/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:28:40,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:28:40,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:28:40,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:28:40,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:28:40,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:28:40,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:28:40,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:28:40,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:28:40,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:28:40,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:28:40,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:28:40,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:28:40,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:28:40,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:28:40,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:28:40,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:28:40,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:28:40,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:28:40,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:28:40,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:28:40,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:28:40,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:28:40,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:28:40,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 19:28:40,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 19:28:40,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 19:28:40,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 19:28:40,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 19:28:40,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 19:28:40,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 19:28:40,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 19:28:40,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 19:28:40,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:28:40,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:28:40,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:28:40,857 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 19:28:40,886 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:28:40,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:28:40,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:28:40,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:28:40,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:28:40,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:28:40,889 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:28:40,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:28:40,889 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:28:40,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:28:40,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:28:40,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:28:40,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:28:40,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:28:40,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:28:40,890 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:28:40,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:28:40,890 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:28:40,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:28:40,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:28:40,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:28:40,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:28:40,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:28:40,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:28:40,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:28:40,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:28:40,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:28:40,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:28:40,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:28:40,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:28:40,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:28:40,892 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:28:41,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:28:41,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:28:41,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:28:41,139 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:28:41,140 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:28:41,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-01-27 19:28:42,264 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:28:42,540 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:28:42,540 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-01-27 19:28:42,568 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f55b9eaa9/efd5832b89de4eeaad047080da1cf0e6/FLAG931f1d9d2 [2023-01-27 19:28:42,587 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f55b9eaa9/efd5832b89de4eeaad047080da1cf0e6 [2023-01-27 19:28:42,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:28:42,591 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:28:42,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:28:42,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:28:42,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:28:42,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:28:42" (1/1) ... [2023-01-27 19:28:42,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee18bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:42, skipping insertion in model container [2023-01-27 19:28:42,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:28:42" (1/1) ... [2023-01-27 19:28:42,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:28:42,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:28:42,970 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2023-01-27 19:28:43,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:28:43,109 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:28:43,151 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2023-01-27 19:28:43,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:28:43,229 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:28:43,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43 WrapperNode [2023-01-27 19:28:43,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:28:43,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:28:43,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:28:43,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:28:43,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43" (1/1) ... [2023-01-27 19:28:43,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43" (1/1) ... [2023-01-27 19:28:43,299 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 232 [2023-01-27 19:28:43,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:28:43,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:28:43,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:28:43,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:28:43,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43" (1/1) ... [2023-01-27 19:28:43,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43" (1/1) ... [2023-01-27 19:28:43,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43" (1/1) ... [2023-01-27 19:28:43,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43" (1/1) ... [2023-01-27 19:28:43,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43" (1/1) ... [2023-01-27 19:28:43,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43" (1/1) ... [2023-01-27 19:28:43,351 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43" (1/1) ... [2023-01-27 19:28:43,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43" (1/1) ... [2023-01-27 19:28:43,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:28:43,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:28:43,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:28:43,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:28:43,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43" (1/1) ... [2023-01-27 19:28:43,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:28:43,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:28:43,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 19:28:43,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 19:28:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:28:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-27 19:28:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-27 19:28:43,422 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-27 19:28:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:28:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:28:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-27 19:28:43,422 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-27 19:28:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:28:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 19:28:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 19:28:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:28:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-27 19:28:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:28:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:28:43,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:28:43,429 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:28:43,556 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:28:43,558 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:28:43,955 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:28:43,964 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:28:43,964 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-01-27 19:28:43,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:28:43 BoogieIcfgContainer [2023-01-27 19:28:43,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:28:43,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:28:43,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:28:43,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:28:43,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:28:42" (1/3) ... [2023-01-27 19:28:43,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1f5974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:28:43, skipping insertion in model container [2023-01-27 19:28:43,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:28:43" (2/3) ... [2023-01-27 19:28:43,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1f5974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:28:43, skipping insertion in model container [2023-01-27 19:28:43,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:28:43" (3/3) ... [2023-01-27 19:28:43,973 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-01-27 19:28:43,988 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:28:43,988 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 19:28:43,988 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:28:44,087 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-27 19:28:44,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 233 transitions, 488 flow [2023-01-27 19:28:44,272 INFO L130 PetriNetUnfolder]: 54/435 cut-off events. [2023-01-27 19:28:44,272 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-01-27 19:28:44,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 435 events. 54/435 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1721 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2023-01-27 19:28:44,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 233 transitions, 488 flow [2023-01-27 19:28:44,302 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 231 transitions, 478 flow [2023-01-27 19:28:44,305 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:28:44,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 231 transitions, 478 flow [2023-01-27 19:28:44,315 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 231 transitions, 478 flow [2023-01-27 19:28:44,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 231 transitions, 478 flow [2023-01-27 19:28:44,373 INFO L130 PetriNetUnfolder]: 50/423 cut-off events. [2023-01-27 19:28:44,374 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2023-01-27 19:28:44,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 423 events. 50/423 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1639 event pairs, 0 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2023-01-27 19:28:44,385 INFO L119 LiptonReduction]: Number of co-enabled transitions 15880 [2023-01-27 19:28:49,427 INFO L134 LiptonReduction]: Checked pairs total: 24331 [2023-01-27 19:28:49,428 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-01-27 19:28:49,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:28:49,444 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;@316802da, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:28:49,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 19:28:49,448 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2023-01-27 19:28:49,448 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:28:49,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:28:49,450 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-01-27 19:28:49,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:28:49,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:28:49,454 INFO L85 PathProgramCache]: Analyzing trace with hash -438899358, now seen corresponding path program 1 times [2023-01-27 19:28:49,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:28:49,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349800170] [2023-01-27 19:28:49,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:28:49,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:28:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:28:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:28:49,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:28:49,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349800170] [2023-01-27 19:28:49,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349800170] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:28:49,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:28:49,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 19:28:49,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722511656] [2023-01-27 19:28:49,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:28:49,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:28:49,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:28:49,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:28:49,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:28:49,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-27 19:28:49,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:49,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:28:49,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-27 19:28:49,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:28:50,315 INFO L130 PetriNetUnfolder]: 3305/5516 cut-off events. [2023-01-27 19:28:50,315 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2023-01-27 19:28:50,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10754 conditions, 5516 events. 3305/5516 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 30891 event pairs, 3078 based on Foata normal form. 276/4857 useless extension candidates. Maximal degree in co-relation 9713. Up to 5166 conditions per place. [2023-01-27 19:28:50,338 INFO L137 encePairwiseOnDemand]: 403/417 looper letters, 47 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-01-27 19:28:50,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 224 flow [2023-01-27 19:28:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:28:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:28:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2023-01-27 19:28:50,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530775379696243 [2023-01-27 19:28:50,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2023-01-27 19:28:50,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2023-01-27 19:28:50,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:28:50,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2023-01-27 19:28:50,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:50,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:50,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:50,367 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 146 flow. Second operand 3 states and 664 transitions. [2023-01-27 19:28:50,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 224 flow [2023-01-27 19:28:50,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 19:28:50,374 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 136 flow [2023-01-27 19:28:50,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-01-27 19:28:50,379 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-01-27 19:28:50,379 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 136 flow [2023-01-27 19:28:50,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:50,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:28:50,380 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-01-27 19:28:50,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:28:50,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:28:50,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:28:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1830623665, now seen corresponding path program 1 times [2023-01-27 19:28:50,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:28:50,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013595401] [2023-01-27 19:28:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:28:50,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:28:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:28:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:28:50,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:28:50,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013595401] [2023-01-27 19:28:50,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013595401] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:28:50,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448190465] [2023-01-27 19:28:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:28:50,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:28:50,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:28:50,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:28:50,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 19:28:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:28:50,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 19:28:50,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:28:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:28:50,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:28:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:28:50,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448190465] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:28:50,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:28:50,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-27 19:28:50,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615869870] [2023-01-27 19:28:50,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:28:50,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 19:28:50,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:28:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 19:28:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 19:28:50,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-27 19:28:50,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 202.57142857142858) internal successors, (1418), 7 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:50,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:28:50,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-27 19:28:50,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:28:51,320 INFO L130 PetriNetUnfolder]: 3305/5519 cut-off events. [2023-01-27 19:28:51,320 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2023-01-27 19:28:51,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10770 conditions, 5519 events. 3305/5519 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 30887 event pairs, 3078 based on Foata normal form. 0/4584 useless extension candidates. Maximal degree in co-relation 10757. Up to 5166 conditions per place. [2023-01-27 19:28:51,342 INFO L137 encePairwiseOnDemand]: 414/417 looper letters, 47 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-01-27 19:28:51,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 252 flow [2023-01-27 19:28:51,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:28:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:28:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1261 transitions. [2023-01-27 19:28:51,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5039968025579536 [2023-01-27 19:28:51,347 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1261 transitions. [2023-01-27 19:28:51,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1261 transitions. [2023-01-27 19:28:51,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:28:51,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1261 transitions. [2023-01-27 19:28:51,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.16666666666666) internal successors, (1261), 6 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:51,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:51,356 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:51,356 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 136 flow. Second operand 6 states and 1261 transitions. [2023-01-27 19:28:51,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 252 flow [2023-01-27 19:28:51,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 248 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 19:28:51,360 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 168 flow [2023-01-27 19:28:51,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-01-27 19:28:51,360 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2023-01-27 19:28:51,361 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 168 flow [2023-01-27 19:28:51,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.57142857142858) internal successors, (1418), 7 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:51,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:28:51,362 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-01-27 19:28:51,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 19:28:51,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:28:51,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:28:51,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:28:51,569 INFO L85 PathProgramCache]: Analyzing trace with hash -981188446, now seen corresponding path program 2 times [2023-01-27 19:28:51,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:28:51,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047659867] [2023-01-27 19:28:51,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:28:51,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:28:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:28:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:28:51,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:28:51,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047659867] [2023-01-27 19:28:51,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047659867] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:28:51,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830694717] [2023-01-27 19:28:51,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:28:51,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:28:51,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:28:51,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:28:51,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 19:28:51,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 19:28:51,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:28:52,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 19:28:52,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:28:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:28:52,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:28:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:28:52,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830694717] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:28:52,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:28:52,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-27 19:28:52,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039742138] [2023-01-27 19:28:52,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:28:52,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 19:28:52,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:28:52,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 19:28:52,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-01-27 19:28:52,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-27 19:28:52,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 168 flow. Second operand has 13 states, 13 states have (on average 202.30769230769232) internal successors, (2630), 13 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:52,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:28:52,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-27 19:28:52,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:28:52,693 INFO L130 PetriNetUnfolder]: 3305/5525 cut-off events. [2023-01-27 19:28:52,693 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-01-27 19:28:52,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10807 conditions, 5525 events. 3305/5525 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 30908 event pairs, 3078 based on Foata normal form. 6/4597 useless extension candidates. Maximal degree in co-relation 10748. Up to 5166 conditions per place. [2023-01-27 19:28:52,715 INFO L137 encePairwiseOnDemand]: 414/417 looper letters, 47 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2023-01-27 19:28:52,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 320 flow [2023-01-27 19:28:52,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 19:28:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 19:28:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2476 transitions. [2023-01-27 19:28:52,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49480415667466027 [2023-01-27 19:28:52,722 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2476 transitions. [2023-01-27 19:28:52,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2476 transitions. [2023-01-27 19:28:52,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:28:52,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2476 transitions. [2023-01-27 19:28:52,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 206.33333333333334) internal successors, (2476), 12 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:52,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 417.0) internal successors, (5421), 13 states have internal predecessors, (5421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:52,739 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 417.0) internal successors, (5421), 13 states have internal predecessors, (5421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:52,739 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 168 flow. Second operand 12 states and 2476 transitions. [2023-01-27 19:28:52,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 320 flow [2023-01-27 19:28:52,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 306 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-27 19:28:52,745 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 238 flow [2023-01-27 19:28:52,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=238, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2023-01-27 19:28:52,746 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2023-01-27 19:28:52,746 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 238 flow [2023-01-27 19:28:52,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 202.30769230769232) internal successors, (2630), 13 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:28:52,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:28:52,749 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-01-27 19:28:52,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 19:28:52,955 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,SelfDestructingSolverStorable2 [2023-01-27 19:28:52,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:28:52,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:28:52,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1179815550, now seen corresponding path program 3 times [2023-01-27 19:28:52,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:28:52,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808022524] [2023-01-27 19:28:52,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:28:52,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:28:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:28:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:28:53,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:28:53,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808022524] [2023-01-27 19:28:53,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808022524] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:28:53,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451948594] [2023-01-27 19:28:53,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 19:28:53,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:28:53,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:28:53,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:28:53,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 19:34:19,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-01-27 19:34:19,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:34:19,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 19:34:19,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:34:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:34:19,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:34:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:34:19,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451948594] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:34:19,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:34:19,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-01-27 19:34:19,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057591109] [2023-01-27 19:34:19,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:34:19,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 19:34:19,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:34:19,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 19:34:19,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-01-27 19:34:19,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-27 19:34:19,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 238 flow. Second operand has 25 states, 25 states have (on average 202.16) internal successors, (5054), 25 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:34:19,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:34:19,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-27 19:34:19,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:34:20,358 INFO L130 PetriNetUnfolder]: 3305/5537 cut-off events. [2023-01-27 19:34:20,358 INFO L131 PetriNetUnfolder]: For 549/549 co-relation queries the response was YES. [2023-01-27 19:34:20,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10891 conditions, 5537 events. 3305/5537 cut-off events. For 549/549 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 30907 event pairs, 3078 based on Foata normal form. 12/4615 useless extension candidates. Maximal degree in co-relation 10754. Up to 5166 conditions per place. [2023-01-27 19:34:20,386 INFO L137 encePairwiseOnDemand]: 414/417 looper letters, 47 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2023-01-27 19:34:20,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 76 transitions, 474 flow [2023-01-27 19:34:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 19:34:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 19:34:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4906 transitions. [2023-01-27 19:34:20,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4902078337330136 [2023-01-27 19:34:20,396 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4906 transitions. [2023-01-27 19:34:20,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4906 transitions. [2023-01-27 19:34:20,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:34:20,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4906 transitions. [2023-01-27 19:34:20,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 204.41666666666666) internal successors, (4906), 24 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:34:20,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 417.0) internal successors, (10425), 25 states have internal predecessors, (10425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:34:20,422 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 417.0) internal successors, (10425), 25 states have internal predecessors, (10425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:34:20,422 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 238 flow. Second operand 24 states and 4906 transitions. [2023-01-27 19:34:20,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 76 transitions, 474 flow [2023-01-27 19:34:20,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 76 transitions, 402 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-01-27 19:34:20,427 INFO L231 Difference]: Finished difference. Result has 110 places, 76 transitions, 358 flow [2023-01-27 19:34:20,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=358, PETRI_PLACES=110, PETRI_TRANSITIONS=76} [2023-01-27 19:34:20,428 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2023-01-27 19:34:20,428 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 76 transitions, 358 flow [2023-01-27 19:34:20,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 202.16) internal successors, (5054), 25 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:34:20,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:34:20,430 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-01-27 19:34:20,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 19:34:20,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:34:20,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:34:20,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:34:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash -500343998, now seen corresponding path program 4 times [2023-01-27 19:34:20,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:34:20,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16153325] [2023-01-27 19:34:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:34:20,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:34:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:34:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:34:21,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:34:21,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16153325] [2023-01-27 19:34:21,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16153325] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:34:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234606591] [2023-01-27 19:34:21,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 19:34:21,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:34:21,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:34:21,695 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:34:21,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 19:34:22,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 19:34:22,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:34:22,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-27 19:34:22,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:34:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:34:22,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:34:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:34:22,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234606591] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:34:22,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:34:22,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-01-27 19:34:22,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853712846] [2023-01-27 19:34:22,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:34:22,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-01-27 19:34:22,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:34:22,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-01-27 19:34:22,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-01-27 19:34:22,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-27 19:34:22,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 76 transitions, 358 flow. Second operand has 49 states, 49 states have (on average 202.08163265306123) internal successors, (9902), 49 states have internal predecessors, (9902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:34:22,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:34:22,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-27 19:34:22,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:34:23,715 INFO L130 PetriNetUnfolder]: 3305/5561 cut-off events. [2023-01-27 19:34:23,715 INFO L131 PetriNetUnfolder]: For 5319/5319 co-relation queries the response was YES. [2023-01-27 19:34:23,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11035 conditions, 5561 events. 3305/5561 cut-off events. For 5319/5319 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 30903 event pairs, 3078 based on Foata normal form. 24/4651 useless extension candidates. Maximal degree in co-relation 10766. Up to 5166 conditions per place. [2023-01-27 19:34:23,748 INFO L137 encePairwiseOnDemand]: 414/417 looper letters, 47 selfloop transitions, 47 changer transitions 0/100 dead transitions. [2023-01-27 19:34:23,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 100 transitions, 738 flow [2023-01-27 19:34:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-01-27 19:34:23,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-01-27 19:34:23,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9766 transitions. [2023-01-27 19:34:23,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48790967226219023 [2023-01-27 19:34:23,841 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9766 transitions. [2023-01-27 19:34:23,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9766 transitions. [2023-01-27 19:34:23,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:34:23,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9766 transitions. [2023-01-27 19:34:23,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 203.45833333333334) internal successors, (9766), 48 states have internal predecessors, (9766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:34:23,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 417.0) internal successors, (20433), 49 states have internal predecessors, (20433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:34:23,907 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 417.0) internal successors, (20433), 49 states have internal predecessors, (20433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:34:23,907 INFO L175 Difference]: Start difference. First operand has 110 places, 76 transitions, 358 flow. Second operand 48 states and 9766 transitions. [2023-01-27 19:34:23,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 100 transitions, 738 flow [2023-01-27 19:34:23,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 100 transitions, 594 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-01-27 19:34:23,916 INFO L231 Difference]: Finished difference. Result has 170 places, 100 transitions, 598 flow [2023-01-27 19:34:23,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=598, PETRI_PLACES=170, PETRI_TRANSITIONS=100} [2023-01-27 19:34:23,920 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2023-01-27 19:34:23,920 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 100 transitions, 598 flow [2023-01-27 19:34:23,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 202.08163265306123) internal successors, (9902), 49 states have internal predecessors, (9902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:34:23,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:34:23,923 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-01-27 19:34:23,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 19:34:24,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:34:24,132 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:34:24,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:34:24,132 INFO L85 PathProgramCache]: Analyzing trace with hash -584364350, now seen corresponding path program 5 times [2023-01-27 19:34:24,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:34:24,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548418829] [2023-01-27 19:34:24,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:34:24,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:34:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:34:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:34:27,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:34:27,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548418829] [2023-01-27 19:34:27,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548418829] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:34:27,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854845105] [2023-01-27 19:34:27,524 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 19:34:27,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:34:27,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:34:27,526 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:34:27,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-01-27 19:43:16,501 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:43:16,501 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:43:17,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-27 19:43:17,709 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-01-27 19:43:17,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-01-27 19:43:17,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:43:17,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-01-27 19:43:17,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-01-27 19:43:17,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9956642] [2023-01-27 19:43:17,739 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-01-27 19:43:17,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-01-27 19:43:17,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:43:17,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-01-27 19:43:17,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-01-27 19:43:17,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-27 19:43:17,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 100 transitions, 598 flow. Second operand has 49 states, 49 states have (on average 202.0408163265306) internal successors, (9900), 49 states have internal predecessors, (9900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:43:17,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:43:17,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-27 19:43:17,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:43:17,756 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-01-27 19:43:17,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 19:43:17,758 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-27 19:43:17,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-01-27 19:43:17,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 19:43:17,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-01-27 19:43:17,762 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-01-27 19:43:17,766 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 19:43:17,766 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 19:43:17,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 07:43:17 BasicIcfg [2023-01-27 19:43:17,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 19:43:17,772 INFO L158 Benchmark]: Toolchain (without parser) took 875181.66ms. Allocated memory was 348.1MB in the beginning and 503.3MB in the end (delta: 155.2MB). Free memory was 320.6MB in the beginning and 180.7MB in the end (delta: 139.9MB). Peak memory consumption was 294.3MB. Max. memory is 16.0GB. [2023-01-27 19:43:17,775 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:43:17,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 637.10ms. Allocated memory is still 348.1MB. Free memory was 320.6MB in the beginning and 283.8MB in the end (delta: 36.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-01-27 19:43:17,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.80ms. Allocated memory is still 348.1MB. Free memory was 283.8MB in the beginning and 280.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:43:17,775 INFO L158 Benchmark]: Boogie Preprocessor took 55.95ms. Allocated memory is still 348.1MB. Free memory was 280.9MB in the beginning and 278.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:43:17,776 INFO L158 Benchmark]: RCFGBuilder took 609.96ms. Allocated memory is still 348.1MB. Free memory was 278.5MB in the beginning and 308.7MB in the end (delta: -30.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 19:43:17,776 INFO L158 Benchmark]: TraceAbstraction took 873804.11ms. Allocated memory was 348.1MB in the beginning and 503.3MB in the end (delta: 155.2MB). Free memory was 307.8MB in the beginning and 180.7MB in the end (delta: 127.2MB). Peak memory consumption was 282.0MB. Max. memory is 16.0GB. [2023-01-27 19:43:17,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 637.10ms. Allocated memory is still 348.1MB. Free memory was 320.6MB in the beginning and 283.8MB in the end (delta: 36.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 67.80ms. Allocated memory is still 348.1MB. Free memory was 283.8MB in the beginning and 280.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 55.95ms. Allocated memory is still 348.1MB. Free memory was 280.9MB in the beginning and 278.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 609.96ms. Allocated memory is still 348.1MB. Free memory was 278.5MB in the beginning and 308.7MB in the end (delta: -30.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 873804.11ms. Allocated memory was 348.1MB in the beginning and 503.3MB in the end (delta: 155.2MB). Free memory was 307.8MB in the beginning and 180.7MB in the end (delta: 127.2MB). Peak memory consumption was 282.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 213 PlacesBefore, 54 PlacesAfterwards, 231 TransitionsBefore, 65 TransitionsAfterwards, 15880 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 112 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 19 ConcurrentYvCompositions, 7 ChoiceCompositions, 184 TotalNumberOfCompositions, 24331 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13248, independent: 12914, independent conditional: 0, independent unconditional: 12914, dependent: 334, dependent conditional: 0, dependent unconditional: 334, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8063, independent: 7976, independent conditional: 0, independent unconditional: 7976, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13248, independent: 4938, independent conditional: 0, independent unconditional: 4938, dependent: 247, dependent conditional: 0, dependent unconditional: 247, unknown: 8063, unknown conditional: 0, unknown unconditional: 8063] , Statistics on independence cache: Total cache size (in pairs): 343, Positive cache size: 309, Positive conditional cache size: 0, Positive unconditional cache size: 309, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1050]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1051]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 323 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: 873.7s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 832 IncrementalHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 832 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=598occurred in iteration=5, InterpolantAutomatonStates: 93, 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: 0.2s SsaConstructionTime, 326.3s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2961 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 14 InterpolantComputations, 1 PerfectInterpolantSequences, 28/2066 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