/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 --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_12-ptr_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:39:47,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:39:47,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:39:47,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:39:47,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:39:47,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:39:47,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:39:47,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:39:47,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:39:47,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:39:47,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:39:47,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:39:47,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:39:47,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:39:47,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:39:47,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:39:47,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:39:47,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:39:47,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:39:47,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:39:47,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:39:47,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:39:47,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:39:47,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:39:47,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:39:47,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:39:47,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:39:47,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:39:47,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:39:47,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:39:47,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:39:47,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:39:47,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:39:47,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:39:47,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:39:47,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:39:47,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:39:47,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:39:47,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:39:47,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:39:47,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:39:47,764 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 [2022-09-16 11:39:47,801 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:39:47,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:39:47,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:39:47,803 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:39:47,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:39:47,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:39:47,805 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:39:47,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:39:47,806 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:39:47,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:39:47,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:39:47,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:39:47,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:39:47,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:39:47,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:39:47,808 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:39:47,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:39:47,808 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:39:47,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:39:47,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:39:47,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:39:47,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:39:47,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:39:47,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:39:47,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:39:47,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:39:47,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:39:47,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:39:47,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:39:47,810 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:39:47,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:39:47,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:39:48,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:39:48,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:39:48,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:39:48,081 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:39:48,081 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:39:48,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_12-ptr_nr.i [2022-09-16 11:39:48,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22c6601d/145b4defd7c043b9a03befa0dc8cc2a9/FLAGfd1538dbb [2022-09-16 11:39:48,640 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:39:48,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_12-ptr_nr.i [2022-09-16 11:39:48,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22c6601d/145b4defd7c043b9a03befa0dc8cc2a9/FLAGfd1538dbb [2022-09-16 11:39:48,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22c6601d/145b4defd7c043b9a03befa0dc8cc2a9 [2022-09-16 11:39:48,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:39:48,985 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:39:48,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:39:48,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:39:48,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:39:48,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:39:48" (1/1) ... [2022-09-16 11:39:48,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7662256e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:48, skipping insertion in model container [2022-09-16 11:39:48,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:39:48" (1/1) ... [2022-09-16 11:39:49,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:39:49,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:39:49,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:39:49,451 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:39:49,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:39:49,556 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:39:49,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:49 WrapperNode [2022-09-16 11:39:49,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:39:49,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:39:49,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:39:49,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:39:49,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:49" (1/1) ... [2022-09-16 11:39:49,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:49" (1/1) ... [2022-09-16 11:39:49,610 INFO L138 Inliner]: procedures = 262, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-09-16 11:39:49,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:39:49,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:39:49,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:39:49,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:39:49,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:49" (1/1) ... [2022-09-16 11:39:49,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:49" (1/1) ... [2022-09-16 11:39:49,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:49" (1/1) ... [2022-09-16 11:39:49,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:49" (1/1) ... [2022-09-16 11:39:49,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:49" (1/1) ... [2022-09-16 11:39:49,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:49" (1/1) ... [2022-09-16 11:39:49,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:49" (1/1) ... [2022-09-16 11:39:49,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:39:49,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:39:49,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:39:49,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:39:49,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:49" (1/1) ... [2022-09-16 11:39:49,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:39:49,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:39:49,697 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) [2022-09-16 11:39:49,704 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 [2022-09-16 11:39:49,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:39:49,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:39:49,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:39:49,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:39:49,741 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:39:49,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:39:49,741 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-09-16 11:39:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-09-16 11:39:49,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:39:49,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:39:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:39:49,743 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:39:49,881 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:39:49,882 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:39:50,039 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:39:50,048 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:39:50,049 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 11:39:50,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:39:50 BoogieIcfgContainer [2022-09-16 11:39:50,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:39:50,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:39:50,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:39:50,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:39:50,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:39:48" (1/3) ... [2022-09-16 11:39:50,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e560b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:39:50, skipping insertion in model container [2022-09-16 11:39:50,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:49" (2/3) ... [2022-09-16 11:39:50,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e560b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:39:50, skipping insertion in model container [2022-09-16 11:39:50,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:39:50" (3/3) ... [2022-09-16 11:39:50,060 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_12-ptr_nr.i [2022-09-16 11:39:50,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:39:50,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-09-16 11:39:50,077 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:39:50,135 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-16 11:39:50,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 68 transitions, 144 flow [2022-09-16 11:39:50,203 INFO L130 PetriNetUnfolder]: 0/67 cut-off events. [2022-09-16 11:39:50,203 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:39:50,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 0/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-09-16 11:39:50,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 68 transitions, 144 flow [2022-09-16 11:39:50,208 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 59 transitions, 121 flow [2022-09-16 11:39:50,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:39:50,230 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;@64ef16fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:39:50,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-09-16 11:39:50,246 INFO L130 PetriNetUnfolder]: 0/43 cut-off events. [2022-09-16 11:39:50,246 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:39:50,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:50,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:50,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:50,252 INFO L85 PathProgramCache]: Analyzing trace with hash -992364100, now seen corresponding path program 1 times [2022-09-16 11:39:50,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:50,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832790218] [2022-09-16 11:39:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:50,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:50,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:50,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832790218] [2022-09-16 11:39:50,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832790218] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:50,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:50,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 11:39:50,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300455765] [2022-09-16 11:39:50,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:50,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:39:50,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:50,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:39:50,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:39:50,705 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 68 [2022-09-16 11:39:50,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 121 flow. Second operand has 9 states, 9 states have (on average 43.666666666666664) internal successors, (393), 9 states have internal predecessors, (393), 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) [2022-09-16 11:39:50,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:50,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 68 [2022-09-16 11:39:50,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:50,984 INFO L130 PetriNetUnfolder]: 24/131 cut-off events. [2022-09-16 11:39:50,984 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:39:50,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 131 events. 24/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 403 event pairs, 6 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 162. Up to 34 conditions per place. [2022-09-16 11:39:50,989 INFO L137 encePairwiseOnDemand]: 57/68 looper letters, 21 selfloop transitions, 10 changer transitions 10/77 dead transitions. [2022-09-16 11:39:50,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 239 flow [2022-09-16 11:39:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:39:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:39:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 423 transitions. [2022-09-16 11:39:51,013 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6911764705882353 [2022-09-16 11:39:51,014 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 423 transitions. [2022-09-16 11:39:51,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 423 transitions. [2022-09-16 11:39:51,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:51,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 423 transitions. [2022-09-16 11:39:51,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 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) [2022-09-16 11:39:51,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 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) [2022-09-16 11:39:51,031 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 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) [2022-09-16 11:39:51,032 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 121 flow. Second operand 9 states and 423 transitions. [2022-09-16 11:39:51,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 239 flow [2022-09-16 11:39:51,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:51,037 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 168 flow [2022-09-16 11:39:51,039 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=168, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2022-09-16 11:39:51,043 INFO L287 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2022-09-16 11:39:51,043 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 168 flow [2022-09-16 11:39:51,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 43.666666666666664) internal successors, (393), 9 states have internal predecessors, (393), 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) [2022-09-16 11:39:51,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:51,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:51,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:39:51,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:51,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1971555496, now seen corresponding path program 1 times [2022-09-16 11:39:51,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:51,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136760089] [2022-09-16 11:39:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:51,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:51,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:51,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136760089] [2022-09-16 11:39:51,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136760089] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:51,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:51,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:39:51,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487479634] [2022-09-16 11:39:51,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:51,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:39:51,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:51,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:39:51,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:39:51,167 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 68 [2022-09-16 11:39:51,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 168 flow. Second operand has 8 states, 8 states have (on average 43.75) internal successors, (350), 8 states have internal predecessors, (350), 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) [2022-09-16 11:39:51,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:51,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 68 [2022-09-16 11:39:51,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:51,388 INFO L130 PetriNetUnfolder]: 13/106 cut-off events. [2022-09-16 11:39:51,389 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-09-16 11:39:51,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 106 events. 13/106 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 273 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 162. Up to 17 conditions per place. [2022-09-16 11:39:51,393 INFO L137 encePairwiseOnDemand]: 58/68 looper letters, 22 selfloop transitions, 9 changer transitions 5/72 dead transitions. [2022-09-16 11:39:51,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 276 flow [2022-09-16 11:39:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:39:51,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:39:51,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 375 transitions. [2022-09-16 11:39:51,404 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6893382352941176 [2022-09-16 11:39:51,405 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 375 transitions. [2022-09-16 11:39:51,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 375 transitions. [2022-09-16 11:39:51,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:51,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 375 transitions. [2022-09-16 11:39:51,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 46.875) internal successors, (375), 8 states have internal predecessors, (375), 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) [2022-09-16 11:39:51,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2022-09-16 11:39:51,408 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2022-09-16 11:39:51,409 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 168 flow. Second operand 8 states and 375 transitions. [2022-09-16 11:39:51,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 276 flow [2022-09-16 11:39:51,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 72 transitions, 256 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-09-16 11:39:51,412 INFO L231 Difference]: Finished difference. Result has 78 places, 63 transitions, 189 flow [2022-09-16 11:39:51,412 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=189, PETRI_PLACES=78, PETRI_TRANSITIONS=63} [2022-09-16 11:39:51,413 INFO L287 CegarLoopForPetriNet]: 63 programPoint places, 15 predicate places. [2022-09-16 11:39:51,413 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 63 transitions, 189 flow [2022-09-16 11:39:51,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 43.75) internal successors, (350), 8 states have internal predecessors, (350), 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) [2022-09-16 11:39:51,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:51,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:51,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:39:51,414 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:51,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1575774002, now seen corresponding path program 1 times [2022-09-16 11:39:51,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:51,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130409564] [2022-09-16 11:39:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:51,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:51,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:51,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130409564] [2022-09-16 11:39:51,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130409564] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:51,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:51,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:39:51,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604941617] [2022-09-16 11:39:51,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:51,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:39:51,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:51,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:39:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:39:51,532 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 68 [2022-09-16 11:39:51,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 63 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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) [2022-09-16 11:39:51,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:51,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 68 [2022-09-16 11:39:51,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:51,574 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-09-16 11:39:51,575 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-09-16 11:39:51,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 74 events. 1/74 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 92. Up to 11 conditions per place. [2022-09-16 11:39:51,576 INFO L137 encePairwiseOnDemand]: 64/68 looper letters, 7 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2022-09-16 11:39:51,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 63 transitions, 211 flow [2022-09-16 11:39:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:39:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:39:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2022-09-16 11:39:51,578 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8872549019607843 [2022-09-16 11:39:51,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 181 transitions. [2022-09-16 11:39:51,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 181 transitions. [2022-09-16 11:39:51,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:51,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 181 transitions. [2022-09-16 11:39:51,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2022-09-16 11:39:51,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2022-09-16 11:39:51,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2022-09-16 11:39:51,581 INFO L175 Difference]: Start difference. First operand has 78 places, 63 transitions, 189 flow. Second operand 3 states and 181 transitions. [2022-09-16 11:39:51,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 63 transitions, 211 flow [2022-09-16 11:39:51,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 63 transitions, 192 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-09-16 11:39:51,588 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 178 flow [2022-09-16 11:39:51,588 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2022-09-16 11:39:51,590 INFO L287 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2022-09-16 11:39:51,591 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 178 flow [2022-09-16 11:39:51,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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) [2022-09-16 11:39:51,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:51,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:51,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:39:51,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:51,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:51,593 INFO L85 PathProgramCache]: Analyzing trace with hash 188097440, now seen corresponding path program 1 times [2022-09-16 11:39:51,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:51,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257919883] [2022-09-16 11:39:51,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:51,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:51,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:51,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257919883] [2022-09-16 11:39:51,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257919883] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:51,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:51,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:39:51,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857776763] [2022-09-16 11:39:51,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:51,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:39:51,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:51,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:39:51,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:39:51,770 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 68 [2022-09-16 11:39:51,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 178 flow. Second operand has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 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) [2022-09-16 11:39:51,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:51,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 68 [2022-09-16 11:39:51,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:52,112 INFO L130 PetriNetUnfolder]: 14/114 cut-off events. [2022-09-16 11:39:52,112 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-09-16 11:39:52,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 114 events. 14/114 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 253 event pairs, 5 based on Foata normal form. 2/115 useless extension candidates. Maximal degree in co-relation 191. Up to 25 conditions per place. [2022-09-16 11:39:52,113 INFO L137 encePairwiseOnDemand]: 55/68 looper letters, 30 selfloop transitions, 21 changer transitions 3/85 dead transitions. [2022-09-16 11:39:52,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 348 flow [2022-09-16 11:39:52,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:39:52,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:39:52,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 721 transitions. [2022-09-16 11:39:52,116 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5890522875816994 [2022-09-16 11:39:52,116 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 721 transitions. [2022-09-16 11:39:52,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 721 transitions. [2022-09-16 11:39:52,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:52,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 721 transitions. [2022-09-16 11:39:52,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 40.05555555555556) internal successors, (721), 18 states have internal predecessors, (721), 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) [2022-09-16 11:39:52,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 68.0) internal successors, (1292), 19 states have internal predecessors, (1292), 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) [2022-09-16 11:39:52,122 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 68.0) internal successors, (1292), 19 states have internal predecessors, (1292), 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) [2022-09-16 11:39:52,122 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 178 flow. Second operand 18 states and 721 transitions. [2022-09-16 11:39:52,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 348 flow [2022-09-16 11:39:52,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:52,128 INFO L231 Difference]: Finished difference. Result has 94 places, 72 transitions, 273 flow [2022-09-16 11:39:52,128 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=273, PETRI_PLACES=94, PETRI_TRANSITIONS=72} [2022-09-16 11:39:52,129 INFO L287 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2022-09-16 11:39:52,130 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 72 transitions, 273 flow [2022-09-16 11:39:52,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 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) [2022-09-16 11:39:52,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:52,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:52,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:39:52,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:52,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:52,135 INFO L85 PathProgramCache]: Analyzing trace with hash 517530094, now seen corresponding path program 1 times [2022-09-16 11:39:52,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:52,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929770244] [2022-09-16 11:39:52,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:52,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:52,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:52,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929770244] [2022-09-16 11:39:52,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929770244] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:52,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:52,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:39:52,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877604461] [2022-09-16 11:39:52,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:52,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:39:52,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:52,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:39:52,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:39:52,343 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 68 [2022-09-16 11:39:52,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 72 transitions, 273 flow. Second operand has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 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) [2022-09-16 11:39:52,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:52,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 68 [2022-09-16 11:39:52,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:52,631 INFO L130 PetriNetUnfolder]: 14/113 cut-off events. [2022-09-16 11:39:52,631 INFO L131 PetriNetUnfolder]: For 89/91 co-relation queries the response was YES. [2022-09-16 11:39:52,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 113 events. 14/113 cut-off events. For 89/91 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 249 event pairs, 10 based on Foata normal form. 3/115 useless extension candidates. Maximal degree in co-relation 226. Up to 37 conditions per place. [2022-09-16 11:39:52,633 INFO L137 encePairwiseOnDemand]: 56/68 looper letters, 25 selfloop transitions, 19 changer transitions 2/77 dead transitions. [2022-09-16 11:39:52,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 77 transitions, 373 flow [2022-09-16 11:39:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 11:39:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-16 11:39:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 559 transitions. [2022-09-16 11:39:52,636 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5871848739495799 [2022-09-16 11:39:52,636 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 559 transitions. [2022-09-16 11:39:52,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 559 transitions. [2022-09-16 11:39:52,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:52,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 559 transitions. [2022-09-16 11:39:52,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 39.92857142857143) internal successors, (559), 14 states have internal predecessors, (559), 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) [2022-09-16 11:39:52,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 68.0) internal successors, (1020), 15 states have internal predecessors, (1020), 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) [2022-09-16 11:39:52,640 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 68.0) internal successors, (1020), 15 states have internal predecessors, (1020), 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) [2022-09-16 11:39:52,641 INFO L175 Difference]: Start difference. First operand has 94 places, 72 transitions, 273 flow. Second operand 14 states and 559 transitions. [2022-09-16 11:39:52,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 77 transitions, 373 flow [2022-09-16 11:39:52,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 77 transitions, 334 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-09-16 11:39:52,645 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 268 flow [2022-09-16 11:39:52,645 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=268, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2022-09-16 11:39:52,646 INFO L287 CegarLoopForPetriNet]: 63 programPoint places, 33 predicate places. [2022-09-16 11:39:52,646 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 268 flow [2022-09-16 11:39:52,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 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) [2022-09-16 11:39:52,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:52,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:52,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:39:52,647 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:52,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:52,648 INFO L85 PathProgramCache]: Analyzing trace with hash -572135166, now seen corresponding path program 2 times [2022-09-16 11:39:52,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:52,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574505719] [2022-09-16 11:39:52,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:52,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:52,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:52,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574505719] [2022-09-16 11:39:52,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574505719] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:52,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:52,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:39:52,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811666059] [2022-09-16 11:39:52,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:52,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:39:52,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:39:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:39:52,770 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 68 [2022-09-16 11:39:52,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 268 flow. Second operand has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 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) [2022-09-16 11:39:52,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:52,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 68 [2022-09-16 11:39:52,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:53,015 INFO L130 PetriNetUnfolder]: 13/109 cut-off events. [2022-09-16 11:39:53,015 INFO L131 PetriNetUnfolder]: For 76/78 co-relation queries the response was YES. [2022-09-16 11:39:53,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 109 events. 13/109 cut-off events. For 76/78 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 227 event pairs, 0 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 229. Up to 24 conditions per place. [2022-09-16 11:39:53,017 INFO L137 encePairwiseOnDemand]: 56/68 looper letters, 23 selfloop transitions, 22 changer transitions 2/78 dead transitions. [2022-09-16 11:39:53,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 78 transitions, 372 flow [2022-09-16 11:39:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:39:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:39:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 635 transitions. [2022-09-16 11:39:53,020 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5836397058823529 [2022-09-16 11:39:53,020 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 635 transitions. [2022-09-16 11:39:53,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 635 transitions. [2022-09-16 11:39:53,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:53,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 635 transitions. [2022-09-16 11:39:53,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 39.6875) internal successors, (635), 16 states have internal predecessors, (635), 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) [2022-09-16 11:39:53,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 68.0) internal successors, (1156), 17 states have internal predecessors, (1156), 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) [2022-09-16 11:39:53,025 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 68.0) internal successors, (1156), 17 states have internal predecessors, (1156), 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) [2022-09-16 11:39:53,025 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 268 flow. Second operand 16 states and 635 transitions. [2022-09-16 11:39:53,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 78 transitions, 372 flow [2022-09-16 11:39:53,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 78 transitions, 328 flow, removed 2 selfloop flow, removed 13 redundant places. [2022-09-16 11:39:53,030 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 262 flow [2022-09-16 11:39:53,031 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=262, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2022-09-16 11:39:53,033 INFO L287 CegarLoopForPetriNet]: 63 programPoint places, 34 predicate places. [2022-09-16 11:39:53,033 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 262 flow [2022-09-16 11:39:53,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 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) [2022-09-16 11:39:53,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:53,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:53,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:39:53,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:53,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:53,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1770011732, now seen corresponding path program 1 times [2022-09-16 11:39:53,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:53,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440000525] [2022-09-16 11:39:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:53,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:53,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440000525] [2022-09-16 11:39:53,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440000525] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:53,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:53,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:39:53,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172150248] [2022-09-16 11:39:53,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:53,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:39:53,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:53,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:39:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:39:53,128 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 68 [2022-09-16 11:39:53,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 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) [2022-09-16 11:39:53,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:53,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 68 [2022-09-16 11:39:53,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:53,205 INFO L130 PetriNetUnfolder]: 15/124 cut-off events. [2022-09-16 11:39:53,205 INFO L131 PetriNetUnfolder]: For 87/89 co-relation queries the response was YES. [2022-09-16 11:39:53,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 124 events. 15/124 cut-off events. For 87/89 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 321 event pairs, 8 based on Foata normal form. 4/125 useless extension candidates. Maximal degree in co-relation 256. Up to 47 conditions per place. [2022-09-16 11:39:53,206 INFO L137 encePairwiseOnDemand]: 62/68 looper letters, 32 selfloop transitions, 4 changer transitions 11/80 dead transitions. [2022-09-16 11:39:53,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 80 transitions, 390 flow [2022-09-16 11:39:53,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:39:53,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:39:53,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 325 transitions. [2022-09-16 11:39:53,208 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6827731092436975 [2022-09-16 11:39:53,208 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 325 transitions. [2022-09-16 11:39:53,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 325 transitions. [2022-09-16 11:39:53,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:53,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 325 transitions. [2022-09-16 11:39:53,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 46.42857142857143) internal successors, (325), 7 states have internal predecessors, (325), 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) [2022-09-16 11:39:53,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 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) [2022-09-16 11:39:53,211 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 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) [2022-09-16 11:39:53,211 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 262 flow. Second operand 7 states and 325 transitions. [2022-09-16 11:39:53,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 80 transitions, 390 flow [2022-09-16 11:39:53,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 80 transitions, 334 flow, removed 3 selfloop flow, removed 15 redundant places. [2022-09-16 11:39:53,214 INFO L231 Difference]: Finished difference. Result has 93 places, 67 transitions, 218 flow [2022-09-16 11:39:53,214 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=93, PETRI_TRANSITIONS=67} [2022-09-16 11:39:53,215 INFO L287 CegarLoopForPetriNet]: 63 programPoint places, 30 predicate places. [2022-09-16 11:39:53,215 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 67 transitions, 218 flow [2022-09-16 11:39:53,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 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) [2022-09-16 11:39:53,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:53,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:53,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:39:53,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:53,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:53,216 INFO L85 PathProgramCache]: Analyzing trace with hash 787471079, now seen corresponding path program 1 times [2022-09-16 11:39:53,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:53,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525385407] [2022-09-16 11:39:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:53,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:53,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:53,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525385407] [2022-09-16 11:39:53,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525385407] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:53,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:53,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:39:53,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637881535] [2022-09-16 11:39:53,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:53,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:39:53,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:39:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:39:53,270 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 68 [2022-09-16 11:39:53,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 67 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 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) [2022-09-16 11:39:53,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:53,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 68 [2022-09-16 11:39:53,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:53,339 INFO L130 PetriNetUnfolder]: 11/102 cut-off events. [2022-09-16 11:39:53,339 INFO L131 PetriNetUnfolder]: For 68/69 co-relation queries the response was YES. [2022-09-16 11:39:53,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 102 events. 11/102 cut-off events. For 68/69 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 195 event pairs, 3 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 209. Up to 33 conditions per place. [2022-09-16 11:39:53,340 INFO L137 encePairwiseOnDemand]: 60/68 looper letters, 23 selfloop transitions, 5 changer transitions 12/70 dead transitions. [2022-09-16 11:39:53,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 70 transitions, 296 flow [2022-09-16 11:39:53,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:39:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:39:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 359 transitions. [2022-09-16 11:39:53,342 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6599264705882353 [2022-09-16 11:39:53,342 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 359 transitions. [2022-09-16 11:39:53,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 359 transitions. [2022-09-16 11:39:53,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:53,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 359 transitions. [2022-09-16 11:39:53,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.875) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:53,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2022-09-16 11:39:53,345 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2022-09-16 11:39:53,345 INFO L175 Difference]: Start difference. First operand has 93 places, 67 transitions, 218 flow. Second operand 8 states and 359 transitions. [2022-09-16 11:39:53,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 70 transitions, 296 flow [2022-09-16 11:39:53,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 70 transitions, 281 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-09-16 11:39:53,347 INFO L231 Difference]: Finished difference. Result has 87 places, 57 transitions, 176 flow [2022-09-16 11:39:53,348 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=176, PETRI_PLACES=87, PETRI_TRANSITIONS=57} [2022-09-16 11:39:53,348 INFO L287 CegarLoopForPetriNet]: 63 programPoint places, 24 predicate places. [2022-09-16 11:39:53,348 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 57 transitions, 176 flow [2022-09-16 11:39:53,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 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) [2022-09-16 11:39:53,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:53,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:53,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:39:53,349 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:53,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1536053518, now seen corresponding path program 2 times [2022-09-16 11:39:53,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:53,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555041923] [2022-09-16 11:39:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:53,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:53,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:53,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555041923] [2022-09-16 11:39:53,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555041923] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:53,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:53,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:39:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993686868] [2022-09-16 11:39:53,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:53,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:39:53,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:39:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:39:53,399 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 68 [2022-09-16 11:39:53,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 57 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 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) [2022-09-16 11:39:53,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:53,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 68 [2022-09-16 11:39:53,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:53,444 INFO L130 PetriNetUnfolder]: 8/77 cut-off events. [2022-09-16 11:39:53,444 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-09-16 11:39:53,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 77 events. 8/77 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 4 based on Foata normal form. 2/77 useless extension candidates. Maximal degree in co-relation 168. Up to 31 conditions per place. [2022-09-16 11:39:53,445 INFO L137 encePairwiseOnDemand]: 62/68 looper letters, 18 selfloop transitions, 4 changer transitions 8/60 dead transitions. [2022-09-16 11:39:53,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 60 transitions, 244 flow [2022-09-16 11:39:53,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:39:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:39:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 316 transitions. [2022-09-16 11:39:53,446 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6638655462184874 [2022-09-16 11:39:53,446 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 316 transitions. [2022-09-16 11:39:53,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 316 transitions. [2022-09-16 11:39:53,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:53,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 316 transitions. [2022-09-16 11:39:53,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 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) [2022-09-16 11:39:53,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 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) [2022-09-16 11:39:53,449 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 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) [2022-09-16 11:39:53,449 INFO L175 Difference]: Start difference. First operand has 87 places, 57 transitions, 176 flow. Second operand 7 states and 316 transitions. [2022-09-16 11:39:53,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 60 transitions, 244 flow [2022-09-16 11:39:53,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 60 transitions, 224 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:39:53,451 INFO L231 Difference]: Finished difference. Result has 74 places, 52 transitions, 139 flow [2022-09-16 11:39:53,451 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=139, PETRI_PLACES=74, PETRI_TRANSITIONS=52} [2022-09-16 11:39:53,451 INFO L287 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2022-09-16 11:39:53,452 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 52 transitions, 139 flow [2022-09-16 11:39:53,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 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) [2022-09-16 11:39:53,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:53,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:53,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:39:53,452 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:53,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:53,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1717069780, now seen corresponding path program 3 times [2022-09-16 11:39:53,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:53,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742692384] [2022-09-16 11:39:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:53,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:53,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:53,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742692384] [2022-09-16 11:39:53,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742692384] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:53,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:53,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:39:53,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227216923] [2022-09-16 11:39:53,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:53,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:39:53,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:53,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:39:53,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:39:53,497 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 68 [2022-09-16 11:39:53,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 52 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 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) [2022-09-16 11:39:53,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:53,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 68 [2022-09-16 11:39:53,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:53,570 INFO L130 PetriNetUnfolder]: 4/59 cut-off events. [2022-09-16 11:39:53,570 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-09-16 11:39:53,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 59 events. 4/59 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 110. Up to 9 conditions per place. [2022-09-16 11:39:53,570 INFO L137 encePairwiseOnDemand]: 60/68 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2022-09-16 11:39:53,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 53 transitions, 186 flow [2022-09-16 11:39:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:39:53,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:39:53,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 352 transitions. [2022-09-16 11:39:53,572 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2022-09-16 11:39:53,572 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 352 transitions. [2022-09-16 11:39:53,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 352 transitions. [2022-09-16 11:39:53,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:53,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 352 transitions. [2022-09-16 11:39:53,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.0) internal successors, (352), 8 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) [2022-09-16 11:39:53,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2022-09-16 11:39:53,575 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2022-09-16 11:39:53,575 INFO L175 Difference]: Start difference. First operand has 74 places, 52 transitions, 139 flow. Second operand 8 states and 352 transitions. [2022-09-16 11:39:53,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 53 transitions, 186 flow [2022-09-16 11:39:53,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 53 transitions, 166 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-09-16 11:39:53,576 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2022-09-16 11:39:53,576 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2022-09-16 11:39:53,577 INFO L287 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2022-09-16 11:39:53,577 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2022-09-16 11:39:53,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 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) [2022-09-16 11:39:53,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2022-09-16 11:39:53,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2022-09-16 11:39:53,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-09-16 11:39:53,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2022-09-16 11:39:53,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2022-09-16 11:39:53,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2022-09-16 11:39:53,581 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2022-09-16 11:39:53,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:39:53,581 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2022-09-16 11:39:53,586 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:39:53,586 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:39:53,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:39:53 BasicIcfg [2022-09-16 11:39:53,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:39:53,591 INFO L158 Benchmark]: Toolchain (without parser) took 4605.60ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 118.0MB in the beginning and 179.6MB in the end (delta: -61.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:39:53,591 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 174.1MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:39:53,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 569.80ms. Allocated memory is still 174.1MB. Free memory was 117.8MB in the beginning and 134.9MB in the end (delta: -17.0MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. [2022-09-16 11:39:53,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.56ms. Allocated memory is still 174.1MB. Free memory was 134.9MB in the beginning and 132.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:39:53,592 INFO L158 Benchmark]: Boogie Preprocessor took 48.72ms. Allocated memory is still 174.1MB. Free memory was 132.8MB in the beginning and 131.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:39:53,592 INFO L158 Benchmark]: RCFGBuilder took 386.74ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 118.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-09-16 11:39:53,592 INFO L158 Benchmark]: TraceAbstraction took 3537.73ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 118.1MB in the beginning and 179.6MB in the end (delta: -61.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:39:53,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 174.1MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 569.80ms. Allocated memory is still 174.1MB. Free memory was 117.8MB in the beginning and 134.9MB in the end (delta: -17.0MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.56ms. Allocated memory is still 174.1MB. Free memory was 134.9MB in the beginning and 132.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.72ms. Allocated memory is still 174.1MB. Free memory was 132.8MB in the beginning and 131.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 386.74ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 118.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3537.73ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 118.1MB in the beginning and 179.6MB in the end (delta: -61.4MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 923]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 923]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 85 locations, 7 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: 3.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 560 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 560 mSDsluCounter, 405 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 295 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 825 IncrementalHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 120 mSDtfsCounter, 825 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=4, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 462 NumberOfCodeBlocks, 462 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 452 ConstructedInterpolants, 0 QuantifiedInterpolants, 2395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:39:53,631 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...