/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/pthread/sync01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 06:26:31,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 06:26:31,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 06:26:31,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 06:26:31,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 06:26:31,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 06:26:31,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 06:26:31,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 06:26:31,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 06:26:31,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 06:26:31,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 06:26:31,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 06:26:31,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 06:26:31,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 06:26:31,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 06:26:31,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 06:26:31,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 06:26:31,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 06:26:31,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 06:26:31,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 06:26:31,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 06:26:31,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 06:26:31,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 06:26:31,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 06:26:31,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 06:26:31,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 06:26:31,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 06:26:31,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 06:26:31,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 06:26:31,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2023-01-28 06:26:31,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 06:26:31,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 06:26:31,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 06:26:31,599 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 06:26:31,624 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 06:26:31,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 06:26:31,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 06:26:31,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 06:26:31,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 06:26:31,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 06:26:31,626 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 06:26:31,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 06:26:31,626 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 06:26:31,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 06:26:31,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 06:26:31,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 06:26:31,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 06:26:31,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 06:26:31,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 06:26:31,627 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 06:26:31,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 06:26:31,627 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 06:26:31,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 06:26:31,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 06:26:31,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 06:26:31,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 06:26:31,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 06:26:31,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:26:31,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 06:26:31,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 06:26:31,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 06:26:31,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 06:26:31,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 06:26:31,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 06:26:31,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 06:26:31,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 06:26:31,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 06:26:31,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 06:26:31,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 06:26:31,883 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 06:26:31,883 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 06:26:31,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2023-01-28 06:26:32,932 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 06:26:33,216 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 06:26:33,217 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2023-01-28 06:26:33,232 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfb354bad/836c589fbae749558760a712b570b065/FLAG66dd44946 [2023-01-28 06:26:33,248 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfb354bad/836c589fbae749558760a712b570b065 [2023-01-28 06:26:33,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 06:26:33,251 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 06:26:33,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 06:26:33,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 06:26:33,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 06:26:33,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7854ad11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33, skipping insertion in model container [2023-01-28 06:26:33,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 06:26:33,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 06:26:33,635 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/sync01.i[42004,42017] [2023-01-28 06:26:33,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:26:33,650 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 06:26:33,714 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/sync01.i[42004,42017] [2023-01-28 06:26:33,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:26:33,770 INFO L208 MainTranslator]: Completed translation [2023-01-28 06:26:33,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33 WrapperNode [2023-01-28 06:26:33,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 06:26:33,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 06:26:33,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 06:26:33,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 06:26:33,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,833 INFO L138 Inliner]: procedures = 268, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2023-01-28 06:26:33,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 06:26:33,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 06:26:33,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 06:26:33,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 06:26:33,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 06:26:33,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 06:26:33,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 06:26:33,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 06:26:33,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33" (1/1) ... [2023-01-28 06:26:33,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:26:33,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:26:33,914 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 06:26:33,916 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 06:26:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 06:26:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 06:26:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 06:26:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 06:26:33,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 06:26:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 06:26:33,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 06:26:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 06:26:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 06:26:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 06:26:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 06:26:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 06:26:33,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 06:26:33,946 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 06:26:34,088 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 06:26:34,089 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 06:26:34,336 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 06:26:34,342 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 06:26:34,342 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 06:26:34,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:26:34 BoogieIcfgContainer [2023-01-28 06:26:34,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 06:26:34,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 06:26:34,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 06:26:34,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 06:26:34,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:26:33" (1/3) ... [2023-01-28 06:26:34,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5707f2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:26:34, skipping insertion in model container [2023-01-28 06:26:34,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:26:33" (2/3) ... [2023-01-28 06:26:34,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5707f2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:26:34, skipping insertion in model container [2023-01-28 06:26:34,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:26:34" (3/3) ... [2023-01-28 06:26:34,355 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2023-01-28 06:26:34,369 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 06:26:34,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 06:26:34,370 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 06:26:34,471 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 06:26:34,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 103 transitions, 222 flow [2023-01-28 06:26:34,552 INFO L130 PetriNetUnfolder]: 5/101 cut-off events. [2023-01-28 06:26:34,553 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:26:34,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 101 events. 5/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-01-28 06:26:34,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 103 transitions, 222 flow [2023-01-28 06:26:34,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 91 transitions, 194 flow [2023-01-28 06:26:34,565 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 06:26:34,584 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 91 transitions, 194 flow [2023-01-28 06:26:34,586 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 91 transitions, 194 flow [2023-01-28 06:26:34,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 91 transitions, 194 flow [2023-01-28 06:26:34,633 INFO L130 PetriNetUnfolder]: 4/91 cut-off events. [2023-01-28 06:26:34,634 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:26:34,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 4/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-01-28 06:26:34,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 900 [2023-01-28 06:26:38,316 INFO L134 LiptonReduction]: Checked pairs total: 3170 [2023-01-28 06:26:38,316 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-01-28 06:26:38,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 06:26:38,335 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;@5b3fcfc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 06:26:38,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 06:26:38,343 INFO L130 PetriNetUnfolder]: 4/26 cut-off events. [2023-01-28 06:26:38,343 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:26:38,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:26:38,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:26:38,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:26:38,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:26:38,349 INFO L85 PathProgramCache]: Analyzing trace with hash -755552609, now seen corresponding path program 1 times [2023-01-28 06:26:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:26:38,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918239470] [2023-01-28 06:26:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:26:38,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:26:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:26:38,560 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 06:26:38,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:26:38,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918239470] [2023-01-28 06:26:38,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918239470] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:26:38,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:26:38,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:26:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654954463] [2023-01-28 06:26:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:26:38,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 06:26:38,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:26:38,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 06:26:38,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 06:26:38,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 171 [2023-01-28 06:26:38,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 66 flow. Second operand has 2 states, 2 states have (on average 102.5) internal successors, (205), 2 states have internal predecessors, (205), 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 06:26:38,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:26:38,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 171 [2023-01-28 06:26:38,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:26:38,667 INFO L130 PetriNetUnfolder]: 51/126 cut-off events. [2023-01-28 06:26:38,667 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-28 06:26:38,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 126 events. 51/126 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 430 event pairs, 33 based on Foata normal form. 18/127 useless extension candidates. Maximal degree in co-relation 184. Up to 93 conditions per place. [2023-01-28 06:26:38,671 INFO L137 encePairwiseOnDemand]: 169/171 looper letters, 16 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-01-28 06:26:38,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 94 flow [2023-01-28 06:26:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 06:26:38,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 06:26:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 208 transitions. [2023-01-28 06:26:38,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6081871345029239 [2023-01-28 06:26:38,684 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 208 transitions. [2023-01-28 06:26:38,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 208 transitions. [2023-01-28 06:26:38,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:26:38,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 208 transitions. [2023-01-28 06:26:38,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 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 06:26:38,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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 06:26:38,694 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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 06:26:38,695 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 66 flow. Second operand 2 states and 208 transitions. [2023-01-28 06:26:38,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 94 flow [2023-01-28 06:26:38,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 86 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 06:26:38,698 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 54 flow [2023-01-28 06:26:38,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-01-28 06:26:38,703 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-01-28 06:26:38,703 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 54 flow [2023-01-28 06:26:38,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 102.5) internal successors, (205), 2 states have internal predecessors, (205), 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 06:26:38,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:26:38,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:26:38,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 06:26:38,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:26:38,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:26:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1774717252, now seen corresponding path program 1 times [2023-01-28 06:26:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:26:38,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458492693] [2023-01-28 06:26:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:26:38,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:26:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:26:38,869 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 06:26:38,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:26:38,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458492693] [2023-01-28 06:26:38,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458492693] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:26:38,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:26:38,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:26:38,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550278702] [2023-01-28 06:26:38,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:26:38,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:26:38,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:26:38,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:26:38,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:26:38,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 171 [2023-01-28 06:26:38,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 06:26:38,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:26:38,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 171 [2023-01-28 06:26:38,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:26:38,944 INFO L130 PetriNetUnfolder]: 73/141 cut-off events. [2023-01-28 06:26:38,944 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:26:38,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 141 events. 73/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 310 event pairs, 37 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 283. Up to 71 conditions per place. [2023-01-28 06:26:38,947 INFO L137 encePairwiseOnDemand]: 167/171 looper letters, 23 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-01-28 06:26:38,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 106 flow [2023-01-28 06:26:38,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:26:38,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:26:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-01-28 06:26:38,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2023-01-28 06:26:38,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-01-28 06:26:38,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-01-28 06:26:38,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:26:38,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-01-28 06:26:38,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 06:26:38,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 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 06:26:38,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 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 06:26:38,958 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 54 flow. Second operand 3 states and 276 transitions. [2023-01-28 06:26:38,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 26 transitions, 106 flow [2023-01-28 06:26:38,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 06:26:38,959 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 56 flow [2023-01-28 06:26:38,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-01-28 06:26:38,962 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2023-01-28 06:26:38,962 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 56 flow [2023-01-28 06:26:38,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 06:26:38,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:26:38,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:26:38,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 06:26:38,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:26:38,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:26:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash 558202046, now seen corresponding path program 2 times [2023-01-28 06:26:38,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:26:38,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911461387] [2023-01-28 06:26:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:26:38,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:26:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:26:39,146 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 06:26:39,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:26:39,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911461387] [2023-01-28 06:26:39,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911461387] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:26:39,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:26:39,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:26:39,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887919000] [2023-01-28 06:26:39,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:26:39,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:26:39,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:26:39,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:26:39,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:26:39,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-01-28 06:26:39,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 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 06:26:39,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:26:39,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-01-28 06:26:39,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:26:39,239 INFO L130 PetriNetUnfolder]: 57/124 cut-off events. [2023-01-28 06:26:39,239 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:26:39,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 124 events. 57/124 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 291 event pairs, 17 based on Foata normal form. 16/140 useless extension candidates. Maximal degree in co-relation 266. Up to 77 conditions per place. [2023-01-28 06:26:39,244 INFO L137 encePairwiseOnDemand]: 165/171 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-01-28 06:26:39,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 133 flow [2023-01-28 06:26:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 06:26:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 06:26:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2023-01-28 06:26:39,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44590643274853803 [2023-01-28 06:26:39,246 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 305 transitions. [2023-01-28 06:26:39,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 305 transitions. [2023-01-28 06:26:39,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:26:39,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 305 transitions. [2023-01-28 06:26:39,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 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 06:26:39,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 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 06:26:39,250 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 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 06:26:39,250 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 56 flow. Second operand 4 states and 305 transitions. [2023-01-28 06:26:39,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 133 flow [2023-01-28 06:26:39,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 129 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:26:39,252 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 90 flow [2023-01-28 06:26:39,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-01-28 06:26:39,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-01-28 06:26:39,253 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 90 flow [2023-01-28 06:26:39,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 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 06:26:39,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:26:39,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:26:39,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 06:26:39,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:26:39,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:26:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1667954206, now seen corresponding path program 3 times [2023-01-28 06:26:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:26:39,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827325147] [2023-01-28 06:26:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:26:39,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:26:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:26:39,412 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 06:26:39,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:26:39,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827325147] [2023-01-28 06:26:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827325147] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:26:39,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:26:39,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:26:39,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556885973] [2023-01-28 06:26:39,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:26:39,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:26:39,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:26:39,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:26:39,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:26:39,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-01-28 06:26:39,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 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 06:26:39,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:26:39,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-01-28 06:26:39,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:26:39,490 INFO L130 PetriNetUnfolder]: 33/86 cut-off events. [2023-01-28 06:26:39,491 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-01-28 06:26:39,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 86 events. 33/86 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 183 event pairs, 3 based on Foata normal form. 4/90 useless extension candidates. Maximal degree in co-relation 234. Up to 36 conditions per place. [2023-01-28 06:26:39,491 INFO L137 encePairwiseOnDemand]: 163/171 looper letters, 20 selfloop transitions, 11 changer transitions 0/31 dead transitions. [2023-01-28 06:26:39,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 165 flow [2023-01-28 06:26:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 06:26:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 06:26:39,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 373 transitions. [2023-01-28 06:26:39,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43625730994152045 [2023-01-28 06:26:39,493 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 373 transitions. [2023-01-28 06:26:39,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 373 transitions. [2023-01-28 06:26:39,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:26:39,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 373 transitions. [2023-01-28 06:26:39,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 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 06:26:39,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 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 06:26:39,497 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 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 06:26:39,497 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 90 flow. Second operand 5 states and 373 transitions. [2023-01-28 06:26:39,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 165 flow [2023-01-28 06:26:39,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:26:39,499 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 108 flow [2023-01-28 06:26:39,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-01-28 06:26:39,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-01-28 06:26:39,499 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 108 flow [2023-01-28 06:26:39,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 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 06:26:39,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:26:39,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:26:39,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 06:26:39,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:26:39,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:26:39,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1016072132, now seen corresponding path program 4 times [2023-01-28 06:26:39,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:26:39,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137404881] [2023-01-28 06:26:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:26:39,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:26:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:26:39,644 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 06:26:39,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:26:39,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137404881] [2023-01-28 06:26:39,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137404881] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:26:39,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:26:39,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:26:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616635363] [2023-01-28 06:26:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:26:39,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 06:26:39,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:26:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 06:26:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-28 06:26:39,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 171 [2023-01-28 06:26:39,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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 06:26:39,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:26:39,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 171 [2023-01-28 06:26:39,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:26:39,739 INFO L130 PetriNetUnfolder]: 27/76 cut-off events. [2023-01-28 06:26:39,739 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-01-28 06:26:39,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 76 events. 27/76 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 11 based on Foata normal form. 3/77 useless extension candidates. Maximal degree in co-relation 228. Up to 41 conditions per place. [2023-01-28 06:26:39,739 INFO L137 encePairwiseOnDemand]: 163/171 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-01-28 06:26:39,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 27 transitions, 160 flow [2023-01-28 06:26:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:26:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:26:39,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 595 transitions. [2023-01-28 06:26:39,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2023-01-28 06:26:39,742 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 595 transitions. [2023-01-28 06:26:39,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 595 transitions. [2023-01-28 06:26:39,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:26:39,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 595 transitions. [2023-01-28 06:26:39,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 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 06:26:39,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 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 06:26:39,747 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 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 06:26:39,747 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 108 flow. Second operand 7 states and 595 transitions. [2023-01-28 06:26:39,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 27 transitions, 160 flow [2023-01-28 06:26:39,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 122 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-01-28 06:26:39,749 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-01-28 06:26:39,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-01-28 06:26:39,749 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-01-28 06:26:39,749 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-01-28 06:26:39,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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 06:26:39,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 06:26:39,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 06:26:39,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 06:26:39,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 06:26:39,753 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2023-01-28 06:26:39,756 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:26:39,756 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:26:39,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:26:39 BasicIcfg [2023-01-28 06:26:39,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:26:39,760 INFO L158 Benchmark]: Toolchain (without parser) took 6508.25ms. Allocated memory was 354.4MB in the beginning and 425.7MB in the end (delta: 71.3MB). Free memory was 296.7MB in the beginning and 238.1MB in the end (delta: 58.6MB). Peak memory consumption was 131.4MB. Max. memory is 16.0GB. [2023-01-28 06:26:39,760 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:26:39,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.19ms. Allocated memory is still 354.4MB. Free memory was 296.5MB in the beginning and 312.2MB in the end (delta: -15.7MB). Peak memory consumption was 14.3MB. Max. memory is 16.0GB. [2023-01-28 06:26:39,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.03ms. Allocated memory is still 354.4MB. Free memory was 312.2MB in the beginning and 310.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:26:39,761 INFO L158 Benchmark]: Boogie Preprocessor took 39.24ms. Allocated memory is still 354.4MB. Free memory was 310.1MB in the beginning and 308.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:26:39,761 INFO L158 Benchmark]: RCFGBuilder took 469.39ms. Allocated memory is still 354.4MB. Free memory was 308.4MB in the beginning and 292.7MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-28 06:26:39,762 INFO L158 Benchmark]: TraceAbstraction took 5413.76ms. Allocated memory was 354.4MB in the beginning and 425.7MB in the end (delta: 71.3MB). Free memory was 292.2MB in the beginning and 238.1MB in the end (delta: 54.0MB). Peak memory consumption was 125.4MB. Max. memory is 16.0GB. [2023-01-28 06:26:39,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 518.19ms. Allocated memory is still 354.4MB. Free memory was 296.5MB in the beginning and 312.2MB in the end (delta: -15.7MB). Peak memory consumption was 14.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 62.03ms. Allocated memory is still 354.4MB. Free memory was 312.2MB in the beginning and 310.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.24ms. Allocated memory is still 354.4MB. Free memory was 310.1MB in the beginning and 308.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 469.39ms. Allocated memory is still 354.4MB. Free memory was 308.4MB in the beginning and 292.7MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5413.76ms. Allocated memory was 354.4MB in the beginning and 425.7MB in the end (delta: 71.3MB). Free memory was 292.2MB in the beginning and 238.1MB in the end (delta: 54.0MB). Peak memory consumption was 125.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 94 PlacesBefore, 30 PlacesAfterwards, 91 TransitionsBefore, 27 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 7 FixpointIterations, 45 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 68 TotalNumberOfCompositions, 3170 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1580, independent: 1402, independent conditional: 0, independent unconditional: 1402, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 533, independent: 503, independent conditional: 0, independent unconditional: 503, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1580, independent: 899, independent conditional: 0, independent unconditional: 899, dependent: 148, dependent conditional: 0, dependent unconditional: 148, unknown: 533, unknown conditional: 0, unknown unconditional: 533] , Statistics on independence cache: Total cache size (in pairs): 104, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 966]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 129 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 295 IncrementalHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 9 mSDtfsCounter, 295 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 197 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 06:26:39,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...