/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 19:53:05,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 19:53:05,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 19:53:05,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 19:53:05,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 19:53:05,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 19:53:05,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 19:53:05,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 19:53:05,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 19:53:05,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 19:53:05,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 19:53:05,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 19:53:05,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 19:53:05,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 19:53:05,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 19:53:05,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 19:53:05,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 19:53:05,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 19:53:05,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 19:53:05,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 19:53:05,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 19:53:05,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 19:53:05,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 19:53:05,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 19:53:05,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 19:53:05,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 19:53:05,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 19:53:05,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 19:53:05,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 19:53:05,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 19:53:05,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 19:53:05,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 19:53:05,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 19:53:05,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 19:53:05,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 19:53:05,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 19:53:05,527 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-NoLbe.epf [2022-12-05 19:53:05,552 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 19:53:05,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 19:53:05,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 19:53:05,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 19:53:05,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 19:53:05,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 19:53:05,554 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 19:53:05,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 19:53:05,554 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 19:53:05,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 19:53:05,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 19:53:05,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 19:53:05,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 19:53:05,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 19:53:05,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 19:53:05,555 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 19:53:05,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 19:53:05,555 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 19:53:05,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 19:53:05,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 19:53:05,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 19:53:05,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 19:53:05,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 19:53:05,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:53:05,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 19:53:05,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 19:53:05,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 19:53:05,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 19:53:05,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 19:53:05,557 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 19:53:05,557 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 19:53:05,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 19:53:05,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 19:53:05,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 19:53:05,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 19:53:05,830 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 19:53:05,831 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 19:53:05,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2022-12-05 19:53:06,742 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 19:53:06,997 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 19:53:06,998 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2022-12-05 19:53:07,008 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5fe3951f/21419ecc2d4b468abb9237c2c18d605e/FLAG0c355bc38 [2022-12-05 19:53:07,020 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5fe3951f/21419ecc2d4b468abb9237c2c18d605e [2022-12-05 19:53:07,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 19:53:07,023 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 19:53:07,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 19:53:07,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 19:53:07,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 19:53:07,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733a2b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07, skipping insertion in model container [2022-12-05 19:53:07,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 19:53:07,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 19:53:07,448 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-12-05 19:53:07,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:53:07,472 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 19:53:07,517 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-12-05 19:53:07,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:53:07,567 INFO L208 MainTranslator]: Completed translation [2022-12-05 19:53:07,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07 WrapperNode [2022-12-05 19:53:07,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 19:53:07,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 19:53:07,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 19:53:07,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 19:53:07,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,622 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-12-05 19:53:07,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 19:53:07,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 19:53:07,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 19:53:07,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 19:53:07,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,659 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 19:53:07,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 19:53:07,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 19:53:07,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 19:53:07,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07" (1/1) ... [2022-12-05 19:53:07,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:53:07,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:07,691 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) [2022-12-05 19:53:07,709 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 [2022-12-05 19:53:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 19:53:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 19:53:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-05 19:53:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 19:53:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 19:53:07,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 19:53:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 19:53:07,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 19:53:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 19:53:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 19:53:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 19:53:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 19:53:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 19:53:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 19:53:07,727 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 19:53:07,869 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 19:53:07,870 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 19:53:08,033 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 19:53:08,038 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 19:53:08,038 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-05 19:53:08,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:53:08 BoogieIcfgContainer [2022-12-05 19:53:08,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 19:53:08,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 19:53:08,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 19:53:08,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 19:53:08,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 07:53:07" (1/3) ... [2022-12-05 19:53:08,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c92b067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:53:08, skipping insertion in model container [2022-12-05 19:53:08,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:07" (2/3) ... [2022-12-05 19:53:08,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c92b067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:53:08, skipping insertion in model container [2022-12-05 19:53:08,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:53:08" (3/3) ... [2022-12-05 19:53:08,048 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2022-12-05 19:53:08,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 19:53:08,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 19:53:08,061 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 19:53:08,122 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 19:53:08,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 131 transitions, 278 flow [2022-12-05 19:53:08,220 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2022-12-05 19:53:08,221 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 19:53:08,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 10/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 82. Up to 3 conditions per place. [2022-12-05 19:53:08,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 131 transitions, 278 flow [2022-12-05 19:53:08,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 118 transitions, 248 flow [2022-12-05 19:53:08,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 19:53:08,247 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;@169f3781, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 19:53:08,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-05 19:53:08,284 INFO L130 PetriNetUnfolder]: 8/117 cut-off events. [2022-12-05 19:53:08,284 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 19:53:08,285 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:08,285 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:53:08,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:53:08,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:08,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1760909140, now seen corresponding path program 1 times [2022-12-05 19:53:08,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:08,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309394798] [2022-12-05 19:53:08,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:08,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:08,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:08,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309394798] [2022-12-05 19:53:08,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309394798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:08,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:53:08,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:53:08,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361966740] [2022-12-05 19:53:08,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:08,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:53:08,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:08,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:53:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:53:08,694 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 131 [2022-12-05 19:53:08,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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) [2022-12-05 19:53:08,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:08,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 131 [2022-12-05 19:53:08,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:08,764 INFO L130 PetriNetUnfolder]: 16/170 cut-off events. [2022-12-05 19:53:08,765 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-05 19:53:08,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 170 events. 16/170 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 378 event pairs, 5 based on Foata normal form. 21/181 useless extension candidates. Maximal degree in co-relation 155. Up to 22 conditions per place. [2022-12-05 19:53:08,768 INFO L137 encePairwiseOnDemand]: 124/131 looper letters, 12 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2022-12-05 19:53:08,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 118 transitions, 279 flow [2022-12-05 19:53:08,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:53:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:53:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2022-12-05 19:53:08,777 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9363867684478372 [2022-12-05 19:53:08,778 INFO L175 Difference]: Start difference. First operand has 117 places, 118 transitions, 248 flow. Second operand 3 states and 368 transitions. [2022-12-05 19:53:08,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 118 transitions, 279 flow [2022-12-05 19:53:08,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 118 transitions, 269 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 19:53:08,785 INFO L231 Difference]: Finished difference. Result has 116 places, 115 transitions, 244 flow [2022-12-05 19:53:08,786 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=116, PETRI_TRANSITIONS=115} [2022-12-05 19:53:08,791 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, -1 predicate places. [2022-12-05 19:53:08,791 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 115 transitions, 244 flow [2022-12-05 19:53:08,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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) [2022-12-05 19:53:08,791 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:08,792 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:53:08,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 19:53:08,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:53:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2125532005, now seen corresponding path program 1 times [2022-12-05 19:53:08,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:08,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803466616] [2022-12-05 19:53:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:08,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:08,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:08,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803466616] [2022-12-05 19:53:08,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803466616] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:53:08,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526445744] [2022-12-05 19:53:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:08,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:08,967 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) [2022-12-05 19:53:08,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 19:53:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:09,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-05 19:53:09,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:53:09,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:53:09,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526445744] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:09,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 19:53:09,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-05 19:53:09,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676164489] [2022-12-05 19:53:09,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:09,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:53:09,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:09,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:53:09,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:53:09,184 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 131 [2022-12-05 19:53:09,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 115 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2022-12-05 19:53:09,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:09,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 131 [2022-12-05 19:53:09,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:09,240 INFO L130 PetriNetUnfolder]: 20/192 cut-off events. [2022-12-05 19:53:09,240 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-12-05 19:53:09,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 192 events. 20/192 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 550 event pairs, 7 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 164. Up to 28 conditions per place. [2022-12-05 19:53:09,244 INFO L137 encePairwiseOnDemand]: 128/131 looper letters, 15 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2022-12-05 19:53:09,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 289 flow [2022-12-05 19:53:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:53:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:53:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-12-05 19:53:09,248 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9083969465648855 [2022-12-05 19:53:09,248 INFO L175 Difference]: Start difference. First operand has 116 places, 115 transitions, 244 flow. Second operand 3 states and 357 transitions. [2022-12-05 19:53:09,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 289 flow [2022-12-05 19:53:09,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:53:09,252 INFO L231 Difference]: Finished difference. Result has 118 places, 116 transitions, 254 flow [2022-12-05 19:53:09,252 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=118, PETRI_TRANSITIONS=116} [2022-12-05 19:53:09,253 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 1 predicate places. [2022-12-05 19:53:09,253 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 116 transitions, 254 flow [2022-12-05 19:53:09,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2022-12-05 19:53:09,253 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:09,254 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:53:09,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 19:53:09,461 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 [2022-12-05 19:53:09,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:53:09,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash 744158185, now seen corresponding path program 1 times [2022-12-05 19:53:09,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:09,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088764248] [2022-12-05 19:53:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:09,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:53:09,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:09,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088764248] [2022-12-05 19:53:09,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088764248] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:53:09,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251898055] [2022-12-05 19:53:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:09,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:09,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:09,614 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) [2022-12-05 19:53:09,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 19:53:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:09,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-05 19:53:09,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:53:09,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:53:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:53:09,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251898055] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:53:09,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:53:09,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-05 19:53:09,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761648826] [2022-12-05 19:53:09,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:53:09,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-05 19:53:09,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:09,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-05 19:53:09,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-05 19:53:09,856 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 131 [2022-12-05 19:53:09,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 116 transitions, 254 flow. Second operand has 10 states, 10 states have (on average 116.1) internal successors, (1161), 10 states have internal predecessors, (1161), 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) [2022-12-05 19:53:09,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:09,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 131 [2022-12-05 19:53:09,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:09,961 INFO L130 PetriNetUnfolder]: 26/226 cut-off events. [2022-12-05 19:53:09,962 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 19:53:09,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 226 events. 26/226 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 548 event pairs, 4 based on Foata normal form. 4/220 useless extension candidates. Maximal degree in co-relation 261. Up to 17 conditions per place. [2022-12-05 19:53:09,964 INFO L137 encePairwiseOnDemand]: 125/131 looper letters, 18 selfloop transitions, 9 changer transitions 0/131 dead transitions. [2022-12-05 19:53:09,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 131 transitions, 347 flow [2022-12-05 19:53:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:53:09,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:53:09,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1055 transitions. [2022-12-05 19:53:09,968 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8948261238337574 [2022-12-05 19:53:09,968 INFO L175 Difference]: Start difference. First operand has 118 places, 116 transitions, 254 flow. Second operand 9 states and 1055 transitions. [2022-12-05 19:53:09,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 131 transitions, 347 flow [2022-12-05 19:53:09,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 131 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:53:09,971 INFO L231 Difference]: Finished difference. Result has 128 places, 122 transitions, 302 flow [2022-12-05 19:53:09,972 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=302, PETRI_PLACES=128, PETRI_TRANSITIONS=122} [2022-12-05 19:53:09,973 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 11 predicate places. [2022-12-05 19:53:09,973 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 122 transitions, 302 flow [2022-12-05 19:53:09,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 116.1) internal successors, (1161), 10 states have internal predecessors, (1161), 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) [2022-12-05 19:53:09,974 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:09,974 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:53:09,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 19:53:10,180 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 [2022-12-05 19:53:10,181 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:53:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash 490276105, now seen corresponding path program 2 times [2022-12-05 19:53:10,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:10,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72157388] [2022-12-05 19:53:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:10,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-05 19:53:10,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:10,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72157388] [2022-12-05 19:53:10,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72157388] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:53:10,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716896667] [2022-12-05 19:53:10,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 19:53:10,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:10,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:10,301 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) [2022-12-05 19:53:10,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 19:53:10,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 19:53:10,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:53:10,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-05 19:53:10,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-05 19:53:10,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:53:10,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716896667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:10,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 19:53:10,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-05 19:53:10,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615541548] [2022-12-05 19:53:10,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:10,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 19:53:10,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 19:53:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-05 19:53:10,494 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 131 [2022-12-05 19:53:10,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 122 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 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) [2022-12-05 19:53:10,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:10,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 131 [2022-12-05 19:53:10,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:10,696 INFO L130 PetriNetUnfolder]: 307/1226 cut-off events. [2022-12-05 19:53:10,696 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-12-05 19:53:10,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 1226 events. 307/1226 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7083 event pairs, 41 based on Foata normal form. 0/1114 useless extension candidates. Maximal degree in co-relation 1515. Up to 186 conditions per place. [2022-12-05 19:53:10,704 INFO L137 encePairwiseOnDemand]: 122/131 looper letters, 32 selfloop transitions, 18 changer transitions 0/157 dead transitions. [2022-12-05 19:53:10,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 157 transitions, 478 flow [2022-12-05 19:53:10,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:53:10,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:53:10,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 823 transitions. [2022-12-05 19:53:10,710 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8974918211559433 [2022-12-05 19:53:10,710 INFO L175 Difference]: Start difference. First operand has 128 places, 122 transitions, 302 flow. Second operand 7 states and 823 transitions. [2022-12-05 19:53:10,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 157 transitions, 478 flow [2022-12-05 19:53:10,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 157 transitions, 472 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-05 19:53:10,717 INFO L231 Difference]: Finished difference. Result has 139 places, 140 transitions, 436 flow [2022-12-05 19:53:10,717 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=139, PETRI_TRANSITIONS=140} [2022-12-05 19:53:10,718 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 22 predicate places. [2022-12-05 19:53:10,718 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 140 transitions, 436 flow [2022-12-05 19:53:10,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 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) [2022-12-05 19:53:10,719 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:10,719 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:53:10,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-05 19:53:10,923 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 [2022-12-05 19:53:10,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:53:10,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:10,924 INFO L85 PathProgramCache]: Analyzing trace with hash 12643131, now seen corresponding path program 3 times [2022-12-05 19:53:10,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:10,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307247577] [2022-12-05 19:53:10,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:10,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-05 19:53:11,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:11,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307247577] [2022-12-05 19:53:11,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307247577] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:53:11,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712449242] [2022-12-05 19:53:11,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 19:53:11,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:11,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:11,028 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) [2022-12-05 19:53:11,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 19:53:11,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-05 19:53:11,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:53:11,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-05 19:53:11,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-05 19:53:11,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:53:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-05 19:53:11,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712449242] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:53:11,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:53:11,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-05 19:53:11,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010761979] [2022-12-05 19:53:11,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:53:11,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-05 19:53:11,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:11,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-05 19:53:11,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-05 19:53:11,278 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2022-12-05 19:53:11,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 140 transitions, 436 flow. Second operand has 10 states, 10 states have (on average 114.7) internal successors, (1147), 10 states have internal predecessors, (1147), 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) [2022-12-05 19:53:11,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:11,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2022-12-05 19:53:11,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:11,471 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([358] thread1EXIT-->L915-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem16#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem16#1=|v_ULTIMATE.start_main_#t~mem16#1_5|, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem16#1=|v_ULTIMATE.start_main_#t~mem16#1_5|, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4} AuxVars[] AssignedVars[][148], [Black: 1076#true, 113#L915-2true, Black: 1219#(<= 0 ~num~0), 1898#(< thread2Thread1of1ForFork1_~j~0 4), Black: 386#(<= thread2Thread1of1ForFork1_~j~0 0), Black: 133#(= thread1Thread1of1ForFork0_~i~0 0), Black: 425#(<= thread1Thread1of1ForFork0_~i~0 1), 1080#(<= 1 ~num~0), Black: 836#(< thread1Thread1of1ForFork0_~i~0 4), 15#L897true, 421#true, Black: 1465#(and (<= 0 |thread1Thread1of1ForFork0_#t~post6|) (<= 0 ~num~0)), Black: 1289#(<= 0 |thread1Thread1of1ForFork0_#t~post6|), Black: 1467#(and (<= 0 |thread1Thread1of1ForFork0_#t~post6|) (<= 1 ~num~0))]) [2022-12-05 19:53:11,471 INFO L382 tUnfolder$Statistics]: this new event has 141 ancestors and is cut-off event [2022-12-05 19:53:11,471 INFO L385 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-12-05 19:53:11,471 INFO L385 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-12-05 19:53:11,471 INFO L385 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-12-05 19:53:11,483 INFO L130 PetriNetUnfolder]: 327/1518 cut-off events. [2022-12-05 19:53:11,484 INFO L131 PetriNetUnfolder]: For 822/913 co-relation queries the response was YES. [2022-12-05 19:53:11,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 1518 events. 327/1518 cut-off events. For 822/913 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10261 event pairs, 31 based on Foata normal form. 54/1524 useless extension candidates. Maximal degree in co-relation 2814. Up to 173 conditions per place. [2022-12-05 19:53:11,494 INFO L137 encePairwiseOnDemand]: 125/131 looper letters, 22 selfloop transitions, 9 changer transitions 0/157 dead transitions. [2022-12-05 19:53:11,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 157 transitions, 541 flow [2022-12-05 19:53:11,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:53:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:53:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1041 transitions. [2022-12-05 19:53:11,497 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8829516539440203 [2022-12-05 19:53:11,497 INFO L175 Difference]: Start difference. First operand has 139 places, 140 transitions, 436 flow. Second operand 9 states and 1041 transitions. [2022-12-05 19:53:11,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 157 transitions, 541 flow [2022-12-05 19:53:11,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 157 transitions, 541 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 19:53:11,503 INFO L231 Difference]: Finished difference. Result has 150 places, 146 transitions, 486 flow [2022-12-05 19:53:11,503 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=486, PETRI_PLACES=150, PETRI_TRANSITIONS=146} [2022-12-05 19:53:11,505 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 33 predicate places. [2022-12-05 19:53:11,505 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 146 transitions, 486 flow [2022-12-05 19:53:11,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 114.7) internal successors, (1147), 10 states have internal predecessors, (1147), 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) [2022-12-05 19:53:11,506 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:11,506 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:53:11,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 19:53:11,711 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 [2022-12-05 19:53:11,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:53:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1676024475, now seen corresponding path program 4 times [2022-12-05 19:53:11,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:11,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979288137] [2022-12-05 19:53:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:11,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-05 19:53:11,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:11,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979288137] [2022-12-05 19:53:11,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979288137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:11,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:53:11,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:53:11,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166808887] [2022-12-05 19:53:11,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:11,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:53:11,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:11,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:53:11,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:53:11,842 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 131 [2022-12-05 19:53:11,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 146 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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) [2022-12-05 19:53:11,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:11,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 131 [2022-12-05 19:53:11,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:11,962 INFO L130 PetriNetUnfolder]: 125/884 cut-off events. [2022-12-05 19:53:11,962 INFO L131 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2022-12-05 19:53:11,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 884 events. 125/884 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4627 event pairs, 14 based on Foata normal form. 92/976 useless extension candidates. Maximal degree in co-relation 1489. Up to 127 conditions per place. [2022-12-05 19:53:11,967 INFO L137 encePairwiseOnDemand]: 123/131 looper letters, 16 selfloop transitions, 8 changer transitions 0/138 dead transitions. [2022-12-05 19:53:11,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 138 transitions, 482 flow [2022-12-05 19:53:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:53:11,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:53:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2022-12-05 19:53:11,969 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8575063613231552 [2022-12-05 19:53:11,969 INFO L175 Difference]: Start difference. First operand has 150 places, 146 transitions, 486 flow. Second operand 3 states and 337 transitions. [2022-12-05 19:53:11,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 138 transitions, 482 flow [2022-12-05 19:53:11,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 138 transitions, 462 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-05 19:53:11,973 INFO L231 Difference]: Finished difference. Result has 148 places, 136 transitions, 424 flow [2022-12-05 19:53:11,973 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=148, PETRI_TRANSITIONS=136} [2022-12-05 19:53:11,975 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 31 predicate places. [2022-12-05 19:53:11,975 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 136 transitions, 424 flow [2022-12-05 19:53:11,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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) [2022-12-05 19:53:11,976 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:11,976 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:53:11,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 19:53:11,976 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:53:11,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash -857679297, now seen corresponding path program 5 times [2022-12-05 19:53:11,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:11,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016400437] [2022-12-05 19:53:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:11,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-05 19:53:12,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:12,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016400437] [2022-12-05 19:53:12,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016400437] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:53:12,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328163508] [2022-12-05 19:53:12,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 19:53:12,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:12,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:12,147 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) [2022-12-05 19:53:12,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 19:53:12,270 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-05 19:53:12,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:53:12,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 19:53:12,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-05 19:53:12,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:53:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-05 19:53:12,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328163508] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:53:12,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:53:12,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-12-05 19:53:12,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262196152] [2022-12-05 19:53:12,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:53:12,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 19:53:12,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:12,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 19:53:12,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:53:12,494 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2022-12-05 19:53:12,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 136 transitions, 424 flow. Second operand has 16 states, 16 states have (on average 108.875) internal successors, (1742), 16 states have internal predecessors, (1742), 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) [2022-12-05 19:53:12,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:12,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2022-12-05 19:53:12,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:14,206 INFO L130 PetriNetUnfolder]: 875/3502 cut-off events. [2022-12-05 19:53:14,207 INFO L131 PetriNetUnfolder]: For 1638/1638 co-relation queries the response was YES. [2022-12-05 19:53:14,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8177 conditions, 3502 events. 875/3502 cut-off events. For 1638/1638 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 25120 event pairs, 40 based on Foata normal form. 54/3527 useless extension candidates. Maximal degree in co-relation 7779. Up to 359 conditions per place. [2022-12-05 19:53:14,225 INFO L137 encePairwiseOnDemand]: 119/131 looper letters, 231 selfloop transitions, 258 changer transitions 0/591 dead transitions. [2022-12-05 19:53:14,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 591 transitions, 3442 flow [2022-12-05 19:53:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-12-05 19:53:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2022-12-05 19:53:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 13321 transitions. [2022-12-05 19:53:14,242 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8335001877111751 [2022-12-05 19:53:14,242 INFO L175 Difference]: Start difference. First operand has 148 places, 136 transitions, 424 flow. Second operand 122 states and 13321 transitions. [2022-12-05 19:53:14,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 591 transitions, 3442 flow [2022-12-05 19:53:14,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 591 transitions, 3434 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:53:14,254 INFO L231 Difference]: Finished difference. Result has 340 places, 378 transitions, 2635 flow [2022-12-05 19:53:14,254 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=122, PETRI_FLOW=2635, PETRI_PLACES=340, PETRI_TRANSITIONS=378} [2022-12-05 19:53:14,255 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 223 predicate places. [2022-12-05 19:53:14,255 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 378 transitions, 2635 flow [2022-12-05 19:53:14,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 108.875) internal successors, (1742), 16 states have internal predecessors, (1742), 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) [2022-12-05 19:53:14,256 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:14,256 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:53:14,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-05 19:53:14,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:14,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:53:14,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:14,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1334772546, now seen corresponding path program 6 times [2022-12-05 19:53:14,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:14,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14031372] [2022-12-05 19:53:14,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:14,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-05 19:53:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:14,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14031372] [2022-12-05 19:53:14,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14031372] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:53:14,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619633925] [2022-12-05 19:53:14,607 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-05 19:53:14,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:14,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:14,609 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) [2022-12-05 19:53:14,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 19:53:14,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-12-05 19:53:14,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:53:14,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-05 19:53:14,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-05 19:53:14,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:53:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-05 19:53:14,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619633925] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:53:14,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:53:14,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-12-05 19:53:14,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278456973] [2022-12-05 19:53:14,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:53:14,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:53:14,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:14,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:53:14,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:53:14,932 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 131 [2022-12-05 19:53:14,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 378 transitions, 2635 flow. Second operand has 6 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 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) [2022-12-05 19:53:14,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:14,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 131 [2022-12-05 19:53:14,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:15,136 INFO L130 PetriNetUnfolder]: 162/940 cut-off events. [2022-12-05 19:53:15,136 INFO L131 PetriNetUnfolder]: For 7442/7468 co-relation queries the response was YES. [2022-12-05 19:53:15,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3255 conditions, 940 events. 162/940 cut-off events. For 7442/7468 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3932 event pairs, 25 based on Foata normal form. 68/995 useless extension candidates. Maximal degree in co-relation 2827. Up to 68 conditions per place. [2022-12-05 19:53:15,144 INFO L137 encePairwiseOnDemand]: 120/131 looper letters, 18 selfloop transitions, 11 changer transitions 0/260 dead transitions. [2022-12-05 19:53:15,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 260 transitions, 1652 flow [2022-12-05 19:53:15,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 19:53:15,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 19:53:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 899 transitions. [2022-12-05 19:53:15,146 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.857824427480916 [2022-12-05 19:53:15,146 INFO L175 Difference]: Start difference. First operand has 340 places, 378 transitions, 2635 flow. Second operand 8 states and 899 transitions. [2022-12-05 19:53:15,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 260 transitions, 1652 flow [2022-12-05 19:53:15,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 260 transitions, 1346 flow, removed 64 selfloop flow, removed 52 redundant places. [2022-12-05 19:53:15,173 INFO L231 Difference]: Finished difference. Result has 251 places, 253 transitions, 1304 flow [2022-12-05 19:53:15,174 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1304, PETRI_PLACES=251, PETRI_TRANSITIONS=253} [2022-12-05 19:53:15,174 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 134 predicate places. [2022-12-05 19:53:15,174 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 253 transitions, 1304 flow [2022-12-05 19:53:15,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 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) [2022-12-05 19:53:15,175 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:15,175 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:53:15,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-05 19:53:15,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:15,380 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:53:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1657306242, now seen corresponding path program 7 times [2022-12-05 19:53:15,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:15,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841690636] [2022-12-05 19:53:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:15,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 4 proven. 137 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-05 19:53:15,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:15,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841690636] [2022-12-05 19:53:15,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841690636] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:53:15,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823367709] [2022-12-05 19:53:15,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-05 19:53:15,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:15,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:15,953 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) [2022-12-05 19:53:15,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 19:53:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:16,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-05 19:53:16,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 4 proven. 137 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-05 19:53:16,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:53:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:53:17,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823367709] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:53:17,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:53:17,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 43 [2022-12-05 19:53:17,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553319023] [2022-12-05 19:53:17,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:53:17,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-05 19:53:17,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-05 19:53:17,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1677, Unknown=0, NotChecked=0, Total=1806 [2022-12-05 19:53:17,144 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 131 [2022-12-05 19:53:17,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 253 transitions, 1304 flow. Second operand has 43 states, 43 states have (on average 109.93023255813954) internal successors, (4727), 43 states have internal predecessors, (4727), 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) [2022-12-05 19:53:17,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:17,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 131 [2022-12-05 19:53:17,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:17,755 INFO L130 PetriNetUnfolder]: 151/891 cut-off events. [2022-12-05 19:53:17,756 INFO L131 PetriNetUnfolder]: For 3274/3314 co-relation queries the response was YES. [2022-12-05 19:53:17,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 891 events. 151/891 cut-off events. For 3274/3314 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3648 event pairs, 23 based on Foata normal form. 32/912 useless extension candidates. Maximal degree in co-relation 2395. Up to 55 conditions per place. [2022-12-05 19:53:17,762 INFO L137 encePairwiseOnDemand]: 122/131 looper letters, 0 selfloop transitions, 0 changer transitions 262/262 dead transitions. [2022-12-05 19:53:17,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 262 transitions, 1500 flow [2022-12-05 19:53:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:53:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:53:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2200 transitions. [2022-12-05 19:53:17,765 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8396946564885496 [2022-12-05 19:53:17,765 INFO L175 Difference]: Start difference. First operand has 251 places, 253 transitions, 1304 flow. Second operand 20 states and 2200 transitions. [2022-12-05 19:53:17,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 262 transitions, 1500 flow [2022-12-05 19:53:17,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 262 transitions, 1476 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-12-05 19:53:17,780 INFO L231 Difference]: Finished difference. Result has 261 places, 0 transitions, 0 flow [2022-12-05 19:53:17,780 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=0, PETRI_PLACES=261, PETRI_TRANSITIONS=0} [2022-12-05 19:53:17,781 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 144 predicate places. [2022-12-05 19:53:17,781 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 0 transitions, 0 flow [2022-12-05 19:53:17,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 109.93023255813954) internal successors, (4727), 43 states have internal predecessors, (4727), 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) [2022-12-05 19:53:17,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-05 19:53:17,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-05 19:53:17,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-05 19:53:17,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-05 19:53:17,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:17,994 INFO L458 BasicCegarLoop]: Path program histogram: [7, 1, 1] [2022-12-05 19:53:17,996 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 19:53:17,996 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 19:53:17,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 07:53:17 BasicIcfg [2022-12-05 19:53:17,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 19:53:18,000 INFO L158 Benchmark]: Toolchain (without parser) took 10976.99ms. Allocated memory was 177.2MB in the beginning and 317.7MB in the end (delta: 140.5MB). Free memory was 150.2MB in the beginning and 202.0MB in the end (delta: -51.8MB). Peak memory consumption was 89.4MB. Max. memory is 8.0GB. [2022-12-05 19:53:18,000 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory was 105.3MB in the beginning and 105.2MB in the end (delta: 81.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 19:53:18,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.80ms. Allocated memory is still 177.2MB. Free memory was 150.2MB in the beginning and 124.0MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-12-05 19:53:18,000 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.78ms. Allocated memory is still 177.2MB. Free memory was 123.4MB in the beginning and 121.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 19:53:18,000 INFO L158 Benchmark]: Boogie Preprocessor took 38.04ms. Allocated memory is still 177.2MB. Free memory was 121.3MB in the beginning and 119.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 19:53:18,001 INFO L158 Benchmark]: RCFGBuilder took 377.91ms. Allocated memory is still 177.2MB. Free memory was 119.8MB in the beginning and 103.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-05 19:53:18,001 INFO L158 Benchmark]: TraceAbstraction took 9957.83ms. Allocated memory was 177.2MB in the beginning and 317.7MB in the end (delta: 140.5MB). Free memory was 102.5MB in the beginning and 202.0MB in the end (delta: -99.6MB). Peak memory consumption was 42.2MB. Max. memory is 8.0GB. [2022-12-05 19:53:18,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory was 105.3MB in the beginning and 105.2MB in the end (delta: 81.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 544.80ms. Allocated memory is still 177.2MB. Free memory was 150.2MB in the beginning and 124.0MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.78ms. Allocated memory is still 177.2MB. Free memory was 123.4MB in the beginning and 121.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.04ms. Allocated memory is still 177.2MB. Free memory was 121.3MB in the beginning and 119.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 377.91ms. Allocated memory is still 177.2MB. Free memory was 119.8MB in the beginning and 103.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 9957.83ms. Allocated memory was 177.2MB in the beginning and 317.7MB in the end (delta: 140.5MB). Free memory was 102.5MB in the beginning and 202.0MB in the end (delta: -99.6MB). Peak memory consumption was 42.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 919]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.8s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 971 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 971 mSDsluCounter, 358 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 283 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1398 IncrementalHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 75 mSDtfsCounter, 1398 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1987 GetRequests, 1752 SyntacticMatches, 15 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7612 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2635occurred in iteration=7, InterpolantAutomatonStates: 184, 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, 0.6s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2151 NumberOfCodeBlocks, 2151 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2866 ConstructedInterpolants, 0 QuantifiedInterpolants, 7935 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2533 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 21 InterpolantComputations, 4 PerfectInterpolantSequences, 814/1369 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 19:53:18,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...