/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 10:52:59,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 10:52:59,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 10:52:59,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 10:52:59,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 10:52:59,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 10:52:59,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 10:52:59,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 10:53:00,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 10:53:00,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 10:53:00,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 10:53:00,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 10:53:00,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 10:53:00,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 10:53:00,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 10:53:00,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 10:53:00,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 10:53:00,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 10:53:00,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 10:53:00,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 10:53:00,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 10:53:00,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 10:53:00,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 10:53:00,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 10:53:00,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 10:53:00,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 10:53:00,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 10:53:00,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 10:53:00,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 10:53:00,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 10:53:00,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 10:53:00,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 10:53:00,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 10:53:00,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 10:53:00,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 10:53:00,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 10:53:00,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 10:53:00,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 10:53:00,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 10:53:00,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 10:53:00,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 10:53:00,031 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-VariableLbe.epf [2023-01-28 10:53:00,055 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 10:53:00,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 10:53:00,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 10:53:00,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 10:53:00,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 10:53:00,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 10:53:00,057 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 10:53:00,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 10:53:00,057 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 10:53:00,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 10:53:00,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 10:53:00,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 10:53:00,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 10:53:00,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 10:53:00,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 10:53:00,058 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 10:53:00,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 10:53:00,059 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 10:53:00,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 10:53:00,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 10:53:00,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 10:53:00,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 10:53:00,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 10:53:00,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:53:00,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 10:53:00,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 10:53:00,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 10:53:00,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 10:53:00,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 10:53:00,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 10:53:00,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 10:53:00,060 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 10:53:00,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 10:53:00,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 10:53:00,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 10:53:00,263 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 10:53:00,263 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 10:53:00,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-01-28 10:53:01,221 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 10:53:01,392 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 10:53:01,393 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-01-28 10:53:01,400 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abf31b766/2d84c0fcfc50441ca7028edaad90f34b/FLAG5538b571e [2023-01-28 10:53:01,413 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abf31b766/2d84c0fcfc50441ca7028edaad90f34b [2023-01-28 10:53:01,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 10:53:01,416 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 10:53:01,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 10:53:01,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 10:53:01,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 10:53:01,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca07005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01, skipping insertion in model container [2023-01-28 10:53:01,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 10:53:01,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 10:53:01,552 WARN L247 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-series2.wvr.c[4232,4245] [2023-01-28 10:53:01,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:53:01,564 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 10:53:01,587 WARN L247 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-series2.wvr.c[4232,4245] [2023-01-28 10:53:01,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:53:01,595 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:53:01,595 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:53:01,599 INFO L208 MainTranslator]: Completed translation [2023-01-28 10:53:01,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01 WrapperNode [2023-01-28 10:53:01,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 10:53:01,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 10:53:01,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 10:53:01,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 10:53:01,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,634 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 354 [2023-01-28 10:53:01,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 10:53:01,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 10:53:01,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 10:53:01,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 10:53:01,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,668 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 10:53:01,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 10:53:01,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 10:53:01,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 10:53:01,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01" (1/1) ... [2023-01-28 10:53:01,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:53:01,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:53:01,707 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) [2023-01-28 10:53:01,715 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 [2023-01-28 10:53:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 10:53:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 10:53:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 10:53:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 10:53:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 10:53:01,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 10:53:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 10:53:01,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 10:53:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 10:53:01,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 10:53:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 10:53:01,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 10:53:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 10:53:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 10:53:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 10:53:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 10:53:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 10:53:01,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 10:53:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 10:53:01,734 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 10:53:01,819 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 10:53:01,820 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 10:53:02,169 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 10:53:02,320 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 10:53:02,320 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-01-28 10:53:02,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:53:02 BoogieIcfgContainer [2023-01-28 10:53:02,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 10:53:02,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 10:53:02,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 10:53:02,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 10:53:02,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:53:01" (1/3) ... [2023-01-28 10:53:02,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d775f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:53:02, skipping insertion in model container [2023-01-28 10:53:02,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:01" (2/3) ... [2023-01-28 10:53:02,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d775f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:53:02, skipping insertion in model container [2023-01-28 10:53:02,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:53:02" (3/3) ... [2023-01-28 10:53:02,328 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-01-28 10:53:02,339 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 10:53:02,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 10:53:02,339 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 10:53:02,394 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 10:53:02,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 251 transitions, 534 flow [2023-01-28 10:53:02,512 INFO L130 PetriNetUnfolder]: 22/247 cut-off events. [2023-01-28 10:53:02,512 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 10:53:02,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 247 events. 22/247 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 132 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 210. Up to 2 conditions per place. [2023-01-28 10:53:02,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 251 transitions, 534 flow [2023-01-28 10:53:02,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 235 transitions, 494 flow [2023-01-28 10:53:02,526 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 10:53:02,542 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 235 transitions, 494 flow [2023-01-28 10:53:02,544 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 235 transitions, 494 flow [2023-01-28 10:53:02,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 235 transitions, 494 flow [2023-01-28 10:53:02,571 INFO L130 PetriNetUnfolder]: 22/235 cut-off events. [2023-01-28 10:53:02,571 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 10:53:02,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 235 events. 22/235 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 131 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 210. Up to 2 conditions per place. [2023-01-28 10:53:02,575 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-01-28 10:53:10,160 INFO L134 LiptonReduction]: Checked pairs total: 2860 [2023-01-28 10:53:10,160 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-01-28 10:53:10,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 10:53:10,173 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;@50a833a7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 10:53:10,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 10:53:10,179 INFO L130 PetriNetUnfolder]: 7/36 cut-off events. [2023-01-28 10:53:10,179 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 10:53:10,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:10,179 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] [2023-01-28 10:53:10,180 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)] === [2023-01-28 10:53:10,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:10,183 INFO L85 PathProgramCache]: Analyzing trace with hash 570355702, now seen corresponding path program 1 times [2023-01-28 10:53:10,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:10,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576348912] [2023-01-28 10:53:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:10,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:53:10,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:10,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576348912] [2023-01-28 10:53:10,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576348912] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:10,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:10,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 10:53:10,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605100622] [2023-01-28 10:53:10,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:10,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:53:10,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:10,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:53:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:53:10,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 489 [2023-01-28 10:53:10,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:10,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:10,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 489 [2023-01-28 10:53:10,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:10,889 INFO L130 PetriNetUnfolder]: 1616/2218 cut-off events. [2023-01-28 10:53:10,889 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2023-01-28 10:53:10,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 2218 events. 1616/2218 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8933 event pairs, 271 based on Foata normal form. 1/1347 useless extension candidates. Maximal degree in co-relation 3411. Up to 1413 conditions per place. [2023-01-28 10:53:10,903 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 45 selfloop transitions, 3 changer transitions 1/55 dead transitions. [2023-01-28 10:53:10,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 247 flow [2023-01-28 10:53:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:53:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:53:10,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2023-01-28 10:53:10,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48602590320381733 [2023-01-28 10:53:10,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2023-01-28 10:53:10,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2023-01-28 10:53:10,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:10,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2023-01-28 10:53:10,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:10,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:10,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:10,958 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 98 flow. Second operand 3 states and 713 transitions. [2023-01-28 10:53:10,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 247 flow [2023-01-28 10:53:10,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 55 transitions, 221 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 10:53:10,962 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 101 flow [2023-01-28 10:53:10,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-01-28 10:53:10,966 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-01-28 10:53:10,966 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 101 flow [2023-01-28 10:53:10,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:10,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:10,966 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] [2023-01-28 10:53:10,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 10:53:10,967 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)] === [2023-01-28 10:53:10,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash -775864851, now seen corresponding path program 1 times [2023-01-28 10:53:10,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:10,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838637996] [2023-01-28 10:53:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:10,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:53:11,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:11,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838637996] [2023-01-28 10:53:11,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838637996] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:11,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:11,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 10:53:11,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484159139] [2023-01-28 10:53:11,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:11,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:53:11,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:11,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:53:11,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:53:11,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 489 [2023-01-28 10:53:11,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:11,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:11,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 489 [2023-01-28 10:53:11,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:11,309 INFO L130 PetriNetUnfolder]: 2188/2887 cut-off events. [2023-01-28 10:53:11,310 INFO L131 PetriNetUnfolder]: For 481/481 co-relation queries the response was YES. [2023-01-28 10:53:11,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6429 conditions, 2887 events. 2188/2887 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11758 event pairs, 596 based on Foata normal form. 76/2329 useless extension candidates. Maximal degree in co-relation 2218. Up to 1820 conditions per place. [2023-01-28 10:53:11,320 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 55 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-01-28 10:53:11,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 272 flow [2023-01-28 10:53:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:53:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:53:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-01-28 10:53:11,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4812542603953647 [2023-01-28 10:53:11,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-01-28 10:53:11,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-01-28 10:53:11,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:11,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-01-28 10:53:11,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:11,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:11,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:11,329 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 101 flow. Second operand 3 states and 706 transitions. [2023-01-28 10:53:11,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 272 flow [2023-01-28 10:53:11,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:53:11,332 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 112 flow [2023-01-28 10:53:11,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-01-28 10:53:11,332 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-01-28 10:53:11,332 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 112 flow [2023-01-28 10:53:11,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:11,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:11,333 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] [2023-01-28 10:53:11,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 10:53:11,333 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)] === [2023-01-28 10:53:11,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:11,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2101749660, now seen corresponding path program 1 times [2023-01-28 10:53:11,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:11,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630334479] [2023-01-28 10:53:11,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:11,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:53:11,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:11,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630334479] [2023-01-28 10:53:11,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630334479] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:11,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:11,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 10:53:11,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662388707] [2023-01-28 10:53:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:11,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:53:11,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:53:11,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:53:11,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 489 [2023-01-28 10:53:11,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:11,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:11,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 489 [2023-01-28 10:53:11,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:11,707 INFO L130 PetriNetUnfolder]: 2418/3343 cut-off events. [2023-01-28 10:53:11,707 INFO L131 PetriNetUnfolder]: For 1259/1259 co-relation queries the response was YES. [2023-01-28 10:53:11,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7898 conditions, 3343 events. 2418/3343 cut-off events. For 1259/1259 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15462 event pairs, 747 based on Foata normal form. 100/3124 useless extension candidates. Maximal degree in co-relation 3824. Up to 2227 conditions per place. [2023-01-28 10:53:11,721 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 59 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-01-28 10:53:11,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 306 flow [2023-01-28 10:53:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:53:11,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:53:11,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-01-28 10:53:11,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48261758691206547 [2023-01-28 10:53:11,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-01-28 10:53:11,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-01-28 10:53:11,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:11,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-01-28 10:53:11,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:11,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:11,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:11,727 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 112 flow. Second operand 3 states and 708 transitions. [2023-01-28 10:53:11,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 306 flow [2023-01-28 10:53:11,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:53:11,728 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 124 flow [2023-01-28 10:53:11,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-01-28 10:53:11,729 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-01-28 10:53:11,729 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 124 flow [2023-01-28 10:53:11,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:11,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:11,730 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] [2023-01-28 10:53:11,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 10:53:11,730 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)] === [2023-01-28 10:53:11,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:11,730 INFO L85 PathProgramCache]: Analyzing trace with hash 225964666, now seen corresponding path program 1 times [2023-01-28 10:53:11,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:11,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65480441] [2023-01-28 10:53:11,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:11,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:11,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:11,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65480441] [2023-01-28 10:53:11,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65480441] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:11,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:11,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 10:53:11,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373566795] [2023-01-28 10:53:11,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:11,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:53:11,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:11,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:53:11,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:53:11,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 489 [2023-01-28 10:53:11,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:11,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:11,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 489 [2023-01-28 10:53:11,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:12,110 INFO L130 PetriNetUnfolder]: 2089/3081 cut-off events. [2023-01-28 10:53:12,110 INFO L131 PetriNetUnfolder]: For 1721/1721 co-relation queries the response was YES. [2023-01-28 10:53:12,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7521 conditions, 3081 events. 2089/3081 cut-off events. For 1721/1721 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15920 event pairs, 1506 based on Foata normal form. 74/3085 useless extension candidates. Maximal degree in co-relation 3812. Up to 2239 conditions per place. [2023-01-28 10:53:12,123 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 62 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2023-01-28 10:53:12,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 71 transitions, 336 flow [2023-01-28 10:53:12,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 10:53:12,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 10:53:12,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 808 transitions. [2023-01-28 10:53:12,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130879345603272 [2023-01-28 10:53:12,131 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 808 transitions. [2023-01-28 10:53:12,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 808 transitions. [2023-01-28 10:53:12,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:12,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 808 transitions. [2023-01-28 10:53:12,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:12,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:12,136 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:12,136 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 124 flow. Second operand 4 states and 808 transitions. [2023-01-28 10:53:12,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 71 transitions, 336 flow [2023-01-28 10:53:12,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:53:12,140 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 142 flow [2023-01-28 10:53:12,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-01-28 10:53:12,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2023-01-28 10:53:12,141 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 142 flow [2023-01-28 10:53:12,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:12,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:12,142 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] [2023-01-28 10:53:12,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 10:53:12,142 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)] === [2023-01-28 10:53:12,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:12,143 INFO L85 PathProgramCache]: Analyzing trace with hash -542120705, now seen corresponding path program 1 times [2023-01-28 10:53:12,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:12,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289154470] [2023-01-28 10:53:12,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:12,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:12,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:12,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289154470] [2023-01-28 10:53:12,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289154470] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:12,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:12,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 10:53:12,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516156896] [2023-01-28 10:53:12,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:12,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:53:12,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:12,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:53:12,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:53:12,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 489 [2023-01-28 10:53:12,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:12,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:12,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 489 [2023-01-28 10:53:12,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:12,710 INFO L130 PetriNetUnfolder]: 3315/5119 cut-off events. [2023-01-28 10:53:12,711 INFO L131 PetriNetUnfolder]: For 2789/2789 co-relation queries the response was YES. [2023-01-28 10:53:12,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12116 conditions, 5119 events. 3315/5119 cut-off events. For 2789/2789 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 31151 event pairs, 2550 based on Foata normal form. 280/5300 useless extension candidates. Maximal degree in co-relation 9501. Up to 2950 conditions per place. [2023-01-28 10:53:12,728 INFO L137 encePairwiseOnDemand]: 484/489 looper letters, 86 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2023-01-28 10:53:12,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 97 transitions, 480 flow [2023-01-28 10:53:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:53:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:53:12,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1018 transitions. [2023-01-28 10:53:12,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416359918200409 [2023-01-28 10:53:12,731 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1018 transitions. [2023-01-28 10:53:12,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1018 transitions. [2023-01-28 10:53:12,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:12,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1018 transitions. [2023-01-28 10:53:12,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:12,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:12,737 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:12,737 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 142 flow. Second operand 5 states and 1018 transitions. [2023-01-28 10:53:12,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 97 transitions, 480 flow [2023-01-28 10:53:12,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 97 transitions, 476 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 10:53:12,741 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 171 flow [2023-01-28 10:53:12,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-01-28 10:53:12,742 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-01-28 10:53:12,743 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 171 flow [2023-01-28 10:53:12,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:12,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:12,743 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] [2023-01-28 10:53:12,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 10:53:12,743 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)] === [2023-01-28 10:53:12,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1581329091, now seen corresponding path program 1 times [2023-01-28 10:53:12,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:12,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124512862] [2023-01-28 10:53:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:12,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:53:12,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:12,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124512862] [2023-01-28 10:53:12,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124512862] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:12,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:12,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:53:12,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997534936] [2023-01-28 10:53:12,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:12,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:53:12,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:12,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:53:12,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 10:53:12,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-28 10:53:12,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:12,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:12,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-28 10:53:12,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:14,113 INFO L130 PetriNetUnfolder]: 13213/18670 cut-off events. [2023-01-28 10:53:14,113 INFO L131 PetriNetUnfolder]: For 7229/7229 co-relation queries the response was YES. [2023-01-28 10:53:14,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43154 conditions, 18670 events. 13213/18670 cut-off events. For 7229/7229 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 100772 event pairs, 5320 based on Foata normal form. 248/18916 useless extension candidates. Maximal degree in co-relation 30016. Up to 6719 conditions per place. [2023-01-28 10:53:14,185 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 114 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2023-01-28 10:53:14,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 122 transitions, 639 flow [2023-01-28 10:53:14,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:53:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:53:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1159 transitions. [2023-01-28 10:53:14,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3950238582140423 [2023-01-28 10:53:14,188 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1159 transitions. [2023-01-28 10:53:14,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1159 transitions. [2023-01-28 10:53:14,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:14,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1159 transitions. [2023-01-28 10:53:14,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 193.16666666666666) internal successors, (1159), 6 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:14,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:14,193 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:14,193 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 171 flow. Second operand 6 states and 1159 transitions. [2023-01-28 10:53:14,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 122 transitions, 639 flow [2023-01-28 10:53:14,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 122 transitions, 634 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 10:53:14,199 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 203 flow [2023-01-28 10:53:14,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-01-28 10:53:14,199 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-01-28 10:53:14,200 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 203 flow [2023-01-28 10:53:14,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:14,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:14,200 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] [2023-01-28 10:53:14,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 10:53:14,200 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)] === [2023-01-28 10:53:14,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:14,201 INFO L85 PathProgramCache]: Analyzing trace with hash -547964448, now seen corresponding path program 1 times [2023-01-28 10:53:14,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:14,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284275982] [2023-01-28 10:53:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:14,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:53:14,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:14,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284275982] [2023-01-28 10:53:14,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284275982] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:14,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:14,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:53:14,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485303125] [2023-01-28 10:53:14,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:14,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:53:14,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:53:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 10:53:14,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-28 10:53:14,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:14,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:14,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-28 10:53:14,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:15,464 INFO L130 PetriNetUnfolder]: 11061/15744 cut-off events. [2023-01-28 10:53:15,464 INFO L131 PetriNetUnfolder]: For 7142/7142 co-relation queries the response was YES. [2023-01-28 10:53:15,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37303 conditions, 15744 events. 11061/15744 cut-off events. For 7142/7142 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 84474 event pairs, 5298 based on Foata normal form. 192/15936 useless extension candidates. Maximal degree in co-relation 26486. Up to 7175 conditions per place. [2023-01-28 10:53:15,504 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 66 selfloop transitions, 6 changer transitions 37/109 dead transitions. [2023-01-28 10:53:15,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 581 flow [2023-01-28 10:53:15,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:53:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:53:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1150 transitions. [2023-01-28 10:53:15,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39195637355146556 [2023-01-28 10:53:15,507 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1150 transitions. [2023-01-28 10:53:15,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1150 transitions. [2023-01-28 10:53:15,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:15,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1150 transitions. [2023-01-28 10:53:15,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.66666666666666) internal successors, (1150), 6 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:15,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:15,514 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:15,514 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 203 flow. Second operand 6 states and 1150 transitions. [2023-01-28 10:53:15,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 581 flow [2023-01-28 10:53:15,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 109 transitions, 571 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 10:53:15,522 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 198 flow [2023-01-28 10:53:15,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-01-28 10:53:15,523 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-01-28 10:53:15,523 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 198 flow [2023-01-28 10:53:15,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:15,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:15,524 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] [2023-01-28 10:53:15,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 10:53:15,524 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)] === [2023-01-28 10:53:15,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash -722686443, now seen corresponding path program 1 times [2023-01-28 10:53:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:15,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164627064] [2023-01-28 10:53:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:15,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:53:15,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:15,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164627064] [2023-01-28 10:53:15,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164627064] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:15,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:15,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:53:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468754397] [2023-01-28 10:53:15,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:15,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:53:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:15,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:53:15,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-01-28 10:53:15,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-28 10:53:15,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:15,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:15,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-28 10:53:15,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:16,351 INFO L130 PetriNetUnfolder]: 6113/8458 cut-off events. [2023-01-28 10:53:16,351 INFO L131 PetriNetUnfolder]: For 5467/5467 co-relation queries the response was YES. [2023-01-28 10:53:16,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21650 conditions, 8458 events. 6113/8458 cut-off events. For 5467/5467 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 38808 event pairs, 1120 based on Foata normal form. 496/8954 useless extension candidates. Maximal degree in co-relation 17572. Up to 5246 conditions per place. [2023-01-28 10:53:16,376 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 75 selfloop transitions, 7 changer transitions 1/83 dead transitions. [2023-01-28 10:53:16,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 482 flow [2023-01-28 10:53:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:53:16,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:53:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1122 transitions. [2023-01-28 10:53:16,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824130879345603 [2023-01-28 10:53:16,380 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1122 transitions. [2023-01-28 10:53:16,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1122 transitions. [2023-01-28 10:53:16,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:16,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1122 transitions. [2023-01-28 10:53:16,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:16,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:16,385 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:16,385 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 198 flow. Second operand 6 states and 1122 transitions. [2023-01-28 10:53:16,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 482 flow [2023-01-28 10:53:16,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 456 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-01-28 10:53:16,389 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 194 flow [2023-01-28 10:53:16,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-01-28 10:53:16,390 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-01-28 10:53:16,390 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 194 flow [2023-01-28 10:53:16,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:16,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:16,391 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] [2023-01-28 10:53:16,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 10:53:16,391 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)] === [2023-01-28 10:53:16,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:16,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1709483178, now seen corresponding path program 1 times [2023-01-28 10:53:16,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:16,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216061300] [2023-01-28 10:53:16,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:16,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:53:16,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216061300] [2023-01-28 10:53:16,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216061300] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:16,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:16,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:53:16,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576957393] [2023-01-28 10:53:16,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:16,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:53:16,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:16,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:53:16,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 10:53:16,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 489 [2023-01-28 10:53:16,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:16,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:16,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 489 [2023-01-28 10:53:16,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:17,119 INFO L130 PetriNetUnfolder]: 4654/6363 cut-off events. [2023-01-28 10:53:17,119 INFO L131 PetriNetUnfolder]: For 4918/4918 co-relation queries the response was YES. [2023-01-28 10:53:17,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16805 conditions, 6363 events. 4654/6363 cut-off events. For 4918/4918 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 26901 event pairs, 1274 based on Foata normal form. 432/6795 useless extension candidates. Maximal degree in co-relation 16776. Up to 2526 conditions per place. [2023-01-28 10:53:17,139 INFO L137 encePairwiseOnDemand]: 482/489 looper letters, 89 selfloop transitions, 7 changer transitions 12/108 dead transitions. [2023-01-28 10:53:17,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 108 transitions, 625 flow [2023-01-28 10:53:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 10:53:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 10:53:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1293 transitions. [2023-01-28 10:53:17,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37773882559158634 [2023-01-28 10:53:17,143 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1293 transitions. [2023-01-28 10:53:17,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1293 transitions. [2023-01-28 10:53:17,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:17,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1293 transitions. [2023-01-28 10:53:17,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.71428571428572) internal successors, (1293), 7 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:17,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:17,148 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:17,149 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 194 flow. Second operand 7 states and 1293 transitions. [2023-01-28 10:53:17,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 108 transitions, 625 flow [2023-01-28 10:53:17,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 108 transitions, 580 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-01-28 10:53:17,152 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 193 flow [2023-01-28 10:53:17,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=193, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2023-01-28 10:53:17,153 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-01-28 10:53:17,153 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 193 flow [2023-01-28 10:53:17,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:17,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:17,153 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] [2023-01-28 10:53:17,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 10:53:17,153 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)] === [2023-01-28 10:53:17,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash 390605791, now seen corresponding path program 1 times [2023-01-28 10:53:17,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:17,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595133524] [2023-01-28 10:53:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 10:53:17,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:17,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595133524] [2023-01-28 10:53:17,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595133524] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:53:17,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919452555] [2023-01-28 10:53:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:17,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:53:17,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:53:17,306 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) [2023-01-28 10:53:17,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 10:53:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:17,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 10:53:17,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:53:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:53:17,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:53:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:53:17,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919452555] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 10:53:17,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 10:53:17,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 9 [2023-01-28 10:53:17,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917227258] [2023-01-28 10:53:17,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:17,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:53:17,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:17,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:53:17,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-01-28 10:53:17,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 489 [2023-01-28 10:53:17,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:17,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:17,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 489 [2023-01-28 10:53:17,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:18,146 INFO L130 PetriNetUnfolder]: 3650/4900 cut-off events. [2023-01-28 10:53:18,147 INFO L131 PetriNetUnfolder]: For 4069/4269 co-relation queries the response was YES. [2023-01-28 10:53:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13923 conditions, 4900 events. 3650/4900 cut-off events. For 4069/4269 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 20113 event pairs, 743 based on Foata normal form. 326/5224 useless extension candidates. Maximal degree in co-relation 13893. Up to 1568 conditions per place. [2023-01-28 10:53:18,165 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 94 selfloop transitions, 13 changer transitions 0/109 dead transitions. [2023-01-28 10:53:18,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 607 flow [2023-01-28 10:53:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:53:18,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:53:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1334 transitions. [2023-01-28 10:53:18,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4546693933197001 [2023-01-28 10:53:18,168 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1334 transitions. [2023-01-28 10:53:18,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1334 transitions. [2023-01-28 10:53:18,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:18,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1334 transitions. [2023-01-28 10:53:18,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 6 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) [2023-01-28 10:53:18,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:18,174 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:18,174 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 193 flow. Second operand 6 states and 1334 transitions. [2023-01-28 10:53:18,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 607 flow [2023-01-28 10:53:18,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 109 transitions, 584 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 10:53:18,179 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 262 flow [2023-01-28 10:53:18,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-01-28 10:53:18,179 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-01-28 10:53:18,179 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 262 flow [2023-01-28 10:53:18,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:18,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:18,180 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] [2023-01-28 10:53:18,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 10:53:18,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-28 10:53:18,385 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)] === [2023-01-28 10:53:18,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:18,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1897050288, now seen corresponding path program 1 times [2023-01-28 10:53:18,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:18,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952148293] [2023-01-28 10:53:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:18,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:53:18,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:18,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952148293] [2023-01-28 10:53:18,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952148293] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:53:18,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403154845] [2023-01-28 10:53:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:18,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:53:18,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:53:18,554 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) [2023-01-28 10:53:18,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 10:53:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:18,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 10:53:18,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:53:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:53:18,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 10:53:18,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403154845] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:18,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 10:53:18,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2023-01-28 10:53:18,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882244193] [2023-01-28 10:53:18,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:18,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:53:18,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:18,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:53:18,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 10:53:18,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 489 [2023-01-28 10:53:18,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:18,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:18,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 489 [2023-01-28 10:53:18,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:19,770 INFO L130 PetriNetUnfolder]: 8256/11047 cut-off events. [2023-01-28 10:53:19,771 INFO L131 PetriNetUnfolder]: For 18797/18997 co-relation queries the response was YES. [2023-01-28 10:53:19,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36185 conditions, 11047 events. 8256/11047 cut-off events. For 18797/18997 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 52107 event pairs, 1103 based on Foata normal form. 582/11627 useless extension candidates. Maximal degree in co-relation 36155. Up to 3770 conditions per place. [2023-01-28 10:53:19,829 INFO L137 encePairwiseOnDemand]: 480/489 looper letters, 149 selfloop transitions, 35 changer transitions 0/186 dead transitions. [2023-01-28 10:53:19,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 186 transitions, 1362 flow [2023-01-28 10:53:19,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 10:53:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 10:53:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1780 transitions. [2023-01-28 10:53:19,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4550102249488753 [2023-01-28 10:53:19,833 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1780 transitions. [2023-01-28 10:53:19,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1780 transitions. [2023-01-28 10:53:19,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:19,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1780 transitions. [2023-01-28 10:53:19,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 222.5) internal successors, (1780), 8 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:19,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 489.0) internal successors, (4401), 9 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:19,840 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 489.0) internal successors, (4401), 9 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:19,841 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 262 flow. Second operand 8 states and 1780 transitions. [2023-01-28 10:53:19,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 186 transitions, 1362 flow [2023-01-28 10:53:19,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 186 transitions, 1332 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-28 10:53:19,878 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 641 flow [2023-01-28 10:53:19,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=641, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2023-01-28 10:53:19,879 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2023-01-28 10:53:19,879 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 641 flow [2023-01-28 10:53:19,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:19,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:19,884 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] [2023-01-28 10:53:19,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 10:53:20,088 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,SelfDestructingSolverStorable10 [2023-01-28 10:53:20,088 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)] === [2023-01-28 10:53:20,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:20,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1051748402, now seen corresponding path program 2 times [2023-01-28 10:53:20,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:20,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669344043] [2023-01-28 10:53:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:20,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 10:53:20,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:20,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669344043] [2023-01-28 10:53:20,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669344043] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:20,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:53:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520549582] [2023-01-28 10:53:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:20,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:53:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:53:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 10:53:20,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 489 [2023-01-28 10:53:20,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 641 flow. Second operand has 6 states, 6 states have (on average 176.83333333333334) internal successors, (1061), 6 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:20,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:20,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 489 [2023-01-28 10:53:20,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:21,452 INFO L130 PetriNetUnfolder]: 10548/14117 cut-off events. [2023-01-28 10:53:21,452 INFO L131 PetriNetUnfolder]: For 53594/53594 co-relation queries the response was YES. [2023-01-28 10:53:21,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59839 conditions, 14117 events. 10548/14117 cut-off events. For 53594/53594 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 64251 event pairs, 2245 based on Foata normal form. 368/14484 useless extension candidates. Maximal degree in co-relation 59803. Up to 10817 conditions per place. [2023-01-28 10:53:21,526 INFO L137 encePairwiseOnDemand]: 482/489 looper letters, 160 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2023-01-28 10:53:21,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 168 transitions, 1603 flow [2023-01-28 10:53:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 10:53:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 10:53:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1283 transitions. [2023-01-28 10:53:21,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3748174116272276 [2023-01-28 10:53:21,529 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1283 transitions. [2023-01-28 10:53:21,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1283 transitions. [2023-01-28 10:53:21,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:21,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1283 transitions. [2023-01-28 10:53:21,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.28571428571428) internal successors, (1283), 7 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:21,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:21,534 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:21,534 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 641 flow. Second operand 7 states and 1283 transitions. [2023-01-28 10:53:21,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 168 transitions, 1603 flow [2023-01-28 10:53:21,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 168 transitions, 1598 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 10:53:21,606 INFO L231 Difference]: Finished difference. Result has 79 places, 89 transitions, 686 flow [2023-01-28 10:53:21,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=686, PETRI_PLACES=79, PETRI_TRANSITIONS=89} [2023-01-28 10:53:21,606 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-01-28 10:53:21,606 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 89 transitions, 686 flow [2023-01-28 10:53:21,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.83333333333334) internal successors, (1061), 6 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:21,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:21,607 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] [2023-01-28 10:53:21,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 10:53:21,607 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)] === [2023-01-28 10:53:21,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:21,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1917592064, now seen corresponding path program 1 times [2023-01-28 10:53:21,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:21,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482534336] [2023-01-28 10:53:21,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:21,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:23,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482534336] [2023-01-28 10:53:23,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482534336] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:53:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597966380] [2023-01-28 10:53:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:23,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:53:23,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:53:23,564 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:53:23,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 10:53:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:23,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 101 conjunts are in the unsatisfiable core [2023-01-28 10:53:23,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:53:23,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:23,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:23,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:23,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:23,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:23,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:23,814 INFO L321 Elim1Store]: treesize reduction 88, result has 29.6 percent of original size [2023-01-28 10:53:23,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 54 [2023-01-28 10:53:23,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 10:53:24,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:24,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:24,054 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 10:53:24,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 39 [2023-01-28 10:53:24,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:53:24,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:24,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:24,308 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:53:24,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2023-01-28 10:53:24,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:53:24,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:53:24,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:53:25,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:53:25,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:25,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:25,390 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:53:25,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2023-01-28 10:53:25,866 INFO L321 Elim1Store]: treesize reduction 118, result has 26.7 percent of original size [2023-01-28 10:53:25,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 56 [2023-01-28 10:53:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:25,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:53:37,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:53:37,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 236 treesize of output 176 [2023-01-28 10:53:38,128 INFO L321 Elim1Store]: treesize reduction 76, result has 67.9 percent of original size [2023-01-28 10:53:38,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 137744367586 treesize of output 136553128066 [2023-01-28 10:57:11,009 WARN L222 SmtUtils]: Spent 3.55m on a formula simplification. DAG size of input: 7292 DAG size of output: 1581 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 10:57:15,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:57:15,105 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:57:15,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 241954 treesize of output 228262 [2023-01-28 10:57:19,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:57:19,384 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:57:19,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 228130 treesize of output 226534 [2023-01-28 10:57:23,898 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:57:23,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 202988 treesize of output 158014 [2023-01-28 10:57:28,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:57:28,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:57:28,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 181346 treesize of output 178022 [2023-01-28 10:57:33,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:57:33,312 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:57:33,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 177890 treesize of output 171110 [2023-01-28 10:57:38,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:57:38,304 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:57:38,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 170978 treesize of output 143462 [2023-01-28 10:57:43,406 WARN L222 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 1727 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 10:57:43,407 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 11:04:06,929 WARN L222 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 1389 DAG size of output: 1500 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 11:06:15,635 WARN L222 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 1337 DAG size of output: 1504 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 11:07:07,323 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:07:07,324 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:07:07,366 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 11:07:07,367 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 11:07:07,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 11:07:07,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:07:07,568 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 44ms.. [2023-01-28 11:07:07,569 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 11:07:07,569 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 11:07:07,570 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 11:07:07,570 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 11:07:07,570 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:07:07,572 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 11:07:07,572 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 11:07:07,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 11:07:07 BasicIcfg [2023-01-28 11:07:07,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 11:07:07,574 INFO L158 Benchmark]: Toolchain (without parser) took 846157.50ms. Allocated memory was 362.8MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 332.3MB in the beginning and 810.8MB in the end (delta: -478.4MB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-01-28 11:07:07,574 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 11:07:07,574 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.89ms. Allocated memory is still 362.8MB. Free memory was 332.3MB in the beginning and 319.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 11:07:07,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.87ms. Allocated memory is still 362.8MB. Free memory was 319.4MB in the beginning and 316.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:07:07,574 INFO L158 Benchmark]: Boogie Preprocessor took 36.36ms. Allocated memory is still 362.8MB. Free memory was 316.7MB in the beginning and 314.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:07:07,574 INFO L158 Benchmark]: RCFGBuilder took 651.36ms. Allocated memory is still 362.8MB. Free memory was 314.3MB in the beginning and 330.8MB in the end (delta: -16.5MB). Peak memory consumption was 57.5MB. Max. memory is 16.0GB. [2023-01-28 11:07:07,574 INFO L158 Benchmark]: TraceAbstraction took 845249.16ms. Allocated memory was 362.8MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 329.8MB in the beginning and 810.8MB in the end (delta: -480.9MB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-01-28 11:07:07,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 181.89ms. Allocated memory is still 362.8MB. Free memory was 332.3MB in the beginning and 319.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.87ms. Allocated memory is still 362.8MB. Free memory was 319.4MB in the beginning and 316.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.36ms. Allocated memory is still 362.8MB. Free memory was 316.7MB in the beginning and 314.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 651.36ms. Allocated memory is still 362.8MB. Free memory was 314.3MB in the beginning and 330.8MB in the end (delta: -16.5MB). Peak memory consumption was 57.5MB. Max. memory is 16.0GB. * TraceAbstraction took 845249.16ms. Allocated memory was 362.8MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 329.8MB in the beginning and 810.8MB in the end (delta: -480.9MB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.6s, 226 PlacesBefore, 43 PlacesAfterwards, 235 TransitionsBefore, 37 TransitionsAfterwards, 1824 CoEnabledTransitionPairs, 7 FixpointIterations, 153 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 8 ConcurrentYvCompositions, 15 ChoiceCompositions, 238 TotalNumberOfCompositions, 2860 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2344, independent: 2292, independent conditional: 0, independent unconditional: 2292, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 952, independent: 935, independent conditional: 0, independent unconditional: 935, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2344, independent: 1357, independent conditional: 0, independent unconditional: 1357, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 952, unknown conditional: 0, unknown unconditional: 952] , Statistics on independence cache: Total cache size (in pairs): 134, Positive cache size: 128, Positive conditional cache size: 0, Positive unconditional cache size: 128, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 44ms.. - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 44ms.. - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 44ms.. - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 44ms.. - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 44ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 262 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 845.2s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 662 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 662 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1505 IncrementalHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 22 mSDtfsCounter, 1505 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=686occurred in iteration=12, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 455 NumberOfCodeBlocks, 455 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 475 ConstructedInterpolants, 0 QuantifiedInterpolants, 1530 SizeOfPredicates, 17 NumberOfNonLiveVariables, 834 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 53/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown