 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:11,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 231.0) internal successors, (3927), 17 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:11,415 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 231.0) internal successors, (3927), 17 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:11,415 INFO L175 Difference]: Start difference. First operand has 217 places, 206 transitions, 503 flow. Second operand 16 states and 3178 transitions. [2022-09-20 23:15:11,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 409 transitions, 1603 flow [2022-09-20 23:15:11,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 409 transitions, 1591 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 23:15:11,425 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 699 flow [2022-09-20 23:15:11,426 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=699, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2022-09-20 23:15:11,426 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 31 predicate places. [2022-09-20 23:15:11,427 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 699 flow [2022-09-20 23:15:11,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:11,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:15:11,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:15:11,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-20 23:15:11,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:15:11,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:15:11,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:15:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash -551279969, now seen corresponding path program 2 times [2022-09-20 23:15:11,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:15:11,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920446167] [2022-09-20 23:15:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:11,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:15:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:15:11,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:15:11,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920446167] [2022-09-20 23:15:11,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920446167] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:15:11,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:15:11,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 23:15:11,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087714909] [2022-09-20 23:15:11,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:15:11,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 23:15:11,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:15:11,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 23:15:11,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-09-20 23:15:11,946 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 231 [2022-09-20 23:15:11,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 699 flow. Second operand has 8 states, 8 states have (on average 186.625) internal successors, (1493), 8 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:11,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:15:11,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 231 [2022-09-20 23:15:11,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:15:15,225 INFO L130 PetriNetUnfolder]: 12796/24625 cut-off events. [2022-09-20 23:15:15,226 INFO L131 PetriNetUnfolder]: For 23912/24111 co-relation queries the response was YES. [2022-09-20 23:15:15,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64259 conditions, 24625 events. 12796/24625 cut-off events. For 23912/24111 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 226830 event pairs, 1184 based on Foata normal form. 57/23990 useless extension candidates. Maximal degree in co-relation 64236. Up to 8595 conditions per place. [2022-09-20 23:15:15,424 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 137 selfloop transitions, 17 changer transitions 10/337 dead transitions. [2022-09-20 23:15:15,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 337 transitions, 1465 flow [2022-09-20 23:15:15,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 23:15:15,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 23:15:15,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1585 transitions. [2022-09-20 23:15:15,427 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8576839826839827 [2022-09-20 23:15:15,428 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1585 transitions. [2022-09-20 23:15:15,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1585 transitions. [2022-09-20 23:15:15,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:15:15,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1585 transitions. [2022-09-20 23:15:15,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.125) internal successors, (1585), 8 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:15,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:15,436 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:15,436 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 699 flow. Second operand 8 states and 1585 transitions. [2022-09-20 23:15:15,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 337 transitions, 1465 flow [2022-09-20 23:15:15,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 337 transitions, 1464 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 23:15:15,734 INFO L231 Difference]: Finished difference. Result has 250 places, 246 transitions, 814 flow [2022-09-20 23:15:15,735 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=814, PETRI_PLACES=250, PETRI_TRANSITIONS=246} [2022-09-20 23:15:15,735 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 41 predicate places. [2022-09-20 23:15:15,735 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 246 transitions, 814 flow [2022-09-20 23:15:15,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.625) internal successors, (1493), 8 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:15,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:15:15,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:15:15,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 23:15:15,737 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:15:15,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:15:15,737 INFO L85 PathProgramCache]: Analyzing trace with hash 164814529, now seen corresponding path program 3 times [2022-09-20 23:15:15,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:15:15,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872115130] [2022-09-20 23:15:15,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:15,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:15:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:15:15,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:15:15,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872115130] [2022-09-20 23:15:15,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872115130] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:15:15,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775576496] [2022-09-20 23:15:15,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 23:15:15,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:15:15,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:15:15,944 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:15:15,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 23:15:16,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-09-20 23:15:16,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:15:16,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 14 conjunts are in the unsatisfiable core [2022-09-20 23:15:16,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:15:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:15:16,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 23:15:16,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775576496] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:15:16,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 23:15:16,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-09-20 23:15:16,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854999355] [2022-09-20 23:15:16,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:15:16,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:15:16,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:15:16,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:15:16,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-09-20 23:15:16,802 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 231 [2022-09-20 23:15:16,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 246 transitions, 814 flow. Second operand has 9 states, 9 states have (on average 184.44444444444446) internal successors, (1660), 9 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:16,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:15:16,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 231 [2022-09-20 23:15:16,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:15:22,629 INFO L130 PetriNetUnfolder]: 20756/37535 cut-off events. [2022-09-20 23:15:22,629 INFO L131 PetriNetUnfolder]: For 56836/56836 co-relation queries the response was YES. [2022-09-20 23:15:22,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111477 conditions, 37535 events. 20756/37535 cut-off events. For 56836/56836 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 344144 event pairs, 1963 based on Foata normal form. 506/36950 useless extension candidates. Maximal degree in co-relation 111450. Up to 12145 conditions per place. [2022-09-20 23:15:23,243 INFO L137 encePairwiseOnDemand]: 214/231 looper letters, 313 selfloop transitions, 70 changer transitions 10/558 dead transitions. [2022-09-20 23:15:23,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 558 transitions, 3145 flow [2022-09-20 23:15:23,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 23:15:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 23:15:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4115 transitions. [2022-09-20 23:15:23,252 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8482787054215626 [2022-09-20 23:15:23,253 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4115 transitions. [2022-09-20 23:15:23,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4115 transitions. [2022-09-20 23:15:23,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:15:23,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4115 transitions. [2022-09-20 23:15:23,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 195.95238095238096) internal successors, (4115), 21 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:23,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 231.0) internal successors, (5082), 22 states have internal predecessors, (5082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:23,273 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 231.0) internal successors, (5082), 22 states have internal predecessors, (5082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:23,274 INFO L175 Difference]: Start difference. First operand has 250 places, 246 transitions, 814 flow. Second operand 21 states and 4115 transitions. [2022-09-20 23:15:23,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 558 transitions, 3145 flow [2022-09-20 23:15:23,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 558 transitions, 3145 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 23:15:23,879 INFO L231 Difference]: Finished difference. Result has 285 places, 300 transitions, 1463 flow [2022-09-20 23:15:23,880 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1463, PETRI_PLACES=285, PETRI_TRANSITIONS=300} [2022-09-20 23:15:23,880 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 76 predicate places. [2022-09-20 23:15:23,880 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 300 transitions, 1463 flow [2022-09-20 23:15:23,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 184.44444444444446) internal successors, (1660), 9 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:23,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:15:23,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:15:23,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-20 23:15:24,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-09-20 23:15:24,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:15:24,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:15:24,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2146573023, now seen corresponding path program 4 times [2022-09-20 23:15:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:15:24,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459033968] [2022-09-20 23:15:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:24,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:15:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:15:24,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:15:24,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459033968] [2022-09-20 23:15:24,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459033968] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:15:24,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:15:24,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 23:15:24,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271345642] [2022-09-20 23:15:24,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:15:24,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:15:24,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:15:24,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:15:24,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-09-20 23:15:24,434 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 231 [2022-09-20 23:15:24,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 300 transitions, 1463 flow. Second operand has 9 states, 9 states have (on average 186.22222222222223) internal successors, (1676), 9 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:24,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:15:24,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 231 [2022-09-20 23:15:24,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:15:31,223 INFO L130 PetriNetUnfolder]: 19250/37894 cut-off events. [2022-09-20 23:15:31,224 INFO L131 PetriNetUnfolder]: For 160720/161549 co-relation queries the response was YES. [2022-09-20 23:15:31,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139237 conditions, 37894 events. 19250/37894 cut-off events. For 160720/161549 co-relation queries the response was YES. Maximal size of possible extension queue 1606. Compared 380145 event pairs, 2412 based on Foata normal form. 237/36307 useless extension candidates. Maximal degree in co-relation 139194. Up to 11384 conditions per place. [2022-09-20 23:15:31,785 INFO L137 encePairwiseOnDemand]: 219/231 looper letters, 178 selfloop transitions, 64 changer transitions 11/430 dead transitions. [2022-09-20 23:15:31,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 430 transitions, 2904 flow [2022-09-20 23:15:31,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 23:15:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 23:15:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1596 transitions. [2022-09-20 23:15:31,790 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2022-09-20 23:15:31,790 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1596 transitions. [2022-09-20 23:15:31,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1596 transitions. [2022-09-20 23:15:31,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:15:31,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1596 transitions. [2022-09-20 23:15:31,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 199.5) internal successors, (1596), 8 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:31,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:31,797 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:31,797 INFO L175 Difference]: Start difference. First operand has 285 places, 300 transitions, 1463 flow. Second operand 8 states and 1596 transitions. [2022-09-20 23:15:31,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 430 transitions, 2904 flow [2022-09-20 23:15:33,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 430 transitions, 2842 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-09-20 23:15:33,399 INFO L231 Difference]: Finished difference. Result has 292 places, 324 transitions, 1905 flow [2022-09-20 23:15:33,400 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1905, PETRI_PLACES=292, PETRI_TRANSITIONS=324} [2022-09-20 23:15:33,400 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 83 predicate places. [2022-09-20 23:15:33,400 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 324 transitions, 1905 flow [2022-09-20 23:15:33,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 186.22222222222223) internal successors, (1676), 9 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:33,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:15:33,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:15:33,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 23:15:33,401 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:15:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:15:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash 499668427, now seen corresponding path program 5 times [2022-09-20 23:15:33,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:15:33,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555658797] [2022-09-20 23:15:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:33,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:15:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:15:33,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:15:33,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555658797] [2022-09-20 23:15:33,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555658797] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:15:33,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:15:33,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 23:15:33,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378684159] [2022-09-20 23:15:33,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:15:33,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:15:33,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:15:33,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:15:33,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-09-20 23:15:33,634 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 231 [2022-09-20 23:15:33,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 324 transitions, 1905 flow. Second operand has 9 states, 9 states have (on average 186.22222222222223) internal successors, (1676), 9 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:33,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:15:33,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 231 [2022-09-20 23:15:33,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:15:44,136 INFO L130 PetriNetUnfolder]: 27624/55306 cut-off events. [2022-09-20 23:15:44,137 INFO L131 PetriNetUnfolder]: For 273495/274945 co-relation queries the response was YES. [2022-09-20 23:15:44,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207101 conditions, 55306 events. 27624/55306 cut-off events. For 273495/274945 co-relation queries the response was YES. Maximal size of possible extension queue 2632. Compared 594410 event pairs, 5879 based on Foata normal form. 375/52426 useless extension candidates. Maximal degree in co-relation 207055. Up to 11625 conditions per place. [2022-09-20 23:15:45,078 INFO L137 encePairwiseOnDemand]: 218/231 looper letters, 319 selfloop transitions, 155 changer transitions 8/659 dead transitions. [2022-09-20 23:15:45,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 659 transitions, 5448 flow [2022-09-20 23:15:45,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 23:15:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 23:15:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2796 transitions. [2022-09-20 23:15:45,084 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8645640074211502 [2022-09-20 23:15:45,084 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2796 transitions. [2022-09-20 23:15:45,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2796 transitions. [2022-09-20 23:15:45,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:15:45,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2796 transitions. [2022-09-20 23:15:45,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 199.71428571428572) internal successors, (2796), 14 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:45,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 231.0) internal successors, (3465), 15 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:45,098 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 231.0) internal successors, (3465), 15 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:45,098 INFO L175 Difference]: Start difference. First operand has 292 places, 324 transitions, 1905 flow. Second operand 14 states and 2796 transitions. [2022-09-20 23:15:45,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 659 transitions, 5448 flow [2022-09-20 23:15:47,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 659 transitions, 5272 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-09-20 23:15:47,678 INFO L231 Difference]: Finished difference. Result has 311 places, 430 transitions, 3545 flow [2022-09-20 23:15:47,679 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3545, PETRI_PLACES=311, PETRI_TRANSITIONS=430} [2022-09-20 23:15:47,679 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 102 predicate places. [2022-09-20 23:15:47,680 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 430 transitions, 3545 flow [2022-09-20 23:15:47,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 186.22222222222223) internal successors, (1676), 9 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:47,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:15:47,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:15:47,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 23:15:47,680 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:15:47,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:15:47,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1961305103, now seen corresponding path program 6 times [2022-09-20 23:15:47,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:15:47,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820184153] [2022-09-20 23:15:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:15:47,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:15:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:15:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:15:47,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:15:47,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820184153] [2022-09-20 23:15:47,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820184153] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:15:47,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:15:47,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 23:15:47,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616119636] [2022-09-20 23:15:47,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:15:47,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:15:47,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:15:47,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:15:47,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-20 23:15:47,905 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 231 [2022-09-20 23:15:47,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 430 transitions, 3545 flow. Second operand has 7 states, 7 states have (on average 190.57142857142858) internal successors, (1334), 7 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:15:47,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:15:47,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 231 [2022-09-20 23:15:47,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:16:03,358 INFO L130 PetriNetUnfolder]: 36092/69280 cut-off events. [2022-09-20 23:16:03,358 INFO L131 PetriNetUnfolder]: For 454075/456742 co-relation queries the response was YES. [2022-09-20 23:16:04,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309361 conditions, 69280 events. 36092/69280 cut-off events. For 454075/456742 co-relation queries the response was YES. Maximal size of possible extension queue 3262. Compared 742073 event pairs, 4894 based on Foata normal form. 933/67714 useless extension candidates. Maximal degree in co-relation 309305. Up to 18722 conditions per place. [2022-09-20 23:16:04,679 INFO L137 encePairwiseOnDemand]: 222/231 looper letters, 341 selfloop transitions, 156 changer transitions 7/682 dead transitions. [2022-09-20 23:16:04,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 682 transitions, 6962 flow [2022-09-20 23:16:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 23:16:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 23:16:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1839 transitions. [2022-09-20 23:16:04,683 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8845598845598845 [2022-09-20 23:16:04,683 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1839 transitions. [2022-09-20 23:16:04,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1839 transitions. [2022-09-20 23:16:04,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:16:04,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1839 transitions. [2022-09-20 23:16:04,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 204.33333333333334) internal successors, (1839), 9 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:04,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:04,691 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:04,691 INFO L175 Difference]: Start difference. First operand has 311 places, 430 transitions, 3545 flow. Second operand 9 states and 1839 transitions. [2022-09-20 23:16:04,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 682 transitions, 6962 flow [2022-09-20 23:16:11,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 682 transitions, 6888 flow, removed 37 selfloop flow, removed 0 redundant places. [2022-09-20 23:16:11,289 INFO L231 Difference]: Finished difference. Result has 324 places, 500 transitions, 4954 flow [2022-09-20 23:16:11,290 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=3511, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4954, PETRI_PLACES=324, PETRI_TRANSITIONS=500} [2022-09-20 23:16:11,290 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 115 predicate places. [2022-09-20 23:16:11,290 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 500 transitions, 4954 flow [2022-09-20 23:16:11,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 190.57142857142858) internal successors, (1334), 7 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:11,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:16:11,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:16:11,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 23:16:11,291 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:16:11,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:16:11,291 INFO L85 PathProgramCache]: Analyzing trace with hash 557367655, now seen corresponding path program 7 times [2022-09-20 23:16:11,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:16:11,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62021029] [2022-09-20 23:16:11,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:16:11,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:16:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:16:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:16:11,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:16:11,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62021029] [2022-09-20 23:16:11,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62021029] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:16:11,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:16:11,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 23:16:11,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847047310] [2022-09-20 23:16:11,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:16:11,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:16:11,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:16:11,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:16:11,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-09-20 23:16:11,496 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 231 [2022-09-20 23:16:11,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 500 transitions, 4954 flow. Second operand has 9 states, 9 states have (on average 189.77777777777777) internal successors, (1708), 9 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:11,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:16:11,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 231 [2022-09-20 23:16:11,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:16:28,533 INFO L130 PetriNetUnfolder]: 35426/69950 cut-off events. [2022-09-20 23:16:28,533 INFO L131 PetriNetUnfolder]: For 488619/491416 co-relation queries the response was YES. [2022-09-20 23:16:29,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319888 conditions, 69950 events. 35426/69950 cut-off events. For 488619/491416 co-relation queries the response was YES. Maximal size of possible extension queue 3452. Compared 769319 event pairs, 6811 based on Foata normal form. 267/67029 useless extension candidates. Maximal degree in co-relation 319826. Up to 31239 conditions per place. [2022-09-20 23:16:29,913 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 275 selfloop transitions, 133 changer transitions 16/602 dead transitions. [2022-09-20 23:16:29,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 602 transitions, 6605 flow [2022-09-20 23:16:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 23:16:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 23:16:29,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1605 transitions. [2022-09-20 23:16:29,917 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8685064935064936 [2022-09-20 23:16:29,917 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1605 transitions. [2022-09-20 23:16:29,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1605 transitions. [2022-09-20 23:16:29,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:16:29,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1605 transitions. [2022-09-20 23:16:29,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 200.625) internal successors, (1605), 8 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:30,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:30,142 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:30,142 INFO L175 Difference]: Start difference. First operand has 324 places, 500 transitions, 4954 flow. Second operand 8 states and 1605 transitions. [2022-09-20 23:16:30,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 602 transitions, 6605 flow [2022-09-20 23:16:37,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 602 transitions, 6504 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-09-20 23:16:37,530 INFO L231 Difference]: Finished difference. Result has 332 places, 511 transitions, 5396 flow [2022-09-20 23:16:37,531 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=4838, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5396, PETRI_PLACES=332, PETRI_TRANSITIONS=511} [2022-09-20 23:16:37,531 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 123 predicate places. [2022-09-20 23:16:37,531 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 511 transitions, 5396 flow [2022-09-20 23:16:37,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.77777777777777) internal successors, (1708), 9 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:37,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:16:37,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:16:37,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-20 23:16:37,532 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:16:37,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:16:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1446024291, now seen corresponding path program 8 times [2022-09-20 23:16:37,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:16:37,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114530989] [2022-09-20 23:16:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:16:37,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:16:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:16:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:16:37,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:16:37,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114530989] [2022-09-20 23:16:37,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114530989] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:16:37,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:16:37,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 23:16:37,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770835546] [2022-09-20 23:16:37,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:16:37,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:16:37,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:16:37,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:16:37,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-20 23:16:37,781 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 231 [2022-09-20 23:16:37,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 511 transitions, 5396 flow. Second operand has 7 states, 7 states have (on average 190.57142857142858) internal successors, (1334), 7 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:37,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:16:37,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 231 [2022-09-20 23:16:37,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:16:52,989 INFO L130 PetriNetUnfolder]: 34700/66672 cut-off events. [2022-09-20 23:16:52,989 INFO L131 PetriNetUnfolder]: For 518791/521505 co-relation queries the response was YES. [2022-09-20 23:16:54,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316917 conditions, 66672 events. 34700/66672 cut-off events. For 518791/521505 co-relation queries the response was YES. Maximal size of possible extension queue 3236. Compared 711384 event pairs, 5298 based on Foata normal form. 432/64645 useless extension candidates. Maximal degree in co-relation 316851. Up to 18460 conditions per place. [2022-09-20 23:16:54,639 INFO L137 encePairwiseOnDemand]: 223/231 looper letters, 286 selfloop transitions, 158 changer transitions 16/638 dead transitions. [2022-09-20 23:16:54,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 638 transitions, 7216 flow [2022-09-20 23:16:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 23:16:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 23:16:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1627 transitions. [2022-09-20 23:16:54,645 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8804112554112554 [2022-09-20 23:16:54,645 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1627 transitions. [2022-09-20 23:16:54,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1627 transitions. [2022-09-20 23:16:54,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:16:54,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1627 transitions. [2022-09-20 23:16:54,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 203.375) internal successors, (1627), 8 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:54,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:54,651 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:16:54,651 INFO L175 Difference]: Start difference. First operand has 332 places, 511 transitions, 5396 flow. Second operand 8 states and 1627 transitions. [2022-09-20 23:16:54,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 638 transitions, 7216 flow [2022-09-20 23:17:03,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 638 transitions, 7078 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-09-20 23:17:03,028 INFO L231 Difference]: Finished difference. Result has 336 places, 505 transitions, 5560 flow [2022-09-20 23:17:03,028 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=5165, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5560, PETRI_PLACES=336, PETRI_TRANSITIONS=505} [2022-09-20 23:17:03,028 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 127 predicate places. [2022-09-20 23:17:03,029 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 505 transitions, 5560 flow [2022-09-20 23:17:03,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 190.57142857142858) internal successors, (1334), 7 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:03,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:03,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:17:03,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-20 23:17:03,029 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:03,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:03,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1286186923, now seen corresponding path program 9 times [2022-09-20 23:17:03,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:03,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075853545] [2022-09-20 23:17:03,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:03,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:03,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:03,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075853545] [2022-09-20 23:17:03,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075853545] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:03,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:03,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 23:17:03,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140199584] [2022-09-20 23:17:03,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:03,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:17:03,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:03,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:17:03,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-09-20 23:17:03,254 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 231 [2022-09-20 23:17:03,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 505 transitions, 5560 flow. Second operand has 9 states, 9 states have (on average 189.77777777777777) internal successors, (1708), 9 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:03,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:03,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 231 [2022-09-20 23:17:03,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand