/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:49:25,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:49:25,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:49:25,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:49:25,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:49:25,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:49:25,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:49:25,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:49:25,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:49:25,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:49:25,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:49:25,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:49:25,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:49:25,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:49:25,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:49:25,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:49:25,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:49:25,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:49:25,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:49:25,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:49:25,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:49:25,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:49:25,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:49:25,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:49:25,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:49:25,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:49:25,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:49:25,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:49:25,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:49:25,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2023-01-28 07:49:25,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:49:25,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:49:25,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:49:25,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 07:49:25,875 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:49:25,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:49:25,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:49:25,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:49:25,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:49:25,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:49:25,877 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:49:25,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:49:25,877 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:49:25,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:49:25,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:49:25,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:49:25,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:49:25,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:49:25,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:49:25,878 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:49:25,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:49:25,879 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:49:25,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:49:25,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:49:25,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:49:25,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:49:25,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:49:25,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:49:25,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:49:25,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:49:25,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:49:25,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:49:25,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:49:25,880 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:49:25,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:49:25,880 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:49:26,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:49:26,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:49:26,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:49:26,070 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:49:26,070 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:49:26,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-01-28 07:49:26,959 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:49:27,251 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:49:27,251 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-01-28 07:49:27,266 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/284a8ae39/2c1d1633375c4bcea908439e9d7e434b/FLAG5c2439350 [2023-01-28 07:49:27,280 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/284a8ae39/2c1d1633375c4bcea908439e9d7e434b [2023-01-28 07:49:27,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:49:27,283 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:49:27,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:49:27,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:49:27,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:49:27,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55dd837a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27, skipping insertion in model container [2023-01-28 07:49:27,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:49:27,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:49:27,495 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_10-ptrmunge_racefree.i[30176,30189] [2023-01-28 07:49:27,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:49:27,535 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:49:27,577 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_10-ptrmunge_racefree.i[30176,30189] [2023-01-28 07:49:27,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:49:27,620 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:49:27,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27 WrapperNode [2023-01-28 07:49:27,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:49:27,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:49:27,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:49:27,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:49:27,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,677 INFO L138 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 220 [2023-01-28 07:49:27,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:49:27,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:49:27,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:49:27,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:49:27,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,708 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:49:27,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:49:27,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:49:27,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:49:27,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27" (1/1) ... [2023-01-28 07:49:27,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:49:27,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:49:27,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 07:49:27,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 07:49:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 07:49:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 07:49:27,786 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 07:49:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:49:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 07:49:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:49:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:49:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 07:49:27,787 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 07:49:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:49:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:49:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:49:27,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:49:27,788 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:49:27,898 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:49:27,899 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:49:28,226 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:49:28,234 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:49:28,235 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-01-28 07:49:28,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:49:28 BoogieIcfgContainer [2023-01-28 07:49:28,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:49:28,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:49:28,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:49:28,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:49:28,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:49:27" (1/3) ... [2023-01-28 07:49:28,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d0f9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:49:28, skipping insertion in model container [2023-01-28 07:49:28,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:49:27" (2/3) ... [2023-01-28 07:49:28,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d0f9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:49:28, skipping insertion in model container [2023-01-28 07:49:28,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:49:28" (3/3) ... [2023-01-28 07:49:28,250 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2023-01-28 07:49:28,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:49:28,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 07:49:28,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:49:28,415 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 07:49:28,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 217 transitions, 456 flow [2023-01-28 07:49:28,551 INFO L130 PetriNetUnfolder]: 58/382 cut-off events. [2023-01-28 07:49:28,551 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-01-28 07:49:28,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 382 events. 58/382 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1620 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-01-28 07:49:28,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 217 transitions, 456 flow [2023-01-28 07:49:28,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 217 transitions, 456 flow [2023-01-28 07:49:28,576 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:49:28,595 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 217 transitions, 456 flow [2023-01-28 07:49:28,598 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 217 transitions, 456 flow [2023-01-28 07:49:28,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 217 transitions, 456 flow [2023-01-28 07:49:28,661 INFO L130 PetriNetUnfolder]: 58/382 cut-off events. [2023-01-28 07:49:28,661 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-01-28 07:49:28,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 382 events. 58/382 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1620 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-01-28 07:49:28,680 INFO L119 LiptonReduction]: Number of co-enabled transitions 18788 [2023-01-28 07:49:32,757 INFO L134 LiptonReduction]: Checked pairs total: 33979 [2023-01-28 07:49:32,758 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-01-28 07:49:32,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:49:32,777 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;@458ada24, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:49:32,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:49:32,782 INFO L130 PetriNetUnfolder]: 4/38 cut-off events. [2023-01-28 07:49:32,783 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:49:32,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:49:32,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:49:32,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 07:49:32,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:49:32,788 INFO L85 PathProgramCache]: Analyzing trace with hash -173945030, now seen corresponding path program 1 times [2023-01-28 07:49:32,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:49:32,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650863491] [2023-01-28 07:49:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:49:32,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:49:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:49:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:49:33,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:49:33,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650863491] [2023-01-28 07:49:33,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650863491] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:49:33,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:49:33,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:49:33,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812983087] [2023-01-28 07:49:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:49:33,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:49:33,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:49:33,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:49:33,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:49:33,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 381 [2023-01-28 07:49:33,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 79 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:33,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:49:33,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 381 [2023-01-28 07:49:33,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:49:34,024 INFO L130 PetriNetUnfolder]: 4680/7780 cut-off events. [2023-01-28 07:49:34,024 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2023-01-28 07:49:34,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15236 conditions, 7780 events. 4680/7780 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 50349 event pairs, 3182 based on Foata normal form. 1075/7189 useless extension candidates. Maximal degree in co-relation 13932. Up to 5907 conditions per place. [2023-01-28 07:49:34,047 INFO L137 encePairwiseOnDemand]: 351/381 looper letters, 76 selfloop transitions, 8 changer transitions 43/138 dead transitions. [2023-01-28 07:49:34,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 138 transitions, 573 flow [2023-01-28 07:49:34,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:49:34,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:49:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1173 transitions. [2023-01-28 07:49:34,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398200224971879 [2023-01-28 07:49:34,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1173 transitions. [2023-01-28 07:49:34,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1173 transitions. [2023-01-28 07:49:34,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:49:34,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1173 transitions. [2023-01-28 07:49:34,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 167.57142857142858) internal successors, (1173), 7 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:34,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 381.0) internal successors, (3048), 8 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:34,079 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 381.0) internal successors, (3048), 8 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:34,080 INFO L175 Difference]: Start difference. First operand has 58 places, 79 transitions, 180 flow. Second operand 7 states and 1173 transitions. [2023-01-28 07:49:34,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 138 transitions, 573 flow [2023-01-28 07:49:34,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 138 transitions, 573 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:49:34,096 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 216 flow [2023-01-28 07:49:34,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2023-01-28 07:49:34,100 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2023-01-28 07:49:34,100 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 216 flow [2023-01-28 07:49:34,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:34,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:49:34,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:49:34,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:49:34,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 07:49:34,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:49:34,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1709411710, now seen corresponding path program 1 times [2023-01-28 07:49:34,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:49:34,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675803210] [2023-01-28 07:49:34,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:49:34,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:49:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:49:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:49:34,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:49:34,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675803210] [2023-01-28 07:49:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675803210] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:49:34,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:49:34,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:49:34,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287638692] [2023-01-28 07:49:34,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:49:34,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:49:34,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:49:34,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:49:34,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:49:34,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 381 [2023-01-28 07:49:34,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:34,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:49:34,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 381 [2023-01-28 07:49:34,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:49:34,727 INFO L130 PetriNetUnfolder]: 4062/7153 cut-off events. [2023-01-28 07:49:34,727 INFO L131 PetriNetUnfolder]: For 3193/3193 co-relation queries the response was YES. [2023-01-28 07:49:34,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16014 conditions, 7153 events. 4062/7153 cut-off events. For 3193/3193 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 50000 event pairs, 2763 based on Foata normal form. 1/6331 useless extension candidates. Maximal degree in co-relation 15524. Up to 6282 conditions per place. [2023-01-28 07:49:34,758 INFO L137 encePairwiseOnDemand]: 378/381 looper letters, 64 selfloop transitions, 2 changer transitions 1/80 dead transitions. [2023-01-28 07:49:34,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 392 flow [2023-01-28 07:49:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:49:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:49:34,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-01-28 07:49:34,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153105861767279 [2023-01-28 07:49:34,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-01-28 07:49:34,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-01-28 07:49:34,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:49:34,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-01-28 07:49:34,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:34,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:34,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:34,765 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 216 flow. Second operand 3 states and 589 transitions. [2023-01-28 07:49:34,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 392 flow [2023-01-28 07:49:34,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 80 transitions, 386 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 07:49:34,772 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 218 flow [2023-01-28 07:49:34,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2023-01-28 07:49:34,773 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2023-01-28 07:49:34,773 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 218 flow [2023-01-28 07:49:34,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:34,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:49:34,774 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:49:34,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:49:34,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 07:49:34,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:49:34,774 INFO L85 PathProgramCache]: Analyzing trace with hash 342566962, now seen corresponding path program 1 times [2023-01-28 07:49:34,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:49:34,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451325134] [2023-01-28 07:49:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:49:34,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:49:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:49:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:49:34,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:49:34,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451325134] [2023-01-28 07:49:34,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451325134] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:49:34,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589375674] [2023-01-28 07:49:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:49:34,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:49:34,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:49:34,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 07:49:34,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 07:49:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:49:34,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 07:49:34,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:49:35,052 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 07:49:35,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-01-28 07:49:35,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 07:49:35,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 07:49:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:49:35,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:49:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:49:35,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589375674] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:49:35,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:49:35,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-01-28 07:49:35,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255464307] [2023-01-28 07:49:35,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:49:35,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 07:49:35,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:49:35,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 07:49:35,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=54, Unknown=9, NotChecked=0, Total=90 [2023-01-28 07:49:35,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 381 [2023-01-28 07:49:35,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 218 flow. Second operand has 10 states, 10 states have (on average 144.3) internal successors, (1443), 10 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:35,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:49:35,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 381 [2023-01-28 07:49:35,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:49:35,899 INFO L130 PetriNetUnfolder]: 4528/7551 cut-off events. [2023-01-28 07:49:35,899 INFO L131 PetriNetUnfolder]: For 2434/2436 co-relation queries the response was YES. [2023-01-28 07:49:35,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17051 conditions, 7551 events. 4528/7551 cut-off events. For 2434/2436 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 49294 event pairs, 2537 based on Foata normal form. 1/6671 useless extension candidates. Maximal degree in co-relation 16926. Up to 5754 conditions per place. [2023-01-28 07:49:35,940 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 74 selfloop transitions, 7 changer transitions 25/116 dead transitions. [2023-01-28 07:49:35,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 116 transitions, 565 flow [2023-01-28 07:49:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:49:35,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:49:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 816 transitions. [2023-01-28 07:49:35,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4283464566929134 [2023-01-28 07:49:35,942 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 816 transitions. [2023-01-28 07:49:35,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 816 transitions. [2023-01-28 07:49:35,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:49:35,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 816 transitions. [2023-01-28 07:49:35,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:35,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:35,947 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:35,947 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 218 flow. Second operand 5 states and 816 transitions. [2023-01-28 07:49:35,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 116 transitions, 565 flow [2023-01-28 07:49:35,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 116 transitions, 557 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:49:35,954 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 223 flow [2023-01-28 07:49:35,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2023-01-28 07:49:35,955 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2023-01-28 07:49:35,955 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 223 flow [2023-01-28 07:49:35,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.3) internal successors, (1443), 10 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:35,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:49:35,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:49:35,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 07:49:36,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:49:36,163 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 07:49:36,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:49:36,164 INFO L85 PathProgramCache]: Analyzing trace with hash 389992435, now seen corresponding path program 1 times [2023-01-28 07:49:36,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:49:36,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937889041] [2023-01-28 07:49:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:49:36,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:49:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:49:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:49:36,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:49:36,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937889041] [2023-01-28 07:49:36,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937889041] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:49:36,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418556134] [2023-01-28 07:49:36,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:49:36,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:49:36,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:49:36,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 07:49:36,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 07:49:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:49:36,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 07:49:36,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:49:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:49:36,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:49:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:49:36,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418556134] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:49:36,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:49:36,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 07:49:36,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131492208] [2023-01-28 07:49:36,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:49:36,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:49:36,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:49:36,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:49:36,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 07:49:36,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 381 [2023-01-28 07:49:36,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 178.57142857142858) internal successors, (1250), 7 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:36,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:49:36,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 381 [2023-01-28 07:49:36,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:49:36,356 INFO L130 PetriNetUnfolder]: 20/73 cut-off events. [2023-01-28 07:49:36,356 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-01-28 07:49:36,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 73 events. 20/73 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 216 event pairs, 0 based on Foata normal form. 15/85 useless extension candidates. Maximal degree in co-relation 195. Up to 50 conditions per place. [2023-01-28 07:49:36,356 INFO L137 encePairwiseOnDemand]: 378/381 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-01-28 07:49:36,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 183 flow [2023-01-28 07:49:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:49:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:49:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 736 transitions. [2023-01-28 07:49:36,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48293963254593175 [2023-01-28 07:49:36,358 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 736 transitions. [2023-01-28 07:49:36,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 736 transitions. [2023-01-28 07:49:36,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:49:36,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 736 transitions. [2023-01-28 07:49:36,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:36,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:36,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:36,362 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 223 flow. Second operand 4 states and 736 transitions. [2023-01-28 07:49:36,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 183 flow [2023-01-28 07:49:36,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 143 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-01-28 07:49:36,363 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-01-28 07:49:36,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-01-28 07:49:36,363 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -29 predicate places. [2023-01-28 07:49:36,364 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-01-28 07:49:36,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.57142857142858) internal successors, (1250), 7 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:36,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:49:36,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-01-28 07:49:36,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-01-28 07:49:36,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-01-28 07:49:36,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 07:49:36,571 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,SelfDestructingSolverStorable3 [2023-01-28 07:49:36,571 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-01-28 07:49:36,573 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-01-28 07:49:36,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 217 transitions, 456 flow [2023-01-28 07:49:36,598 INFO L130 PetriNetUnfolder]: 58/382 cut-off events. [2023-01-28 07:49:36,598 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-01-28 07:49:36,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 382 events. 58/382 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1620 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-01-28 07:49:36,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 217 transitions, 456 flow [2023-01-28 07:49:36,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 217 transitions, 456 flow [2023-01-28 07:49:36,601 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:49:36,601 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 217 transitions, 456 flow [2023-01-28 07:49:36,602 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 217 transitions, 456 flow [2023-01-28 07:49:36,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 217 transitions, 456 flow [2023-01-28 07:49:36,620 INFO L130 PetriNetUnfolder]: 58/382 cut-off events. [2023-01-28 07:49:36,621 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-01-28 07:49:36,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 382 events. 58/382 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1620 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-01-28 07:49:36,629 INFO L119 LiptonReduction]: Number of co-enabled transitions 18788 [2023-01-28 07:49:39,848 INFO L134 LiptonReduction]: Checked pairs total: 31210 [2023-01-28 07:49:39,848 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-01-28 07:49:39,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 07:49:39,850 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;@458ada24, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:49:39,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 07:49:39,852 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-01-28 07:49:39,852 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:49:39,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:49:39,852 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 07:49:39,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 07:49:39,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:49:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash 650581034, now seen corresponding path program 1 times [2023-01-28 07:49:39,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:49:39,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830588189] [2023-01-28 07:49:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:49:39,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:49:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:49:39,872 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 07:49:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:49:39,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 07:49:39,891 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 07:49:39,891 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 07:49:39,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 07:49:39,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:49:39,893 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 07:49:39,894 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-01-28 07:49:39,894 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 07:49:39,894 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 07:49:39,942 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 07:49:39,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 345 transitions, 738 flow [2023-01-28 07:49:40,045 INFO L130 PetriNetUnfolder]: 197/1105 cut-off events. [2023-01-28 07:49:40,045 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-01-28 07:49:40,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 1105 events. 197/1105 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6613 event pairs, 1 based on Foata normal form. 0/913 useless extension candidates. Maximal degree in co-relation 673. Up to 32 conditions per place. [2023-01-28 07:49:40,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 345 transitions, 738 flow [2023-01-28 07:49:40,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 345 transitions, 738 flow [2023-01-28 07:49:40,071 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:49:40,071 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 345 transitions, 738 flow [2023-01-28 07:49:40,071 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 345 transitions, 738 flow [2023-01-28 07:49:40,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 345 transitions, 738 flow [2023-01-28 07:49:40,190 INFO L130 PetriNetUnfolder]: 197/1105 cut-off events. [2023-01-28 07:49:40,190 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-01-28 07:49:40,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 1105 events. 197/1105 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6613 event pairs, 1 based on Foata normal form. 0/913 useless extension candidates. Maximal degree in co-relation 673. Up to 32 conditions per place. [2023-01-28 07:49:40,242 INFO L119 LiptonReduction]: Number of co-enabled transitions 69784 [2023-01-28 07:49:44,570 INFO L134 LiptonReduction]: Checked pairs total: 148587 [2023-01-28 07:49:44,571 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-01-28 07:49:44,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:49:44,579 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;@458ada24, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:49:44,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 07:49:44,582 INFO L130 PetriNetUnfolder]: 7/41 cut-off events. [2023-01-28 07:49:44,582 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 07:49:44,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:49:44,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:49:44,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:49:44,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:49:44,583 INFO L85 PathProgramCache]: Analyzing trace with hash -528924341, now seen corresponding path program 1 times [2023-01-28 07:49:44,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:49:44,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891761337] [2023-01-28 07:49:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:49:44,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:49:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:49:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:49:44,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:49:44,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891761337] [2023-01-28 07:49:44,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891761337] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:49:44,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:49:44,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:49:44,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108186552] [2023-01-28 07:49:44,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:49:44,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:49:44,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:49:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:49:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:49:44,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 596 [2023-01-28 07:49:44,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 145 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 205.16666666666666) internal successors, (1231), 6 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:49:44,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:49:44,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 596 [2023-01-28 07:49:44,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand