/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/pthread-ext/26_stack_cas.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 17:50:59,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 17:50:59,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 17:50:59,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 17:50:59,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 17:50:59,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 17:50:59,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 17:50:59,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 17:50:59,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 17:50:59,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 17:50:59,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 17:50:59,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 17:50:59,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 17:50:59,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 17:50:59,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 17:50:59,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 17:50:59,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 17:50:59,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 17:50:59,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 17:50:59,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 17:50:59,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 17:50:59,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 17:50:59,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 17:50:59,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 17:50:59,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 17:50:59,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 17:50:59,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 17:50:59,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 17:50:59,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 17:50:59,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 17:50:59,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 17:50:59,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 17:50:59,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 17:50:59,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 17:50:59,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 17:50:59,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 17:50:59,873 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 17:50:59,897 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 17:50:59,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 17:50:59,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 17:50:59,899 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 17:50:59,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 17:50:59,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 17:50:59,900 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 17:50:59,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 17:50:59,900 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 17:50:59,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 17:50:59,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 17:50:59,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 17:50:59,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 17:50:59,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 17:50:59,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 17:50:59,901 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 17:50:59,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 17:50:59,902 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 17:50:59,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 17:50:59,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 17:50:59,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 17:50:59,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 17:50:59,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 17:50:59,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:50:59,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 17:50:59,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 17:50:59,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 17:50:59,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 17:50:59,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 17:50:59,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 17:50:59,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 17:50:59,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 17:51:00,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 17:51:00,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 17:51:00,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 17:51:00,130 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 17:51:00,133 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 17:51:00,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas.i [2023-01-27 17:51:01,249 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 17:51:01,446 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 17:51:01,446 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas.i [2023-01-27 17:51:01,456 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75709b54e/bdeb56569e11438faa7698b35b98d74d/FLAGdee2e8513 [2023-01-27 17:51:01,470 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75709b54e/bdeb56569e11438faa7698b35b98d74d [2023-01-27 17:51:01,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 17:51:01,474 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 17:51:01,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 17:51:01,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 17:51:01,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 17:51:01,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:01,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7433cf08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01, skipping insertion in model container [2023-01-27 17:51:01,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:01,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 17:51:01,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 17:51:01,844 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas.i[31152,31165] [2023-01-27 17:51:01,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:51:01,868 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 17:51:01,918 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas.i[31152,31165] [2023-01-27 17:51:01,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:51:01,968 INFO L208 MainTranslator]: Completed translation [2023-01-27 17:51:01,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01 WrapperNode [2023-01-27 17:51:01,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 17:51:01,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 17:51:01,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 17:51:01,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 17:51:01,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:02,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:02,039 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 188 [2023-01-27 17:51:02,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 17:51:02,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 17:51:02,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 17:51:02,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 17:51:02,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:02,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:02,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:02,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:02,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:02,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:02,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:02,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:02,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 17:51:02,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 17:51:02,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 17:51:02,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 17:51:02,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01" (1/1) ... [2023-01-27 17:51:02,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:51:02,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:51:02,122 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 17:51:02,132 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 17:51:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 17:51:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-01-27 17:51:02,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-01-27 17:51:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 17:51:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 17:51:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 17:51:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 17:51:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 17:51:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 17:51:02,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 17:51:02,167 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 17:51:02,328 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 17:51:02,329 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 17:51:02,608 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 17:51:02,800 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 17:51:02,801 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-27 17:51:02,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:51:02 BoogieIcfgContainer [2023-01-27 17:51:02,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 17:51:02,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 17:51:02,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 17:51:02,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 17:51:02,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 05:51:01" (1/3) ... [2023-01-27 17:51:02,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ae23fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:51:02, skipping insertion in model container [2023-01-27 17:51:02,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:51:01" (2/3) ... [2023-01-27 17:51:02,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ae23fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:51:02, skipping insertion in model container [2023-01-27 17:51:02,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:51:02" (3/3) ... [2023-01-27 17:51:02,809 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas.i [2023-01-27 17:51:02,826 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 17:51:02,826 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 17:51:02,827 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 17:51:02,914 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 17:51:02,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 114 transitions, 233 flow [2023-01-27 17:51:03,018 INFO L130 PetriNetUnfolder]: 11/124 cut-off events. [2023-01-27 17:51:03,018 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 17:51:03,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 11/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-01-27 17:51:03,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 114 transitions, 233 flow [2023-01-27 17:51:03,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 114 transitions, 233 flow [2023-01-27 17:51:03,034 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 17:51:03,054 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 114 transitions, 233 flow [2023-01-27 17:51:03,056 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 114 transitions, 233 flow [2023-01-27 17:51:03,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 114 transitions, 233 flow [2023-01-27 17:51:03,090 INFO L130 PetriNetUnfolder]: 11/124 cut-off events. [2023-01-27 17:51:03,091 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 17:51:03,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 11/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-01-27 17:51:03,096 INFO L119 LiptonReduction]: Number of co-enabled transitions 2028 [2023-01-27 17:51:06,782 INFO L134 LiptonReduction]: Checked pairs total: 2167 [2023-01-27 17:51:06,782 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-01-27 17:51:06,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 17:51:06,800 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;@5c2c33b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 17:51:06,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 17:51:06,804 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-01-27 17:51:06,804 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 17:51:06,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:51:06,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-27 17:51:06,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 17:51:06,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:51:06,809 INFO L85 PathProgramCache]: Analyzing trace with hash 174361225, now seen corresponding path program 1 times [2023-01-27 17:51:06,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:51:06,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638486346] [2023-01-27 17:51:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:51:06,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:51:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 17:51:06,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-27 17:51:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 17:51:06,950 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-27 17:51:06,951 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-27 17:51:06,952 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-01-27 17:51:06,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-01-27 17:51:06,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-01-27 17:51:06,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 17:51:06,955 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-27 17:51:06,957 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-27 17:51:06,958 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-27 17:51:07,019 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 17:51:07,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 193 transitions, 398 flow [2023-01-27 17:51:07,080 INFO L130 PetriNetUnfolder]: 21/215 cut-off events. [2023-01-27 17:51:07,081 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:51:07,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 215 events. 21/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 410 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 168. Up to 6 conditions per place. [2023-01-27 17:51:07,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 193 transitions, 398 flow [2023-01-27 17:51:07,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 193 transitions, 398 flow [2023-01-27 17:51:07,089 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 17:51:07,089 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 193 transitions, 398 flow [2023-01-27 17:51:07,090 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 193 transitions, 398 flow [2023-01-27 17:51:07,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 193 transitions, 398 flow [2023-01-27 17:51:07,132 INFO L130 PetriNetUnfolder]: 21/215 cut-off events. [2023-01-27 17:51:07,132 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:51:07,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 215 events. 21/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 410 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 168. Up to 6 conditions per place. [2023-01-27 17:51:07,146 INFO L119 LiptonReduction]: Number of co-enabled transitions 16380 [2023-01-27 17:51:11,497 INFO L134 LiptonReduction]: Checked pairs total: 33585 [2023-01-27 17:51:11,497 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-01-27 17:51:11,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 17:51:11,503 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;@5c2c33b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 17:51:11,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 17:51:11,512 INFO L130 PetriNetUnfolder]: 4/34 cut-off events. [2023-01-27 17:51:11,512 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:51:11,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:51:11,513 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-27 17:51:11,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-27 17:51:11,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:51:11,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1971217253, now seen corresponding path program 1 times [2023-01-27 17:51:11,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:51:11,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518760314] [2023-01-27 17:51:11,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:51:11,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:51:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 17:51:11,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-27 17:51:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 17:51:11,568 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-27 17:51:11,568 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-27 17:51:11,568 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-01-27 17:51:11,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-01-27 17:51:11,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-01-27 17:51:11,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-01-27 17:51:11,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 17:51:11,569 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-27 17:51:11,570 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-27 17:51:11,570 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-27 17:51:11,621 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 17:51:11,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 272 transitions, 565 flow [2023-01-27 17:51:11,691 INFO L130 PetriNetUnfolder]: 31/306 cut-off events. [2023-01-27 17:51:11,691 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-27 17:51:11,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 306 events. 31/306 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 814 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 246. Up to 8 conditions per place. [2023-01-27 17:51:11,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 272 transitions, 565 flow [2023-01-27 17:51:11,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 272 transitions, 565 flow [2023-01-27 17:51:11,699 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 17:51:11,699 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 272 transitions, 565 flow [2023-01-27 17:51:11,699 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 272 transitions, 565 flow [2023-01-27 17:51:11,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 272 transitions, 565 flow [2023-01-27 17:51:11,745 INFO L130 PetriNetUnfolder]: 31/306 cut-off events. [2023-01-27 17:51:11,745 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-27 17:51:11,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 306 events. 31/306 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 814 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 246. Up to 8 conditions per place. [2023-01-27 17:51:11,769 INFO L119 LiptonReduction]: Number of co-enabled transitions 43056 [2023-01-27 17:51:17,240 INFO L134 LiptonReduction]: Checked pairs total: 78907 [2023-01-27 17:51:17,241 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-01-27 17:51:17,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 17:51:17,243 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;@5c2c33b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 17:51:17,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 17:51:17,250 INFO L130 PetriNetUnfolder]: 7/57 cut-off events. [2023-01-27 17:51:17,250 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-27 17:51:17,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:51:17,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:51:17,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-27 17:51:17,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:51:17,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1544388608, now seen corresponding path program 1 times [2023-01-27 17:51:17,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:51:17,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592671566] [2023-01-27 17:51:17,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:51:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:51:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:51:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:51:17,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:51:17,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592671566] [2023-01-27 17:51:17,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592671566] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:51:17,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:51:17,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 17:51:17,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519290379] [2023-01-27 17:51:17,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:51:17,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 17:51:17,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:51:17,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 17:51:17,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 17:51:17,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 490 [2023-01-27 17:51:17,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 96 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 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 17:51:17,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:51:17,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 490 [2023-01-27 17:51:17,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:51:23,554 INFO L130 PetriNetUnfolder]: 53543/75895 cut-off events. [2023-01-27 17:51:23,554 INFO L131 PetriNetUnfolder]: For 2734/2734 co-relation queries the response was YES. [2023-01-27 17:51:23,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148813 conditions, 75895 events. 53543/75895 cut-off events. For 2734/2734 co-relation queries the response was YES. Maximal size of possible extension queue 2088. Compared 540833 event pairs, 4345 based on Foata normal form. 0/61788 useless extension candidates. Maximal degree in co-relation 92118. Up to 49070 conditions per place. [2023-01-27 17:51:24,185 INFO L137 encePairwiseOnDemand]: 474/490 looper letters, 209 selfloop transitions, 9 changer transitions 0/234 dead transitions. [2023-01-27 17:51:24,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 234 transitions, 956 flow [2023-01-27 17:51:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:51:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:51:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1323 transitions. [2023-01-27 17:51:24,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2023-01-27 17:51:24,201 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1323 transitions. [2023-01-27 17:51:24,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1323 transitions. [2023-01-27 17:51:24,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:51:24,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1323 transitions. [2023-01-27 17:51:24,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 264.6) internal successors, (1323), 5 states have internal predecessors, (1323), 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 17:51:24,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 490.0) internal successors, (2940), 6 states have internal predecessors, (2940), 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 17:51:24,222 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 490.0) internal successors, (2940), 6 states have internal predecessors, (2940), 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 17:51:24,223 INFO L175 Difference]: Start difference. First operand has 82 places, 96 transitions, 213 flow. Second operand 5 states and 1323 transitions. [2023-01-27 17:51:24,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 234 transitions, 956 flow [2023-01-27 17:51:24,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 234 transitions, 944 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-01-27 17:51:24,233 INFO L231 Difference]: Finished difference. Result has 89 places, 97 transitions, 267 flow [2023-01-27 17:51:24,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=89, PETRI_TRANSITIONS=97} [2023-01-27 17:51:24,238 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 7 predicate places. [2023-01-27 17:51:24,238 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 97 transitions, 267 flow [2023-01-27 17:51:24,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 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 17:51:24,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:51:24,239 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-27 17:51:24,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 17:51:24,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-27 17:51:24,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:51:24,240 INFO L85 PathProgramCache]: Analyzing trace with hash -271960691, now seen corresponding path program 1 times [2023-01-27 17:51:24,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:51:24,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186427140] [2023-01-27 17:51:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:51:24,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:51:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 17:51:24,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-27 17:51:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 17:51:24,274 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-27 17:51:24,274 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-27 17:51:24,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-01-27 17:51:24,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-01-27 17:51:24,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-01-27 17:51:24,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-01-27 17:51:24,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-01-27 17:51:24,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 17:51:24,275 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-01-27 17:51:24,276 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-27 17:51:24,276 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-27 17:51:24,332 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 17:51:24,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 351 transitions, 734 flow [2023-01-27 17:51:24,400 INFO L130 PetriNetUnfolder]: 41/397 cut-off events. [2023-01-27 17:51:24,401 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-01-27 17:51:24,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 397 events. 41/397 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1280 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 324. Up to 10 conditions per place. [2023-01-27 17:51:24,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 323 places, 351 transitions, 734 flow [2023-01-27 17:51:24,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 323 places, 351 transitions, 734 flow [2023-01-27 17:51:24,411 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 17:51:24,412 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 323 places, 351 transitions, 734 flow [2023-01-27 17:51:24,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 323 places, 351 transitions, 734 flow [2023-01-27 17:51:24,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 351 transitions, 734 flow [2023-01-27 17:51:24,475 INFO L130 PetriNetUnfolder]: 41/397 cut-off events. [2023-01-27 17:51:24,475 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-01-27 17:51:24,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 397 events. 41/397 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1280 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 324. Up to 10 conditions per place. [2023-01-27 17:51:24,499 INFO L119 LiptonReduction]: Number of co-enabled transitions 82056 [2023-01-27 17:51:31,579 INFO L134 LiptonReduction]: Checked pairs total: 163123 [2023-01-27 17:51:31,579 INFO L136 LiptonReduction]: Total number of compositions: 282 [2023-01-27 17:51:31,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 17:51:31,582 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;@5c2c33b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 17:51:31,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 17:51:31,589 INFO L130 PetriNetUnfolder]: 8/56 cut-off events. [2023-01-27 17:51:31,590 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 17:51:31,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:51:31,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:51:31,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-27 17:51:31,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:51:31,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1068344059, now seen corresponding path program 1 times [2023-01-27 17:51:31,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:51:31,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990849918] [2023-01-27 17:51:31,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:51:31,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:51:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:51:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:51:31,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:51:31,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990849918] [2023-01-27 17:51:31,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990849918] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:51:31,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:51:31,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 17:51:31,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800272356] [2023-01-27 17:51:31,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:51:31,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 17:51:31,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:51:31,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 17:51:31,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 17:51:31,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 633 [2023-01-27 17:51:31,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 128 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 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 17:51:31,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:51:31,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 633 [2023-01-27 17:51:31,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:54:02,939 INFO L130 PetriNetUnfolder]: 1403237/1846935 cut-off events. [2023-01-27 17:54:02,949 INFO L131 PetriNetUnfolder]: For 82382/82382 co-relation queries the response was YES. [2023-01-27 17:54:06,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624844 conditions, 1846935 events. 1403237/1846935 cut-off events. For 82382/82382 co-relation queries the response was YES. Maximal size of possible extension queue 34452. Compared 14644321 event pairs, 194809 based on Foata normal form. 16330/1510322 useless extension candidates. Maximal degree in co-relation 893474. Up to 1175610 conditions per place. [2023-01-27 17:54:18,493 INFO L137 encePairwiseOnDemand]: 611/633 looper letters, 318 selfloop transitions, 17 changer transitions 0/357 dead transitions. [2023-01-27 17:54:18,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 357 transitions, 1474 flow [2023-01-27 17:54:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:54:18,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:54:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1768 transitions. [2023-01-27 17:54:18,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5586097946287519 [2023-01-27 17:54:18,507 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1768 transitions. [2023-01-27 17:54:18,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1768 transitions. [2023-01-27 17:54:18,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:54:18,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1768 transitions. [2023-01-27 17:54:18,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 353.6) internal successors, (1768), 5 states have internal predecessors, (1768), 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 17:54:18,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 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 17:54:18,534 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 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 17:54:18,534 INFO L175 Difference]: Start difference. First operand has 109 places, 128 transitions, 288 flow. Second operand 5 states and 1768 transitions. [2023-01-27 17:54:18,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 357 transitions, 1474 flow [2023-01-27 17:54:18,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 357 transitions, 1444 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-01-27 17:54:18,707 INFO L231 Difference]: Finished difference. Result has 116 places, 134 transitions, 396 flow [2023-01-27 17:54:18,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=116, PETRI_TRANSITIONS=134} [2023-01-27 17:54:18,709 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 7 predicate places. [2023-01-27 17:54:18,709 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 134 transitions, 396 flow [2023-01-27 17:54:18,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 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 17:54:18,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:54:18,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:54:18,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 17:54:18,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-27 17:54:18,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:54:18,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1687160668, now seen corresponding path program 1 times [2023-01-27 17:54:18,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:54:18,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053179527] [2023-01-27 17:54:18,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:54:18,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:54:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:54:18,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:54:18,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:54:18,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053179527] [2023-01-27 17:54:18,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053179527] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:54:18,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:54:18,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 17:54:18,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340094282] [2023-01-27 17:54:18,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:54:18,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:54:18,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:54:18,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:54:18,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:54:18,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 633 [2023-01-27 17:54:18,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 134 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 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 17:54:18,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:54:18,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 633 [2023-01-27 17:54:18,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand