/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/weaver/popl20-more-mts.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 11:07:22,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 11:07:22,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 11:07:22,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 11:07:22,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 11:07:22,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 11:07:22,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 11:07:22,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 11:07:22,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 11:07:22,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 11:07:22,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 11:07:22,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 11:07:22,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 11:07:22,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 11:07:22,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 11:07:22,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 11:07:22,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 11:07:22,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 11:07:22,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 11:07:22,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 11:07:22,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 11:07:22,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 11:07:22,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 11:07:22,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 11:07:22,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 11:07:22,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 11:07:22,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 11:07:22,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 11:07:22,337 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 11:07:22,358 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 11:07:22,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 11:07:22,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 11:07:22,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 11:07:22,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 11:07:22,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 11:07:22,359 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 11:07:22,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 11:07:22,359 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 11:07:22,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 11:07:22,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 11:07:22,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 11:07:22,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 11:07:22,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 11:07:22,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 11:07:22,360 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 11:07:22,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 11:07:22,360 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 11:07:22,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 11:07:22,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 11:07:22,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 11:07:22,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 11:07:22,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 11:07:22,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:07:22,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 11:07:22,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 11:07:22,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 11:07:22,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 11:07:22,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 11:07:22,365 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 11:07:22,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 11:07:22,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 11:07:22,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 11:07:22,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 11:07:22,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 11:07:22,570 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 11:07:22,572 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 11:07:22,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-01-28 11:07:23,587 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 11:07:23,722 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 11:07:23,722 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-01-28 11:07:23,727 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57d19791/9404b959375b4e5aa628a961ee86eab2/FLAG7a4ebaf73 [2023-01-28 11:07:23,735 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57d19791/9404b959375b4e5aa628a961ee86eab2 [2023-01-28 11:07:23,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 11:07:23,738 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 11:07:23,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 11:07:23,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 11:07:23,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 11:07:23,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:23,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b5d3da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23, skipping insertion in model container [2023-01-28 11:07:23,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:23,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 11:07:23,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 11:07:23,876 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c[2533,2546] [2023-01-28 11:07:23,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:07:23,893 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 11:07:23,919 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c[2533,2546] [2023-01-28 11:07:23,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:07:23,930 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:07:23,930 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:07:23,934 INFO L208 MainTranslator]: Completed translation [2023-01-28 11:07:23,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23 WrapperNode [2023-01-28 11:07:23,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 11:07:23,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 11:07:23,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 11:07:23,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 11:07:23,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:23,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:23,987 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 228 [2023-01-28 11:07:23,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 11:07:23,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 11:07:23,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 11:07:23,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 11:07:24,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:24,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:24,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:24,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:24,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:24,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:24,015 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:24,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:24,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 11:07:24,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 11:07:24,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 11:07:24,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 11:07:24,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23" (1/1) ... [2023-01-28 11:07:24,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:07:24,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:07:24,061 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 11:07:24,068 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 11:07:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 11:07:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 11:07:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 11:07:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 11:07:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 11:07:24,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 11:07:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 11:07:24,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 11:07:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 11:07:24,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 11:07:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 11:07:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 11:07:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 11:07:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 11:07:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 11:07:24,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 11:07:24,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 11:07:24,111 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 11:07:24,211 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 11:07:24,213 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 11:07:24,494 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 11:07:24,614 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 11:07:24,615 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 11:07:24,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:07:24 BoogieIcfgContainer [2023-01-28 11:07:24,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 11:07:24,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 11:07:24,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 11:07:24,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 11:07:24,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 11:07:23" (1/3) ... [2023-01-28 11:07:24,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b04fd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:07:24, skipping insertion in model container [2023-01-28 11:07:24,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:07:23" (2/3) ... [2023-01-28 11:07:24,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b04fd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:07:24, skipping insertion in model container [2023-01-28 11:07:24,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:07:24" (3/3) ... [2023-01-28 11:07:24,623 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2023-01-28 11:07:24,633 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 11:07:24,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 11:07:24,634 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 11:07:24,698 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 11:07:24,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 206 transitions, 436 flow [2023-01-28 11:07:24,820 INFO L130 PetriNetUnfolder]: 18/203 cut-off events. [2023-01-28 11:07:24,821 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:07:24,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 203 events. 18/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 295 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-01-28 11:07:24,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 206 transitions, 436 flow [2023-01-28 11:07:24,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 193 transitions, 404 flow [2023-01-28 11:07:24,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 11:07:24,853 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 193 transitions, 404 flow [2023-01-28 11:07:24,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 193 transitions, 404 flow [2023-01-28 11:07:24,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 193 transitions, 404 flow [2023-01-28 11:07:24,885 INFO L130 PetriNetUnfolder]: 18/193 cut-off events. [2023-01-28 11:07:24,885 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:07:24,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 193 events. 18/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-01-28 11:07:24,889 INFO L119 LiptonReduction]: Number of co-enabled transitions 7140 [2023-01-28 11:07:29,493 INFO L134 LiptonReduction]: Checked pairs total: 7215 [2023-01-28 11:07:29,493 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-01-28 11:07:29,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 11:07:29,506 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;@51697f5b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 11:07:29,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 11:07:29,510 INFO L130 PetriNetUnfolder]: 4/25 cut-off events. [2023-01-28 11:07:29,510 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:07:29,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:07:29,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:07:29,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:07:29,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:07:29,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1770190697, now seen corresponding path program 1 times [2023-01-28 11:07:29,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:07:29,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145938373] [2023-01-28 11:07:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:07:29,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:07:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:07:29,825 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 11:07:29,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:07:29,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145938373] [2023-01-28 11:07:29,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145938373] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:07:29,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:07:29,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 11:07:29,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515893566] [2023-01-28 11:07:29,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:07:29,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 11:07:29,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:07:29,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 11:07:29,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 11:07:29,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 415 [2023-01-28 11:07:29,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 11:07:29,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:07:29,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 415 [2023-01-28 11:07:29,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:07:29,942 INFO L130 PetriNetUnfolder]: 429/600 cut-off events. [2023-01-28 11:07:29,942 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-01-28 11:07:29,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 600 events. 429/600 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1989 event pairs, 246 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 1042. Up to 596 conditions per place. [2023-01-28 11:07:29,946 INFO L137 encePairwiseOnDemand]: 412/415 looper letters, 23 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-01-28 11:07:29,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 122 flow [2023-01-28 11:07:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 11:07:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 11:07:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-01-28 11:07:29,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41124497991967873 [2023-01-28 11:07:29,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-01-28 11:07:29,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-01-28 11:07:29,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:07:29,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-01-28 11:07:29,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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 11:07:29,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 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 11:07:29,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 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 11:07:29,970 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 70 flow. Second operand 3 states and 512 transitions. [2023-01-28 11:07:29,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 122 flow [2023-01-28 11:07:29,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 11:07:29,974 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 70 flow [2023-01-28 11:07:29,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-01-28 11:07:29,977 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-01-28 11:07:29,977 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 70 flow [2023-01-28 11:07:29,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 11:07:29,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:07:29,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:07:29,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 11:07:29,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:07:29,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:07:29,979 INFO L85 PathProgramCache]: Analyzing trace with hash 489192056, now seen corresponding path program 1 times [2023-01-28 11:07:29,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:07:29,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062964013] [2023-01-28 11:07:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:07:29,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:07:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:07:30,133 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 11:07:30,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:07:30,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062964013] [2023-01-28 11:07:30,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062964013] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:07:30,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787060089] [2023-01-28 11:07:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:07:30,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:07:30,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:07:30,142 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 11:07:30,160 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 11:07:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:07:30,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 11:07:30,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:07:30,342 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 11:07:30,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:07:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:07:30,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787060089] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:07:30,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:07:30,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-01-28 11:07:30,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505052162] [2023-01-28 11:07:30,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:07:30,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:07:30,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:07:30,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:07:30,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 11:07:30,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 415 [2023-01-28 11:07:30,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 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 11:07:30,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:07:30,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 415 [2023-01-28 11:07:30,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:07:30,489 INFO L130 PetriNetUnfolder]: 499/704 cut-off events. [2023-01-28 11:07:30,489 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 11:07:30,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 704 events. 499/704 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2415 event pairs, 124 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 1421. Up to 410 conditions per place. [2023-01-28 11:07:30,492 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 31 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-01-28 11:07:30,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 166 flow [2023-01-28 11:07:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:07:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:07:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 847 transitions. [2023-01-28 11:07:30,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081927710843373 [2023-01-28 11:07:30,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 847 transitions. [2023-01-28 11:07:30,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 847 transitions. [2023-01-28 11:07:30,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:07:30,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 847 transitions. [2023-01-28 11:07:30,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.4) internal successors, (847), 5 states have internal predecessors, (847), 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 11:07:30,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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 11:07:30,500 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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 11:07:30,500 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 70 flow. Second operand 5 states and 847 transitions. [2023-01-28 11:07:30,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 166 flow [2023-01-28 11:07:30,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 162 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 11:07:30,501 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 89 flow [2023-01-28 11:07:30,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-01-28 11:07:30,501 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-01-28 11:07:30,502 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 89 flow [2023-01-28 11:07:30,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 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 11:07:30,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:07:30,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:07:30,509 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 11:07:30,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:07:30,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:07:30,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:07:30,710 INFO L85 PathProgramCache]: Analyzing trace with hash -96618323, now seen corresponding path program 1 times [2023-01-28 11:07:30,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:07:30,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101283158] [2023-01-28 11:07:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:07:30,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:07:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:07:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:07:30,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:07:30,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101283158] [2023-01-28 11:07:30,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101283158] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:07:30,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000155108] [2023-01-28 11:07:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:07:30,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:07:30,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:07:30,835 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 11:07:30,889 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 11:07:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:07:30,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 11:07:30,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:07:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:07:31,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:07:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:07:31,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000155108] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:07:31,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:07:31,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-01-28 11:07:31,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629052020] [2023-01-28 11:07:31,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:07:31,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 11:07:31,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:07:31,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 11:07:31,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-01-28 11:07:31,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 415 [2023-01-28 11:07:31,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 89 flow. Second operand has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 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 11:07:31,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:07:31,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 415 [2023-01-28 11:07:31,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:07:31,241 INFO L130 PetriNetUnfolder]: 698/1018 cut-off events. [2023-01-28 11:07:31,241 INFO L131 PetriNetUnfolder]: For 503/625 co-relation queries the response was YES. [2023-01-28 11:07:31,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2449 conditions, 1018 events. 698/1018 cut-off events. For 503/625 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3841 event pairs, 183 based on Foata normal form. 122/979 useless extension candidates. Maximal degree in co-relation 2430. Up to 430 conditions per place. [2023-01-28 11:07:31,259 INFO L137 encePairwiseOnDemand]: 406/415 looper letters, 58 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2023-01-28 11:07:31,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 72 transitions, 363 flow [2023-01-28 11:07:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 11:07:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 11:07:31,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1309 transitions. [2023-01-28 11:07:31,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942771084337349 [2023-01-28 11:07:31,263 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1309 transitions. [2023-01-28 11:07:31,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1309 transitions. [2023-01-28 11:07:31,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:07:31,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1309 transitions. [2023-01-28 11:07:31,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 163.625) internal successors, (1309), 8 states have internal predecessors, (1309), 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 11:07:31,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 415.0) internal successors, (3735), 9 states have internal predecessors, (3735), 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 11:07:31,270 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 415.0) internal successors, (3735), 9 states have internal predecessors, (3735), 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 11:07:31,270 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 89 flow. Second operand 8 states and 1309 transitions. [2023-01-28 11:07:31,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 72 transitions, 363 flow [2023-01-28 11:07:31,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 72 transitions, 351 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 11:07:31,273 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 151 flow [2023-01-28 11:07:31,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=151, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-01-28 11:07:31,274 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-01-28 11:07:31,274 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 151 flow [2023-01-28 11:07:31,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 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 11:07:31,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:07:31,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:07:31,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 11:07:31,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-28 11:07:31,480 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:07:31,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:07:31,480 INFO L85 PathProgramCache]: Analyzing trace with hash -764145909, now seen corresponding path program 1 times [2023-01-28 11:07:31,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:07:31,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967475158] [2023-01-28 11:07:31,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:07:31,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:07:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:07:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:07:32,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:07:32,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967475158] [2023-01-28 11:07:32,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967475158] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:07:32,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511995134] [2023-01-28 11:07:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:07:32,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:07:32,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:07:32,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:07:32,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 11:07:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:07:32,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 72 conjunts are in the unsatisfiable core [2023-01-28 11:07:32,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:07:33,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 11:07:33,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 11:07:33,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:07:33,253 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 11:07:33,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:07:33,412 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 50 treesize of output 44 [2023-01-28 11:07:33,566 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:33,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 56 [2023-01-28 11:07:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:07:33,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:07:34,548 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~sum~0 c_~mts2~0))) (and (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse0 (+ c_~mts3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4)))))) (or (= c_~mts1~0 .cse0) (<= c_~N~0 ~M~0) (< .cse0 0) (< (+ ~M~0 1) c_~N~0)))) (< c_~mts3~0 .cse1)) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (= c_~mts1~0 (+ c_~sum~0 .cse2 c_~mts2~0)) (<= c_~N~0 ~M~0) (< (+ c_~mts3~0 .cse2) 0) (< (+ ~M~0 1) c_~N~0)))) (<= .cse1 c_~mts3~0)) (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse3 (+ c_~sum~0 .cse4 c_~mts2~0))) (or (= c_~mts1~0 .cse3) (<= 0 (+ c_~mts3~0 .cse4)) (<= c_~N~0 ~M~0) (<= .cse3 0) (< (+ ~M~0 1) c_~N~0))))) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (<= 0 (+ c_~mts3~0 .cse5)) (< 0 (+ c_~sum~0 .cse5 c_~mts2~0)) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0)))) (= c_~mts1~0 0)))) is different from false [2023-01-28 11:07:46,822 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:46,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 97 [2023-01-28 11:07:46,843 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:46,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2942 treesize of output 2806 [2023-01-28 11:07:46,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:46,888 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 200 treesize of output 190 [2023-01-28 11:07:46,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:46,906 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 167 treesize of output 147 [2023-01-28 11:07:46,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 113 [2023-01-28 11:07:47,456 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:47,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 82 [2023-01-28 11:07:47,461 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:07:47,462 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:07:47,474 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:47,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 99 [2023-01-28 11:07:47,492 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:47,492 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 54 treesize of output 42 [2023-01-28 11:07:47,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:47,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 60 [2023-01-28 11:07:47,517 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:07:47,517 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:07:47,524 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:47,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 74 [2023-01-28 11:07:47,538 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:47,538 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 39 treesize of output 33 [2023-01-28 11:07:47,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:47,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 83 [2023-01-28 11:07:47,570 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:07:47,570 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:07:47,577 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:47,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 101 [2023-01-28 11:07:47,602 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:47,602 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 55 treesize of output 43 [2023-01-28 11:07:47,625 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:47,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2023-01-28 11:07:47,631 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:07:47,632 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:07:47,640 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:47,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 149 [2023-01-28 11:07:47,654 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:47,654 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 58 treesize of output 44 [2023-01-28 11:07:47,695 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:47,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 93 [2023-01-28 11:07:47,700 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:07:47,701 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:07:47,709 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:47,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 145 [2023-01-28 11:07:47,723 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:47,723 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 57 treesize of output 43 [2023-01-28 11:07:47,762 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:47,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 117 [2023-01-28 11:07:47,768 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:07:47,768 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:07:47,776 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:47,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 176 [2023-01-28 11:07:47,810 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:47,811 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 74 treesize of output 54 [2023-01-28 11:07:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:07:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511995134] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:07:47,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:07:47,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 32 [2023-01-28 11:07:47,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692627549] [2023-01-28 11:07:47,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:07:47,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 11:07:47,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:07:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 11:07:47,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=863, Unknown=4, NotChecked=62, Total=1122 [2023-01-28 11:07:47,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 415 [2023-01-28 11:07:47,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 151 flow. Second operand has 34 states, 34 states have (on average 120.02941176470588) internal successors, (4081), 34 states have internal predecessors, (4081), 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 11:07:47,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:07:47,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 415 [2023-01-28 11:07:47,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:07:49,951 INFO L130 PetriNetUnfolder]: 1406/2083 cut-off events. [2023-01-28 11:07:49,951 INFO L131 PetriNetUnfolder]: For 1980/2058 co-relation queries the response was YES. [2023-01-28 11:07:49,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6446 conditions, 2083 events. 1406/2083 cut-off events. For 1980/2058 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9413 event pairs, 171 based on Foata normal form. 79/2066 useless extension candidates. Maximal degree in co-relation 5714. Up to 1166 conditions per place. [2023-01-28 11:07:49,959 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 112 selfloop transitions, 40 changer transitions 3/157 dead transitions. [2023-01-28 11:07:49,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 157 transitions, 943 flow [2023-01-28 11:07:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 11:07:49,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 11:07:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1666 transitions. [2023-01-28 11:07:49,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3088044485634847 [2023-01-28 11:07:49,963 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1666 transitions. [2023-01-28 11:07:49,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1666 transitions. [2023-01-28 11:07:49,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:07:49,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1666 transitions. [2023-01-28 11:07:49,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 128.15384615384616) internal successors, (1666), 13 states have internal predecessors, (1666), 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 11:07:49,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 415.0) internal successors, (5810), 14 states have internal predecessors, (5810), 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 11:07:49,971 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 415.0) internal successors, (5810), 14 states have internal predecessors, (5810), 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 11:07:49,971 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 151 flow. Second operand 13 states and 1666 transitions. [2023-01-28 11:07:49,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 157 transitions, 943 flow [2023-01-28 11:07:49,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 157 transitions, 916 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-01-28 11:07:49,977 INFO L231 Difference]: Finished difference. Result has 57 places, 71 transitions, 446 flow [2023-01-28 11:07:49,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=446, PETRI_PLACES=57, PETRI_TRANSITIONS=71} [2023-01-28 11:07:49,977 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2023-01-28 11:07:49,978 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 71 transitions, 446 flow [2023-01-28 11:07:49,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 120.02941176470588) internal successors, (4081), 34 states have internal predecessors, (4081), 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 11:07:49,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:07:49,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:07:49,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 11:07:50,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:07:50,183 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:07:50,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:07:50,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1577393381, now seen corresponding path program 2 times [2023-01-28 11:07:50,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:07:50,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489639463] [2023-01-28 11:07:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:07:50,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:07:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:07:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:07:51,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:07:51,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489639463] [2023-01-28 11:07:51,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489639463] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:07:51,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643601964] [2023-01-28 11:07:51,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 11:07:51,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:07:51,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:07:51,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:07:51,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 11:07:51,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 11:07:51,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:07:51,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 48 conjunts are in the unsatisfiable core [2023-01-28 11:07:51,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:07:51,738 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:51,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 111 [2023-01-28 11:07:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:07:52,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:07:52,877 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:52,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 65 [2023-01-28 11:07:52,928 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:07:52,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 52 [2023-01-28 11:07:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:07:53,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643601964] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:07:53,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:07:53,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 32 [2023-01-28 11:07:53,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501360195] [2023-01-28 11:07:53,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:07:53,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 11:07:53,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:07:53,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 11:07:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2023-01-28 11:07:53,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 415 [2023-01-28 11:07:53,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 71 transitions, 446 flow. Second operand has 34 states, 34 states have (on average 123.11764705882354) internal successors, (4186), 34 states have internal predecessors, (4186), 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 11:07:53,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:07:53,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 415 [2023-01-28 11:07:53,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:07:54,797 INFO L130 PetriNetUnfolder]: 1672/2503 cut-off events. [2023-01-28 11:07:54,797 INFO L131 PetriNetUnfolder]: For 4153/4153 co-relation queries the response was YES. [2023-01-28 11:07:54,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9012 conditions, 2503 events. 1672/2503 cut-off events. For 4153/4153 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10816 event pairs, 295 based on Foata normal form. 1/2504 useless extension candidates. Maximal degree in co-relation 8516. Up to 1996 conditions per place. [2023-01-28 11:07:54,810 INFO L137 encePairwiseOnDemand]: 402/415 looper letters, 103 selfloop transitions, 71 changer transitions 6/180 dead transitions. [2023-01-28 11:07:54,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 180 transitions, 1342 flow [2023-01-28 11:07:54,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 11:07:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 11:07:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2049 transitions. [2023-01-28 11:07:54,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3085843373493976 [2023-01-28 11:07:54,818 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2049 transitions. [2023-01-28 11:07:54,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2049 transitions. [2023-01-28 11:07:54,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:07:54,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2049 transitions. [2023-01-28 11:07:54,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 128.0625) internal successors, (2049), 16 states have internal predecessors, (2049), 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 11:07:54,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 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 11:07:54,830 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 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 11:07:54,830 INFO L175 Difference]: Start difference. First operand has 57 places, 71 transitions, 446 flow. Second operand 16 states and 2049 transitions. [2023-01-28 11:07:54,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 180 transitions, 1342 flow [2023-01-28 11:07:54,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 180 transitions, 1315 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-28 11:07:54,840 INFO L231 Difference]: Finished difference. Result has 79 places, 120 transitions, 987 flow [2023-01-28 11:07:54,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=987, PETRI_PLACES=79, PETRI_TRANSITIONS=120} [2023-01-28 11:07:54,842 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 47 predicate places. [2023-01-28 11:07:54,842 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 120 transitions, 987 flow [2023-01-28 11:07:54,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 123.11764705882354) internal successors, (4186), 34 states have internal predecessors, (4186), 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 11:07:54,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:07:54,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:07:54,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 11:07:55,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:07:55,049 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:07:55,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:07:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash 717847813, now seen corresponding path program 3 times [2023-01-28 11:07:55,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:07:55,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342861686] [2023-01-28 11:07:55,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:07:55,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:07:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:07:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:07:56,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:07:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342861686] [2023-01-28 11:07:56,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342861686] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:07:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083334293] [2023-01-28 11:07:56,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 11:07:56,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:07:56,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:07:56,181 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:07:56,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 11:07:56,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 11:07:56,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:07:56,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 67 conjunts are in the unsatisfiable core [2023-01-28 11:07:56,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:07:56,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:07:56,565 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 11:07:56,966 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:56,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 111 [2023-01-28 11:07:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:07:57,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:07:59,754 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:07:59,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 148 treesize of output 132 [2023-01-28 11:07:59,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 90 [2023-01-28 11:07:59,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 78 [2023-01-28 11:08:00,027 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:00,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 724 treesize of output 708 [2023-01-28 11:08:00,061 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:00,061 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 529 treesize of output 520 [2023-01-28 11:08:00,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:00,093 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 511 treesize of output 502 [2023-01-28 11:08:00,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:00,126 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 493 treesize of output 484 [2023-01-28 11:08:00,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:00,161 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 475 treesize of output 460 [2023-01-28 11:08:00,203 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:00,203 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 451 treesize of output 442 [2023-01-28 11:08:00,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:00,258 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 433 treesize of output 412 [2023-01-28 11:08:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:08:12,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083334293] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:08:12,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:08:12,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 37 [2023-01-28 11:08:12,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732228112] [2023-01-28 11:08:12,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:08:12,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-01-28 11:08:12,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:08:12,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-01-28 11:08:12,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1242, Unknown=3, NotChecked=0, Total=1482 [2023-01-28 11:08:12,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 415 [2023-01-28 11:08:12,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 120 transitions, 987 flow. Second operand has 39 states, 39 states have (on average 112.84615384615384) internal successors, (4401), 39 states have internal predecessors, (4401), 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 11:08:12,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:08:12,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 415 [2023-01-28 11:08:12,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:08:19,855 INFO L130 PetriNetUnfolder]: 2511/3780 cut-off events. [2023-01-28 11:08:19,855 INFO L131 PetriNetUnfolder]: For 11506/11506 co-relation queries the response was YES. [2023-01-28 11:08:19,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16403 conditions, 3780 events. 2511/3780 cut-off events. For 11506/11506 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18189 event pairs, 321 based on Foata normal form. 2/3782 useless extension candidates. Maximal degree in co-relation 16116. Up to 2512 conditions per place. [2023-01-28 11:08:19,873 INFO L137 encePairwiseOnDemand]: 399/415 looper letters, 218 selfloop transitions, 233 changer transitions 9/460 dead transitions. [2023-01-28 11:08:19,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 460 transitions, 4074 flow [2023-01-28 11:08:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-28 11:08:19,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-28 11:08:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4641 transitions. [2023-01-28 11:08:19,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28674698795180725 [2023-01-28 11:08:19,883 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4641 transitions. [2023-01-28 11:08:19,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4641 transitions. [2023-01-28 11:08:19,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:08:19,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4641 transitions. [2023-01-28 11:08:19,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 119.0) internal successors, (4641), 39 states have internal predecessors, (4641), 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 11:08:19,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 415.0) internal successors, (16600), 40 states have internal predecessors, (16600), 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 11:08:19,914 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 415.0) internal successors, (16600), 40 states have internal predecessors, (16600), 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 11:08:19,914 INFO L175 Difference]: Start difference. First operand has 79 places, 120 transitions, 987 flow. Second operand 39 states and 4641 transitions. [2023-01-28 11:08:19,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 460 transitions, 4074 flow [2023-01-28 11:08:19,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 460 transitions, 4045 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-28 11:08:19,939 INFO L231 Difference]: Finished difference. Result has 138 places, 309 transitions, 3369 flow [2023-01-28 11:08:19,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3369, PETRI_PLACES=138, PETRI_TRANSITIONS=309} [2023-01-28 11:08:19,939 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2023-01-28 11:08:19,939 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 309 transitions, 3369 flow [2023-01-28 11:08:19,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 112.84615384615384) internal successors, (4401), 39 states have internal predecessors, (4401), 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 11:08:19,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:08:19,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:08:19,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 11:08:20,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:08:20,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:08:20,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:08:20,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1798671641, now seen corresponding path program 4 times [2023-01-28 11:08:20,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:08:20,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244974155] [2023-01-28 11:08:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:08:20,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:08:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:08:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:08:21,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:08:21,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244974155] [2023-01-28 11:08:21,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244974155] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:08:21,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046252496] [2023-01-28 11:08:21,124 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 11:08:21,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:08:21,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:08:21,125 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:08:21,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 11:08:21,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 11:08:21,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:08:21,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 11:08:21,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:08:21,729 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 11:08:21,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 99 [2023-01-28 11:08:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:08:21,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:08:22,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:22,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 72 [2023-01-28 11:08:22,602 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:08:22,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 222 treesize of output 98 [2023-01-28 11:08:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:08:23,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046252496] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:08:23,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:08:23,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 34 [2023-01-28 11:08:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862588084] [2023-01-28 11:08:23,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:08:23,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-01-28 11:08:23,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:08:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-01-28 11:08:23,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2023-01-28 11:08:23,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 415 [2023-01-28 11:08:23,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 309 transitions, 3369 flow. Second operand has 36 states, 36 states have (on average 113.0) internal successors, (4068), 36 states have internal predecessors, (4068), 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 11:08:23,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:08:23,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 415 [2023-01-28 11:08:23,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:08:24,597 INFO L130 PetriNetUnfolder]: 2783/4198 cut-off events. [2023-01-28 11:08:24,597 INFO L131 PetriNetUnfolder]: For 26469/26469 co-relation queries the response was YES. [2023-01-28 11:08:24,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23647 conditions, 4198 events. 2783/4198 cut-off events. For 26469/26469 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20583 event pairs, 395 based on Foata normal form. 2/4200 useless extension candidates. Maximal degree in co-relation 23292. Up to 3056 conditions per place. [2023-01-28 11:08:24,627 INFO L137 encePairwiseOnDemand]: 400/415 looper letters, 178 selfloop transitions, 284 changer transitions 6/468 dead transitions. [2023-01-28 11:08:24,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 468 transitions, 5900 flow [2023-01-28 11:08:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 11:08:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 11:08:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1890 transitions. [2023-01-28 11:08:24,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28463855421686746 [2023-01-28 11:08:24,632 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1890 transitions. [2023-01-28 11:08:24,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1890 transitions. [2023-01-28 11:08:24,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:08:24,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1890 transitions. [2023-01-28 11:08:24,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.125) internal successors, (1890), 16 states have internal predecessors, (1890), 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 11:08:24,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 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 11:08:24,644 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 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 11:08:24,644 INFO L175 Difference]: Start difference. First operand has 138 places, 309 transitions, 3369 flow. Second operand 16 states and 1890 transitions. [2023-01-28 11:08:24,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 468 transitions, 5900 flow [2023-01-28 11:08:24,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 468 transitions, 5366 flow, removed 136 selfloop flow, removed 12 redundant places. [2023-01-28 11:08:24,766 INFO L231 Difference]: Finished difference. Result has 151 places, 410 transitions, 5062 flow [2023-01-28 11:08:24,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5062, PETRI_PLACES=151, PETRI_TRANSITIONS=410} [2023-01-28 11:08:24,767 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2023-01-28 11:08:24,767 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 410 transitions, 5062 flow [2023-01-28 11:08:24,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 113.0) internal successors, (4068), 36 states have internal predecessors, (4068), 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 11:08:24,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:08:24,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:08:24,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 11:08:24,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:08:24,969 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:08:24,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:08:24,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1817816611, now seen corresponding path program 5 times [2023-01-28 11:08:24,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:08:24,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566137069] [2023-01-28 11:08:24,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:08:24,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:08:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:08:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:08:25,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:08:25,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566137069] [2023-01-28 11:08:25,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566137069] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:08:25,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851285518] [2023-01-28 11:08:25,862 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 11:08:25,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:08:25,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:08:25,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:08:25,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 11:08:25,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 11:08:25,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:08:25,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-28 11:08:25,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:08:26,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:08:26,145 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 11:08:26,517 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 11:08:26,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 99 [2023-01-28 11:08:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:08:26,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:08:28,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:28,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 750 treesize of output 767 [2023-01-28 11:08:28,857 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:28,857 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 542 treesize of output 533 [2023-01-28 11:08:28,893 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:28,893 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 524 treesize of output 515 [2023-01-28 11:08:28,929 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:28,929 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 506 treesize of output 491 [2023-01-28 11:08:28,965 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:08:28,966 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 482 treesize of output 473 [2023-01-28 11:08:29,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 464 treesize of output 458 [2023-01-28 11:08:29,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 458 treesize of output 446 [2023-01-28 11:08:29,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 446 treesize of output 434 [2023-01-28 11:08:56,974 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 11:09:32,776 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 11:09:56,796 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 11:10:11,221 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 11:10:49,954 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 11:11:13,564 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 11:13:55,237 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 11:17:28,681 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 11:19:08,279 WARN L222 SmtUtils]: Spent 12.65s on a formula simplification. DAG size of input: 1984 DAG size of output: 2011 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 11:21:31,292 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:21:31,297 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:21:31,297 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 11:21:31,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 11:21:31,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:31,502 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-53-34-20-17-17-12-19-12-17-9-7-6-1 context. [2023-01-28 11:21:31,505 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 11:21:31,505 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 11:21:31,505 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 11:21:31,505 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2023-01-28 11:21:31,508 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 11:21:31,508 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 11:21:31,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 11:21:31 BasicIcfg [2023-01-28 11:21:31,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 11:21:31,510 INFO L158 Benchmark]: Toolchain (without parser) took 847772.22ms. Allocated memory was 360.7MB in the beginning and 1.1GB in the end (delta: 725.6MB). Free memory was 307.4MB in the beginning and 705.7MB in the end (delta: -398.4MB). Peak memory consumption was 656.7MB. Max. memory is 16.0GB. [2023-01-28 11:21:31,510 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory was 212.6MB in the beginning and 212.4MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 11:21:31,510 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.70ms. Allocated memory is still 360.7MB. Free memory was 307.2MB in the beginning and 295.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 11:21:31,510 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.87ms. Allocated memory is still 360.7MB. Free memory was 295.3MB in the beginning and 337.0MB in the end (delta: -41.8MB). Peak memory consumption was 8.0MB. Max. memory is 16.0GB. [2023-01-28 11:21:31,511 INFO L158 Benchmark]: Boogie Preprocessor took 46.98ms. Allocated memory is still 360.7MB. Free memory was 337.0MB in the beginning and 334.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 11:21:31,511 INFO L158 Benchmark]: RCFGBuilder took 582.60ms. Allocated memory is still 360.7MB. Free memory was 334.9MB in the beginning and 297.6MB in the end (delta: 37.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. [2023-01-28 11:21:31,511 INFO L158 Benchmark]: TraceAbstraction took 846890.54ms. Allocated memory was 360.7MB in the beginning and 1.1GB in the end (delta: 725.6MB). Free memory was 297.1MB in the beginning and 705.7MB in the end (delta: -408.6MB). Peak memory consumption was 644.6MB. Max. memory is 16.0GB. [2023-01-28 11:21:31,512 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 was 212.6MB in the beginning and 212.4MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 189.70ms. Allocated memory is still 360.7MB. Free memory was 307.2MB in the beginning and 295.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.87ms. Allocated memory is still 360.7MB. Free memory was 295.3MB in the beginning and 337.0MB in the end (delta: -41.8MB). Peak memory consumption was 8.0MB. Max. memory is 16.0GB. * Boogie Preprocessor took 46.98ms. Allocated memory is still 360.7MB. Free memory was 337.0MB in the beginning and 334.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 582.60ms. Allocated memory is still 360.7MB. Free memory was 334.9MB in the beginning and 297.6MB in the end (delta: 37.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. * TraceAbstraction took 846890.54ms. Allocated memory was 360.7MB in the beginning and 1.1GB in the end (delta: 725.6MB). Free memory was 297.1MB in the beginning and 705.7MB in the end (delta: -408.6MB). Peak memory consumption was 644.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 185 PlacesBefore, 32 PlacesAfterwards, 193 TransitionsBefore, 26 TransitionsAfterwards, 7140 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 28 ConcurrentYvCompositions, 14 ChoiceCompositions, 209 TotalNumberOfCompositions, 7215 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6742, independent: 6707, independent conditional: 0, independent unconditional: 6707, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4193, independent: 4170, independent conditional: 0, independent unconditional: 4170, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6742, independent: 2537, independent conditional: 0, independent unconditional: 2537, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 4193, unknown conditional: 0, unknown unconditional: 4193] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-53-34-20-17-17-12-19-12-17-9-7-6-1 context. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-53-34-20-17-17-12-19-12-17-9-7-6-1 context. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-53-34-20-17-17-12-19-12-17-9-7-6-1 context. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-53-34-20-17-17-12-19-12-17-9-7-6-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 273 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 846.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1022 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1022 mSDsluCounter, 306 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 128 IncrementalHoareTripleChecker+Unchecked, 270 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5702 IncrementalHoareTripleChecker+Invalid, 5886 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 36 mSDtfsCounter, 5702 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 170 SyntacticMatches, 5 SemanticMatches, 216 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 21.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5062occurred in iteration=7, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 40.2s InterpolantComputationTime, 300 NumberOfCodeBlocks, 300 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 421 ConstructedInterpolants, 20 QuantifiedInterpolants, 16359 SizeOfPredicates, 140 NumberOfNonLiveVariables, 1455 ConjunctsInSsa, 257 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 7/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown