/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 19:45:08,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 19:45:08,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 19:45:08,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 19:45:08,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 19:45:08,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 19:45:08,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 19:45:08,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 19:45:08,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 19:45:08,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 19:45:08,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 19:45:08,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 19:45:08,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 19:45:08,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 19:45:08,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 19:45:08,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 19:45:08,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 19:45:08,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 19:45:08,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 19:45:08,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 19:45:08,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 19:45:08,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 19:45:08,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 19:45:08,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 19:45:08,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 19:45:08,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 19:45:08,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 19:45:08,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 19:45:08,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 19:45:08,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 19:45:08,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 19:45:08,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 19:45:08,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 19:45:08,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 19:45:08,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 19:45:08,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 19:45:08,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 19:45:08,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 19:45:08,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 19:45:08,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 19:45:08,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 19:45:08,436 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 19:45:08,460 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 19:45:08,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 19:45:08,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 19:45:08,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 19:45:08,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 19:45:08,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 19:45:08,463 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 19:45:08,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 19:45:08,464 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 19:45:08,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 19:45:08,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 19:45:08,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 19:45:08,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 19:45:08,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 19:45:08,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 19:45:08,465 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 19:45:08,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 19:45:08,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 19:45:08,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 19:45:08,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 19:45:08,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 19:45:08,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 19:45:08,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 19:45:08,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:45:08,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 19:45:08,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 19:45:08,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 19:45:08,466 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 19:45:08,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 19:45:08,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 19:45:08,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 19:45:08,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 19:45:08,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 19:45:08,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 19:45:08,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 19:45:08,761 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 19:45:08,763 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 19:45:08,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c [2022-12-11 19:45:09,719 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 19:45:09,887 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 19:45:09,888 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c [2022-12-11 19:45:09,894 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d8cda8d/5483685e315c42dd9b228adeeecd45d6/FLAG2933cd7f2 [2022-12-11 19:45:09,907 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d8cda8d/5483685e315c42dd9b228adeeecd45d6 [2022-12-11 19:45:09,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 19:45:09,909 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 19:45:09,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 19:45:09,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 19:45:09,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 19:45:09,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:45:09" (1/1) ... [2022-12-11 19:45:09,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d43f9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:09, skipping insertion in model container [2022-12-11 19:45:09,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:45:09" (1/1) ... [2022-12-11 19:45:09,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 19:45:09,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 19:45:10,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:45:10,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:45:10,031 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:45:10,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:45:10,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:45:10,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:45:10,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:45:10,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:45:10,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:45:10,036 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:45:10,041 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c[3424,3437] [2022-12-11 19:45:10,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:45:10,052 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 19:45:10,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:45:10,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:45:10,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:45:10,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:45:10,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:45:10,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:45:10,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:45:10,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:45:10,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:45:10,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:45:10,068 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c[3424,3437] [2022-12-11 19:45:10,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:45:10,078 INFO L208 MainTranslator]: Completed translation [2022-12-11 19:45:10,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10 WrapperNode [2022-12-11 19:45:10,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 19:45:10,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 19:45:10,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 19:45:10,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 19:45:10,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10" (1/1) ... [2022-12-11 19:45:10,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10" (1/1) ... [2022-12-11 19:45:10,111 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 245 [2022-12-11 19:45:10,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 19:45:10,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 19:45:10,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 19:45:10,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 19:45:10,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10" (1/1) ... [2022-12-11 19:45:10,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10" (1/1) ... [2022-12-11 19:45:10,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10" (1/1) ... [2022-12-11 19:45:10,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10" (1/1) ... [2022-12-11 19:45:10,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10" (1/1) ... [2022-12-11 19:45:10,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10" (1/1) ... [2022-12-11 19:45:10,134 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10" (1/1) ... [2022-12-11 19:45:10,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10" (1/1) ... [2022-12-11 19:45:10,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 19:45:10,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 19:45:10,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 19:45:10,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 19:45:10,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10" (1/1) ... [2022-12-11 19:45:10,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:45:10,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:45:10,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 19:45:10,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 19:45:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 19:45:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 19:45:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 19:45:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 19:45:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 19:45:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 19:45:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 19:45:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 19:45:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-11 19:45:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-11 19:45:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 19:45:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 19:45:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 19:45:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 19:45:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 19:45:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 19:45:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 19:45:10,204 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 19:45:10,302 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 19:45:10,304 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 19:45:10,566 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 19:45:10,660 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 19:45:10,660 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-11 19:45:10,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:45:10 BoogieIcfgContainer [2022-12-11 19:45:10,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 19:45:10,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 19:45:10,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 19:45:10,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 19:45:10,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 07:45:09" (1/3) ... [2022-12-11 19:45:10,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7326a4cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:45:10, skipping insertion in model container [2022-12-11 19:45:10,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:45:10" (2/3) ... [2022-12-11 19:45:10,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7326a4cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:45:10, skipping insertion in model container [2022-12-11 19:45:10,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:45:10" (3/3) ... [2022-12-11 19:45:10,668 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2022-12-11 19:45:10,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 19:45:10,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 19:45:10,681 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 19:45:10,759 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-11 19:45:10,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 194 transitions, 412 flow [2022-12-11 19:45:10,869 INFO L130 PetriNetUnfolder]: 18/191 cut-off events. [2022-12-11 19:45:10,870 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 19:45:10,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 191 events. 18/191 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 111 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 155. Up to 3 conditions per place. [2022-12-11 19:45:10,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 194 transitions, 412 flow [2022-12-11 19:45:10,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 181 transitions, 380 flow [2022-12-11 19:45:10,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 19:45:10,902 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;@6a8237d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 19:45:10,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 19:45:10,947 INFO L130 PetriNetUnfolder]: 18/180 cut-off events. [2022-12-11 19:45:10,947 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 19:45:10,948 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:45:10,949 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:45:10,949 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 1 more)] === [2022-12-11 19:45:10,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:45:10,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1272589224, now seen corresponding path program 1 times [2022-12-11 19:45:10,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:45:10,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131196358] [2022-12-11 19:45:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:45:10,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:45:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:45:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:45:11,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:45:11,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131196358] [2022-12-11 19:45:11,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131196358] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:45:11,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:45:11,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-11 19:45:11,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554651487] [2022-12-11 19:45:11,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:45:11,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-11 19:45:11,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:45:11,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-11 19:45:11,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-11 19:45:11,249 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 194 [2022-12-11 19:45:11,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 181 transitions, 380 flow. Second operand has 2 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:45:11,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:45:11,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 194 [2022-12-11 19:45:11,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:45:11,349 INFO L130 PetriNetUnfolder]: 71/354 cut-off events. [2022-12-11 19:45:11,350 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-11 19:45:11,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 354 events. 71/354 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1024 event pairs, 38 based on Foata normal form. 60/377 useless extension candidates. Maximal degree in co-relation 331. Up to 106 conditions per place. [2022-12-11 19:45:11,356 INFO L137 encePairwiseOnDemand]: 181/194 looper letters, 11 selfloop transitions, 0 changer transitions 6/168 dead transitions. [2022-12-11 19:45:11,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 168 transitions, 376 flow [2022-12-11 19:45:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-11 19:45:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-11 19:45:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 362 transitions. [2022-12-11 19:45:11,366 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9329896907216495 [2022-12-11 19:45:11,367 INFO L175 Difference]: Start difference. First operand has 173 places, 181 transitions, 380 flow. Second operand 2 states and 362 transitions. [2022-12-11 19:45:11,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 168 transitions, 376 flow [2022-12-11 19:45:11,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 168 transitions, 364 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-11 19:45:11,372 INFO L231 Difference]: Finished difference. Result has 168 places, 162 transitions, 330 flow [2022-12-11 19:45:11,373 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=330, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2022-12-11 19:45:11,375 INFO L295 CegarLoopForPetriNet]: 173 programPoint places, -5 predicate places. [2022-12-11 19:45:11,375 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 330 flow [2022-12-11 19:45:11,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:45:11,376 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:45:11,376 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:45:11,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 19:45:11,376 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 1 more)] === [2022-12-11 19:45:11,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:45:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1759950902, now seen corresponding path program 1 times [2022-12-11 19:45:11,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:45:11,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721286883] [2022-12-11 19:45:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:45:11,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:45:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:45:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:45:11,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:45:11,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721286883] [2022-12-11 19:45:11,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721286883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:45:11,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:45:11,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:45:11,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334571404] [2022-12-11 19:45:11,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:45:11,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:45:11,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:45:11,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:45:11,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:45:11,732 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 194 [2022-12-11 19:45:11,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:45:11,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:45:11,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 194 [2022-12-11 19:45:11,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:45:11,873 INFO L130 PetriNetUnfolder]: 73/430 cut-off events. [2022-12-11 19:45:11,873 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-11 19:45:11,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 430 events. 73/430 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1265 event pairs, 38 based on Foata normal form. 11/406 useless extension candidates. Maximal degree in co-relation 598. Up to 118 conditions per place. [2022-12-11 19:45:11,876 INFO L137 encePairwiseOnDemand]: 182/194 looper letters, 33 selfloop transitions, 8 changer transitions 17/183 dead transitions. [2022-12-11 19:45:11,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 183 transitions, 491 flow [2022-12-11 19:45:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 19:45:11,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 19:45:11,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1348 transitions. [2022-12-11 19:45:11,882 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7720504009163803 [2022-12-11 19:45:11,882 INFO L175 Difference]: Start difference. First operand has 168 places, 162 transitions, 330 flow. Second operand 9 states and 1348 transitions. [2022-12-11 19:45:11,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 183 transitions, 491 flow [2022-12-11 19:45:11,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 183 transitions, 491 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 19:45:11,887 INFO L231 Difference]: Finished difference. Result has 172 places, 163 transitions, 362 flow [2022-12-11 19:45:11,888 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=362, PETRI_PLACES=172, PETRI_TRANSITIONS=163} [2022-12-11 19:45:11,888 INFO L295 CegarLoopForPetriNet]: 173 programPoint places, -1 predicate places. [2022-12-11 19:45:11,888 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 163 transitions, 362 flow [2022-12-11 19:45:11,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:45:11,889 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:45:11,889 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:45:11,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 19:45:11,890 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 1 more)] === [2022-12-11 19:45:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:45:11,891 INFO L85 PathProgramCache]: Analyzing trace with hash 162444124, now seen corresponding path program 1 times [2022-12-11 19:45:11,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:45:11,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346948098] [2022-12-11 19:45:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:45:11,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:45:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:45:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:45:12,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:45:12,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346948098] [2022-12-11 19:45:12,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346948098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:45:12,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:45:12,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:45:12,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72310885] [2022-12-11 19:45:12,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:45:12,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:45:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:45:12,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:45:12,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:45:12,092 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 194 [2022-12-11 19:45:12,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 163 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:45:12,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:45:12,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 194 [2022-12-11 19:45:12,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:45:12,224 INFO L130 PetriNetUnfolder]: 92/460 cut-off events. [2022-12-11 19:45:12,224 INFO L131 PetriNetUnfolder]: For 83/95 co-relation queries the response was YES. [2022-12-11 19:45:12,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 460 events. 92/460 cut-off events. For 83/95 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1565 event pairs, 50 based on Foata normal form. 15/433 useless extension candidates. Maximal degree in co-relation 756. Up to 115 conditions per place. [2022-12-11 19:45:12,226 INFO L137 encePairwiseOnDemand]: 185/194 looper letters, 36 selfloop transitions, 6 changer transitions 8/175 dead transitions. [2022-12-11 19:45:12,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 175 transitions, 496 flow [2022-12-11 19:45:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:45:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:45:12,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1052 transitions. [2022-12-11 19:45:12,230 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7746686303387335 [2022-12-11 19:45:12,230 INFO L175 Difference]: Start difference. First operand has 172 places, 163 transitions, 362 flow. Second operand 7 states and 1052 transitions. [2022-12-11 19:45:12,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 175 transitions, 496 flow [2022-12-11 19:45:12,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 175 transitions, 482 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-11 19:45:12,235 INFO L231 Difference]: Finished difference. Result has 173 places, 164 transitions, 372 flow [2022-12-11 19:45:12,235 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=372, PETRI_PLACES=173, PETRI_TRANSITIONS=164} [2022-12-11 19:45:12,236 INFO L295 CegarLoopForPetriNet]: 173 programPoint places, 0 predicate places. [2022-12-11 19:45:12,236 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 164 transitions, 372 flow [2022-12-11 19:45:12,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:45:12,237 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:45:12,237 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:45:12,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 19:45:12,237 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 1 more)] === [2022-12-11 19:45:12,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:45:12,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1557577042, now seen corresponding path program 1 times [2022-12-11 19:45:12,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:45:12,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534233382] [2022-12-11 19:45:12,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:45:12,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:45:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:45:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:45:12,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:45:12,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534233382] [2022-12-11 19:45:12,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534233382] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:45:12,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:45:12,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:45:12,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633442149] [2022-12-11 19:45:12,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:45:12,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:45:12,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:45:12,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:45:12,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:45:12,456 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 194 [2022-12-11 19:45:12,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 164 transitions, 372 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:45:12,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:45:12,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 194 [2022-12-11 19:45:12,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:45:12,510 INFO L130 PetriNetUnfolder]: 82/389 cut-off events. [2022-12-11 19:45:12,510 INFO L131 PetriNetUnfolder]: For 84/88 co-relation queries the response was YES. [2022-12-11 19:45:12,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 389 events. 82/389 cut-off events. For 84/88 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1109 event pairs, 23 based on Foata normal form. 8/374 useless extension candidates. Maximal degree in co-relation 628. Up to 82 conditions per place. [2022-12-11 19:45:12,513 INFO L137 encePairwiseOnDemand]: 191/194 looper letters, 19 selfloop transitions, 2 changer transitions 0/170 dead transitions. [2022-12-11 19:45:12,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 436 flow [2022-12-11 19:45:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:45:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:45:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-12-11 19:45:12,514 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8883161512027491 [2022-12-11 19:45:12,514 INFO L175 Difference]: Start difference. First operand has 173 places, 164 transitions, 372 flow. Second operand 3 states and 517 transitions. [2022-12-11 19:45:12,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 436 flow [2022-12-11 19:45:12,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 170 transitions, 426 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-11 19:45:12,517 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 376 flow [2022-12-11 19:45:12,517 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2022-12-11 19:45:12,518 INFO L295 CegarLoopForPetriNet]: 173 programPoint places, -2 predicate places. [2022-12-11 19:45:12,518 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 376 flow [2022-12-11 19:45:12,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:45:12,519 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:45:12,519 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:45:12,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 19:45:12,519 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 1 more)] === [2022-12-11 19:45:12,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:45:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2062706870, now seen corresponding path program 2 times [2022-12-11 19:45:12,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:45:12,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875021155] [2022-12-11 19:45:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:45:12,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:45:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:45:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:45:12,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:45:12,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875021155] [2022-12-11 19:45:12,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875021155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:45:12,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:45:12,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:45:12,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352929411] [2022-12-11 19:45:12,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:45:12,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:45:12,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:45:12,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:45:12,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:45:12,729 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 194 [2022-12-11 19:45:12,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:45:12,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:45:12,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 194 [2022-12-11 19:45:12,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:45:12,787 INFO L130 PetriNetUnfolder]: 58/341 cut-off events. [2022-12-11 19:45:12,787 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2022-12-11 19:45:12,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 341 events. 58/341 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 830 event pairs, 15 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 558. Up to 91 conditions per place. [2022-12-11 19:45:12,788 INFO L137 encePairwiseOnDemand]: 190/194 looper letters, 17 selfloop transitions, 3 changer transitions 0/169 dead transitions. [2022-12-11 19:45:12,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 169 transitions, 430 flow [2022-12-11 19:45:12,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:45:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:45:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2022-12-11 19:45:12,790 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8848797250859106 [2022-12-11 19:45:12,790 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 376 flow. Second operand 3 states and 515 transitions. [2022-12-11 19:45:12,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 169 transitions, 430 flow [2022-12-11 19:45:12,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 169 transitions, 422 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-11 19:45:12,793 INFO L231 Difference]: Finished difference. Result has 172 places, 167 transitions, 391 flow [2022-12-11 19:45:12,793 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=172, PETRI_TRANSITIONS=167} [2022-12-11 19:45:12,795 INFO L295 CegarLoopForPetriNet]: 173 programPoint places, -1 predicate places. [2022-12-11 19:45:12,795 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 167 transitions, 391 flow [2022-12-11 19:45:12,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:45:12,795 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:45:12,795 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:45:12,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 19:45:12,796 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 1 more)] === [2022-12-11 19:45:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:45:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1340588176, now seen corresponding path program 3 times [2022-12-11 19:45:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:45:12,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819724820] [2022-12-11 19:45:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:45:12,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:45:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:45:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:45:17,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:45:17,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819724820] [2022-12-11 19:45:17,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819724820] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:45:17,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347268336] [2022-12-11 19:45:17,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 19:45:17,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:45:17,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:45:17,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:45:17,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 19:45:17,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-11 19:45:17,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:45:17,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-11 19:45:17,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:45:18,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 [2022-12-11 19:45:18,497 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-11 19:45:18,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-11 19:45:19,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:45:19,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-11 19:45:19,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-11 19:45:20,100 INFO L321 Elim1Store]: treesize reduction 3, result has 85.0 percent of original size [2022-12-11 19:45:20,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 32 [2022-12-11 19:45:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:45:20,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 19:45:20,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347268336] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:45:20,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 19:45:20,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [44] total 61 [2022-12-11 19:45:20,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387578483] [2022-12-11 19:45:20,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:45:20,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-11 19:45:20,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:45:20,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-11 19:45:20,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=3348, Unknown=0, NotChecked=0, Total=3660 [2022-12-11 19:45:20,226 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 194 [2022-12-11 19:45:20,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 167 transitions, 391 flow. Second operand has 23 states, 23 states have (on average 82.78260869565217) internal successors, (1904), 23 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:45:20,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:45:20,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 194 [2022-12-11 19:45:20,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:45:22,594 INFO L130 PetriNetUnfolder]: 1114/2331 cut-off events. [2022-12-11 19:45:22,594 INFO L131 PetriNetUnfolder]: For 1178/1250 co-relation queries the response was YES. [2022-12-11 19:45:22,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5085 conditions, 2331 events. 1114/2331 cut-off events. For 1178/1250 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14266 event pairs, 145 based on Foata normal form. 1/2118 useless extension candidates. Maximal degree in co-relation 5076. Up to 664 conditions per place. [2022-12-11 19:45:22,606 INFO L137 encePairwiseOnDemand]: 163/194 looper letters, 158 selfloop transitions, 33 changer transitions 4/269 dead transitions. [2022-12-11 19:45:22,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 269 transitions, 1060 flow [2022-12-11 19:45:22,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-11 19:45:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-11 19:45:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2250 transitions. [2022-12-11 19:45:22,610 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.44607454401268837 [2022-12-11 19:45:22,610 INFO L175 Difference]: Start difference. First operand has 172 places, 167 transitions, 391 flow. Second operand 26 states and 2250 transitions. [2022-12-11 19:45:22,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 269 transitions, 1060 flow [2022-12-11 19:45:22,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 269 transitions, 1057 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:45:22,615 INFO L231 Difference]: Finished difference. Result has 202 places, 181 transitions, 527 flow [2022-12-11 19:45:22,615 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=527, PETRI_PLACES=202, PETRI_TRANSITIONS=181} [2022-12-11 19:45:22,616 INFO L295 CegarLoopForPetriNet]: 173 programPoint places, 29 predicate places. [2022-12-11 19:45:22,616 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 181 transitions, 527 flow [2022-12-11 19:45:22,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 82.78260869565217) internal successors, (1904), 23 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:45:22,617 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:45:22,617 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:45:22,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 19:45:22,821 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,SelfDestructingSolverStorable5 [2022-12-11 19:45:22,822 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 1 more)] === [2022-12-11 19:45:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:45:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash -383912264, now seen corresponding path program 4 times [2022-12-11 19:45:22,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:45:22,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713084507] [2022-12-11 19:45:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:45:22,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:45:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:45:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:45:25,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:45:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713084507] [2022-12-11 19:45:25,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713084507] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:45:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365347496] [2022-12-11 19:45:25,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 19:45:25,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:45:25,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:45:25,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:45:25,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 19:45:25,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 19:45:25,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:45:25,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 82 conjunts are in the unsatisfiable core [2022-12-11 19:45:25,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:45:27,998 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 15 treesize of output 11 [2022-12-11 19:45:28,907 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 [2022-12-11 19:45:29,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:45:29,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-11 19:45:29,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:45:29,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-12-11 19:45:29,964 INFO L321 Elim1Store]: treesize reduction 3, result has 85.0 percent of original size [2022-12-11 19:45:29,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 32 [2022-12-11 19:45:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:45:30,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:45:32,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:45:32,196 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 186 treesize of output 126 [2022-12-11 19:45:32,251 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:45:32,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32596 treesize of output 29608 [2022-12-11 19:45:32,335 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:45:32,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29420 treesize of output 26360 [2022-12-11 19:45:32,447 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:45:32,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26412 treesize of output 21836 [2022-12-11 19:45:32,551 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:45:32,552 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 21816 treesize of output 19588 Received shutdown request... [2022-12-11 19:58:41,946 WARN L249 SmtUtils]: Removed 1 from assertion stack [2022-12-11 19:58:41,949 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-11 19:58:41,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 19:58:41,980 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 [2022-12-11 19:58:41,980 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 19:58:42,151 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,SelfDestructingSolverStorable6 [2022-12-11 19:58:42,151 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 156 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2022-12-11 19:58:42,153 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-11 19:58:42,153 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-11 19:58:42,153 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-11 19:58:42,154 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-12-11 19:58:42,156 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 19:58:42,156 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 19:58:42,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 07:58:42 BasicIcfg [2022-12-11 19:58:42,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 19:58:42,159 INFO L158 Benchmark]: Toolchain (without parser) took 812249.79ms. Allocated memory was 196.1MB in the beginning and 788.5MB in the end (delta: 592.4MB). Free memory was 171.9MB in the beginning and 426.3MB in the end (delta: -254.5MB). Peak memory consumption was 490.4MB. Max. memory is 8.0GB. [2022-12-11 19:58:42,159 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 196.1MB. Free memory is still 172.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 19:58:42,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.12ms. Allocated memory is still 196.1MB. Free memory was 171.9MB in the beginning and 158.5MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-11 19:58:42,160 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.40ms. Allocated memory is still 196.1MB. Free memory was 158.5MB in the beginning and 156.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 19:58:42,160 INFO L158 Benchmark]: Boogie Preprocessor took 24.42ms. Allocated memory is still 196.1MB. Free memory was 156.0MB in the beginning and 154.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 19:58:42,160 INFO L158 Benchmark]: RCFGBuilder took 524.76ms. Allocated memory is still 196.1MB. Free memory was 154.4MB in the beginning and 121.4MB in the end (delta: 33.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-12-11 19:58:42,160 INFO L158 Benchmark]: TraceAbstraction took 811495.02ms. Allocated memory was 196.1MB in the beginning and 788.5MB in the end (delta: 592.4MB). Free memory was 120.3MB in the beginning and 426.3MB in the end (delta: -306.0MB). Peak memory consumption was 439.0MB. Max. memory is 8.0GB. [2022-12-11 19:58:42,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 196.1MB. Free memory is still 172.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 169.12ms. Allocated memory is still 196.1MB. Free memory was 171.9MB in the beginning and 158.5MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.40ms. Allocated memory is still 196.1MB. Free memory was 158.5MB in the beginning and 156.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.42ms. Allocated memory is still 196.1MB. Free memory was 156.0MB in the beginning and 154.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 524.76ms. Allocated memory is still 196.1MB. Free memory was 154.4MB in the beginning and 121.4MB in the end (delta: 33.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 811495.02ms. Allocated memory was 196.1MB in the beginning and 788.5MB in the end (delta: 592.4MB). Free memory was 120.3MB in the beginning and 426.3MB in the end (delta: -306.0MB). Peak memory consumption was 439.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 156 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 120]: 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 156 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 119]: 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 156 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 121]: 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 156 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 207 locations, 4 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: 811.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 373 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 373 mSDsluCounter, 992 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 869 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1498 IncrementalHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 123 mSDtfsCounter, 1498 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 243 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=527occurred in iteration=6, InterpolantAutomatonStates: 50, 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, 8.0s InterpolantComputationTime, 1043 NumberOfCodeBlocks, 1029 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1036 ConstructedInterpolants, 11 QuantifiedInterpolants, 14725 SizeOfPredicates, 22 NumberOfNonLiveVariables, 369 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 7/9 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