/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/weaver/chl-chromosome-opt-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:42:25,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:42:25,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:42:25,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:42:25,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:42:25,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:42:25,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:42:25,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:42:25,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:42:25,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:42:25,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:42:25,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:42:25,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:42:25,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:42:25,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:42:25,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:42:25,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:42:25,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:42:25,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:42:25,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:42:25,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:42:25,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:42:25,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:42:25,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:42:25,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:42:25,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:42:25,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:42:25,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:42:25,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:42:25,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:42:25,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:42:25,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:42:25,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:42:25,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:42:25,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:42:25,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:42:25,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:42:25,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:42:25,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:42:25,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:42:25,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:42:25,856 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 11:42:25,885 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:42:25,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:42:25,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:42:25,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:42:25,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:42:25,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:42:25,887 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:42:25,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:42:25,887 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:42:25,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:42:25,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:42:25,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:42:25,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:42:25,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:42:25,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:42:25,889 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:42:25,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:42:25,889 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:42:25,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:42:25,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:42:25,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:42:25,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:42:25,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:42:25,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:42:25,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:42:25,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:42:25,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:42:25,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:42:25,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:42:25,891 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:42:25,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:42:25,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:42:26,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:42:26,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:42:26,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:42:26,192 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:42:26,193 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:42:26,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2022-09-16 11:42:26,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23e95872/4b2db4032d684baa8700404ee08fa75c/FLAG79612258a [2022-09-16 11:42:26,746 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:42:26,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2022-09-16 11:42:26,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23e95872/4b2db4032d684baa8700404ee08fa75c/FLAG79612258a [2022-09-16 11:42:27,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23e95872/4b2db4032d684baa8700404ee08fa75c [2022-09-16 11:42:27,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:42:27,260 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:42:27,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:42:27,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:42:27,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:42:27,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:42:27" (1/1) ... [2022-09-16 11:42:27,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6bd654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27, skipping insertion in model container [2022-09-16 11:42:27,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:42:27" (1/1) ... [2022-09-16 11:42:27,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:42:27,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:42:27,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2022-09-16 11:42:27,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:42:27,570 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:42:27,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2022-09-16 11:42:27,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:42:27,624 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:42:27,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27 WrapperNode [2022-09-16 11:42:27,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:42:27,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:42:27,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:42:27,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:42:27,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27" (1/1) ... [2022-09-16 11:42:27,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27" (1/1) ... [2022-09-16 11:42:27,687 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 192 [2022-09-16 11:42:27,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:42:27,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:42:27,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:42:27,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:42:27,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27" (1/1) ... [2022-09-16 11:42:27,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27" (1/1) ... [2022-09-16 11:42:27,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27" (1/1) ... [2022-09-16 11:42:27,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27" (1/1) ... [2022-09-16 11:42:27,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27" (1/1) ... [2022-09-16 11:42:27,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27" (1/1) ... [2022-09-16 11:42:27,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27" (1/1) ... [2022-09-16 11:42:27,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:42:27,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:42:27,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:42:27,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:42:27,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27" (1/1) ... [2022-09-16 11:42:27,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:42:27,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:27,764 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 11:42:27,795 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 11:42:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:42:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:42:27,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:42:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:42:27,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:42:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:42:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:42:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:42:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:42:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:42:27,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:42:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:42:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:42:27,814 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 11:42:27,931 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:42:27,932 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:42:28,322 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:42:28,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:42:28,332 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:42:28,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:42:28 BoogieIcfgContainer [2022-09-16 11:42:28,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:42:28,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:42:28,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:42:28,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:42:28,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:42:27" (1/3) ... [2022-09-16 11:42:28,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138557ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:42:28, skipping insertion in model container [2022-09-16 11:42:28,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:27" (2/3) ... [2022-09-16 11:42:28,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138557ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:42:28, skipping insertion in model container [2022-09-16 11:42:28,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:42:28" (3/3) ... [2022-09-16 11:42:28,347 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2022-09-16 11:42:28,365 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:42:28,365 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-09-16 11:42:28,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:42:28,474 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:42:28,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 241 transitions, 498 flow [2022-09-16 11:42:28,594 INFO L130 PetriNetUnfolder]: 21/239 cut-off events. [2022-09-16 11:42:28,595 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:42:28,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 239 events. 21/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 313 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 167. Up to 3 conditions per place. [2022-09-16 11:42:28,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 241 transitions, 498 flow [2022-09-16 11:42:28,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 221 transitions, 454 flow [2022-09-16 11:42:28,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:42:28,623 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;@31019145, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:42:28,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-09-16 11:42:28,634 INFO L130 PetriNetUnfolder]: 3/56 cut-off events. [2022-09-16 11:42:28,635 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:42:28,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:28,638 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] [2022-09-16 11:42:28,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:28,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:28,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1745770023, now seen corresponding path program 1 times [2022-09-16 11:42:28,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:28,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687626786] [2022-09-16 11:42:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:28,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:28,925 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 11:42:28,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:28,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687626786] [2022-09-16 11:42:28,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687626786] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:28,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:28,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:42:28,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668222883] [2022-09-16 11:42:28,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:28,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:42:28,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:28,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:42:28,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:42:28,978 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 241 [2022-09-16 11:42:28,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 221 transitions, 454 flow. Second operand has 4 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 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 11:42:28,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:28,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 241 [2022-09-16 11:42:28,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:29,249 INFO L130 PetriNetUnfolder]: 19/356 cut-off events. [2022-09-16 11:42:29,249 INFO L131 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-09-16 11:42:29,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 356 events. 19/356 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 999 event pairs, 0 based on Foata normal form. 16/330 useless extension candidates. Maximal degree in co-relation 295. Up to 30 conditions per place. [2022-09-16 11:42:29,258 INFO L137 encePairwiseOnDemand]: 218/241 looper letters, 40 selfloop transitions, 9 changer transitions 4/232 dead transitions. [2022-09-16 11:42:29,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 232 transitions, 586 flow [2022-09-16 11:42:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:42:29,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:42:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1074 transitions. [2022-09-16 11:42:29,280 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.891286307053942 [2022-09-16 11:42:29,281 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1074 transitions. [2022-09-16 11:42:29,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1074 transitions. [2022-09-16 11:42:29,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:29,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1074 transitions. [2022-09-16 11:42:29,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.8) internal successors, (1074), 5 states have internal predecessors, (1074), 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 11:42:29,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:29,306 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:29,308 INFO L175 Difference]: Start difference. First operand has 208 places, 221 transitions, 454 flow. Second operand 5 states and 1074 transitions. [2022-09-16 11:42:29,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 232 transitions, 586 flow [2022-09-16 11:42:29,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 232 transitions, 570 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:42:29,320 INFO L231 Difference]: Finished difference. Result has 211 places, 214 transitions, 485 flow [2022-09-16 11:42:29,322 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=485, PETRI_PLACES=211, PETRI_TRANSITIONS=214} [2022-09-16 11:42:29,326 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 3 predicate places. [2022-09-16 11:42:29,326 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 214 transitions, 485 flow [2022-09-16 11:42:29,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 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 11:42:29,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:29,328 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:29,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:42:29,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:29,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:29,331 INFO L85 PathProgramCache]: Analyzing trace with hash -626325973, now seen corresponding path program 1 times [2022-09-16 11:42:29,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:29,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84767010] [2022-09-16 11:42:29,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:29,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:29,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:29,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84767010] [2022-09-16 11:42:29,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84767010] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:42:29,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199216992] [2022-09-16 11:42:29,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:29,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:29,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:29,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:42:29,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:42:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:29,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:42:29,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:42:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:29,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:42:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:29,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199216992] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:42:29,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:42:29,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:42:29,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687483456] [2022-09-16 11:42:29,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:42:29,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:42:29,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:29,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:42:29,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:42:29,705 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 241 [2022-09-16 11:42:29,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 214 transitions, 485 flow. Second operand has 12 states, 12 states have (on average 203.66666666666666) internal successors, (2444), 12 states have internal predecessors, (2444), 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 11:42:29,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:29,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 241 [2022-09-16 11:42:29,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:30,148 INFO L130 PetriNetUnfolder]: 46/791 cut-off events. [2022-09-16 11:42:30,148 INFO L131 PetriNetUnfolder]: For 37/42 co-relation queries the response was YES. [2022-09-16 11:42:30,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 791 events. 46/791 cut-off events. For 37/42 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3693 event pairs, 0 based on Foata normal form. 6/712 useless extension candidates. Maximal degree in co-relation 584. Up to 23 conditions per place. [2022-09-16 11:42:30,156 INFO L137 encePairwiseOnDemand]: 226/241 looper letters, 76 selfloop transitions, 40 changer transitions 0/295 dead transitions. [2022-09-16 11:42:30,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 295 transitions, 945 flow [2022-09-16 11:42:30,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:42:30,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:42:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3740 transitions. [2022-09-16 11:42:30,165 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8621484555094514 [2022-09-16 11:42:30,165 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3740 transitions. [2022-09-16 11:42:30,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3740 transitions. [2022-09-16 11:42:30,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:30,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3740 transitions. [2022-09-16 11:42:30,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 207.77777777777777) internal successors, (3740), 18 states have internal predecessors, (3740), 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 11:42:30,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 241.0) internal successors, (4579), 19 states have internal predecessors, (4579), 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 11:42:30,188 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 241.0) internal successors, (4579), 19 states have internal predecessors, (4579), 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 11:42:30,188 INFO L175 Difference]: Start difference. First operand has 211 places, 214 transitions, 485 flow. Second operand 18 states and 3740 transitions. [2022-09-16 11:42:30,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 295 transitions, 945 flow [2022-09-16 11:42:30,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 295 transitions, 940 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:42:30,197 INFO L231 Difference]: Finished difference. Result has 227 places, 241 transitions, 718 flow [2022-09-16 11:42:30,197 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=718, PETRI_PLACES=227, PETRI_TRANSITIONS=241} [2022-09-16 11:42:30,198 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 19 predicate places. [2022-09-16 11:42:30,198 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 241 transitions, 718 flow [2022-09-16 11:42:30,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.66666666666666) internal successors, (2444), 12 states have internal predecessors, (2444), 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 11:42:30,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:30,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:30,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 11:42:30,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:30,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:30,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:30,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2058731751, now seen corresponding path program 1 times [2022-09-16 11:42:30,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:30,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575951741] [2022-09-16 11:42:30,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:30,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:30,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:30,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575951741] [2022-09-16 11:42:30,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575951741] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:42:30,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322006567] [2022-09-16 11:42:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:30,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:30,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:30,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:42:30,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:42:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:30,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:42:30,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:42:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:30,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:42:30,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322006567] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:30,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:42:30,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:42:30,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63226555] [2022-09-16 11:42:30,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:30,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:42:30,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:30,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:42:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:42:30,687 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 241 [2022-09-16 11:42:30,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 241 transitions, 718 flow. Second operand has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 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 11:42:30,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:30,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 241 [2022-09-16 11:42:30,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:30,933 INFO L130 PetriNetUnfolder]: 46/783 cut-off events. [2022-09-16 11:42:30,933 INFO L131 PetriNetUnfolder]: For 131/136 co-relation queries the response was YES. [2022-09-16 11:42:30,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 783 events. 46/783 cut-off events. For 131/136 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3651 event pairs, 0 based on Foata normal form. 8/706 useless extension candidates. Maximal degree in co-relation 777. Up to 48 conditions per place. [2022-09-16 11:42:30,941 INFO L137 encePairwiseOnDemand]: 230/241 looper letters, 41 selfloop transitions, 27 changer transitions 0/247 dead transitions. [2022-09-16 11:42:30,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 247 transitions, 836 flow [2022-09-16 11:42:30,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:42:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:42:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1456 transitions. [2022-09-16 11:42:30,945 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8630705394190872 [2022-09-16 11:42:30,945 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1456 transitions. [2022-09-16 11:42:30,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1456 transitions. [2022-09-16 11:42:30,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:30,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1456 transitions. [2022-09-16 11:42:30,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 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 11:42:30,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 11:42:30,953 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 11:42:30,953 INFO L175 Difference]: Start difference. First operand has 227 places, 241 transitions, 718 flow. Second operand 7 states and 1456 transitions. [2022-09-16 11:42:30,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 247 transitions, 836 flow [2022-09-16 11:42:30,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 247 transitions, 762 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-09-16 11:42:30,965 INFO L231 Difference]: Finished difference. Result has 222 places, 233 transitions, 644 flow [2022-09-16 11:42:30,965 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=644, PETRI_PLACES=222, PETRI_TRANSITIONS=233} [2022-09-16 11:42:30,967 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 14 predicate places. [2022-09-16 11:42:30,968 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 233 transitions, 644 flow [2022-09-16 11:42:30,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 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 11:42:30,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:30,969 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:30,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:42:31,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:42:31,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash -777088423, now seen corresponding path program 2 times [2022-09-16 11:42:31,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:31,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152568833] [2022-09-16 11:42:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:31,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:31,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:31,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152568833] [2022-09-16 11:42:31,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152568833] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:42:31,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260097702] [2022-09-16 11:42:31,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:42:31,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:31,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:31,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:42:31,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:42:31,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:42:31,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:42:31,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:42:31,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:42:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:42:31,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:42:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:42:31,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260097702] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:42:31,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:42:31,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-09-16 11:42:31,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421076000] [2022-09-16 11:42:31,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:42:31,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:42:31,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:31,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:42:31,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:42:31,670 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-09-16 11:42:31,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 233 transitions, 644 flow. Second operand has 18 states, 18 states have (on average 195.0) internal successors, (3510), 18 states have internal predecessors, (3510), 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 11:42:31,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:31,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-09-16 11:42:31,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:32,255 INFO L130 PetriNetUnfolder]: 55/912 cut-off events. [2022-09-16 11:42:32,256 INFO L131 PetriNetUnfolder]: For 120/126 co-relation queries the response was YES. [2022-09-16 11:42:32,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 912 events. 55/912 cut-off events. For 120/126 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4460 event pairs, 0 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 784. Up to 15 conditions per place. [2022-09-16 11:42:32,267 INFO L137 encePairwiseOnDemand]: 225/241 looper letters, 89 selfloop transitions, 43 changer transitions 0/301 dead transitions. [2022-09-16 11:42:32,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 301 transitions, 1074 flow [2022-09-16 11:42:32,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-16 11:42:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-16 11:42:32,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3954 transitions. [2022-09-16 11:42:32,277 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8203319502074689 [2022-09-16 11:42:32,278 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3954 transitions. [2022-09-16 11:42:32,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3954 transitions. [2022-09-16 11:42:32,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:32,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3954 transitions. [2022-09-16 11:42:32,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 197.7) internal successors, (3954), 20 states have internal predecessors, (3954), 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 11:42:32,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 241.0) internal successors, (5061), 21 states have internal predecessors, (5061), 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 11:42:32,301 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 241.0) internal successors, (5061), 21 states have internal predecessors, (5061), 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 11:42:32,302 INFO L175 Difference]: Start difference. First operand has 222 places, 233 transitions, 644 flow. Second operand 20 states and 3954 transitions. [2022-09-16 11:42:32,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 301 transitions, 1074 flow [2022-09-16 11:42:32,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 301 transitions, 1021 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 11:42:32,311 INFO L231 Difference]: Finished difference. Result has 231 places, 236 transitions, 690 flow [2022-09-16 11:42:32,311 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=690, PETRI_PLACES=231, PETRI_TRANSITIONS=236} [2022-09-16 11:42:32,313 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 23 predicate places. [2022-09-16 11:42:32,313 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 236 transitions, 690 flow [2022-09-16 11:42:32,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 195.0) internal successors, (3510), 18 states have internal predecessors, (3510), 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 11:42:32,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:32,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:32,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:42:32,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:32,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:32,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash -277098219, now seen corresponding path program 1 times [2022-09-16 11:42:32,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:32,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862551000] [2022-09-16 11:42:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:32,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:32,628 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 11:42:32,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:32,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862551000] [2022-09-16 11:42:32,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862551000] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:32,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:32,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:42:32,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958422962] [2022-09-16 11:42:32,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:32,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:42:32,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:32,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:42:32,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:42:32,631 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 241 [2022-09-16 11:42:32,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 236 transitions, 690 flow. Second operand has 4 states, 4 states have (on average 218.5) internal successors, (874), 4 states have internal predecessors, (874), 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 11:42:32,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:32,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 241 [2022-09-16 11:42:32,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:32,898 INFO L130 PetriNetUnfolder]: 133/1404 cut-off events. [2022-09-16 11:42:32,898 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2022-09-16 11:42:32,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 1404 events. 133/1404 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 9114 event pairs, 36 based on Foata normal form. 0/1260 useless extension candidates. Maximal degree in co-relation 418. Up to 145 conditions per place. [2022-09-16 11:42:32,908 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 18 selfloop transitions, 3 changer transitions 0/245 dead transitions. [2022-09-16 11:42:32,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 245 transitions, 755 flow [2022-09-16 11:42:32,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:42:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:42:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1107 transitions. [2022-09-16 11:42:32,912 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9186721991701244 [2022-09-16 11:42:32,912 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1107 transitions. [2022-09-16 11:42:32,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1107 transitions. [2022-09-16 11:42:32,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:32,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1107 transitions. [2022-09-16 11:42:32,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.4) internal successors, (1107), 5 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:32,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:32,918 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:32,918 INFO L175 Difference]: Start difference. First operand has 231 places, 236 transitions, 690 flow. Second operand 5 states and 1107 transitions. [2022-09-16 11:42:32,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 245 transitions, 755 flow [2022-09-16 11:42:32,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 245 transitions, 662 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-09-16 11:42:32,923 INFO L231 Difference]: Finished difference. Result has 223 places, 238 transitions, 618 flow [2022-09-16 11:42:32,924 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=618, PETRI_PLACES=223, PETRI_TRANSITIONS=238} [2022-09-16 11:42:32,925 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 15 predicate places. [2022-09-16 11:42:32,925 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 238 transitions, 618 flow [2022-09-16 11:42:32,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.5) internal successors, (874), 4 states have internal predecessors, (874), 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 11:42:32,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:32,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:32,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:42:32,926 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:32,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:32,927 INFO L85 PathProgramCache]: Analyzing trace with hash 90993818, now seen corresponding path program 1 times [2022-09-16 11:42:32,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:32,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419509986] [2022-09-16 11:42:32,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:32,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:32,991 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 11:42:32,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:32,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419509986] [2022-09-16 11:42:32,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419509986] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:32,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:32,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:42:32,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421243601] [2022-09-16 11:42:32,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:32,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:42:32,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:32,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:42:32,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:42:32,995 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 241 [2022-09-16 11:42:32,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 238 transitions, 618 flow. Second operand has 5 states, 5 states have (on average 215.6) internal successors, (1078), 5 states have internal predecessors, (1078), 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 11:42:32,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:32,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 241 [2022-09-16 11:42:32,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:33,257 INFO L130 PetriNetUnfolder]: 181/1656 cut-off events. [2022-09-16 11:42:33,257 INFO L131 PetriNetUnfolder]: For 140/140 co-relation queries the response was YES. [2022-09-16 11:42:33,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2433 conditions, 1656 events. 181/1656 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 12027 event pairs, 84 based on Foata normal form. 12/1530 useless extension candidates. Maximal degree in co-relation 1987. Up to 301 conditions per place. [2022-09-16 11:42:33,274 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 25 selfloop transitions, 5 changer transitions 0/251 dead transitions. [2022-09-16 11:42:33,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 251 transitions, 715 flow [2022-09-16 11:42:33,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:42:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:42:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1527 transitions. [2022-09-16 11:42:33,278 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9051570835803201 [2022-09-16 11:42:33,279 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1527 transitions. [2022-09-16 11:42:33,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1527 transitions. [2022-09-16 11:42:33,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:33,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1527 transitions. [2022-09-16 11:42:33,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 218.14285714285714) internal successors, (1527), 7 states have internal predecessors, (1527), 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 11:42:33,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 11:42:33,286 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 11:42:33,286 INFO L175 Difference]: Start difference. First operand has 223 places, 238 transitions, 618 flow. Second operand 7 states and 1527 transitions. [2022-09-16 11:42:33,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 251 transitions, 715 flow [2022-09-16 11:42:33,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 251 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:42:33,293 INFO L231 Difference]: Finished difference. Result has 233 places, 242 transitions, 658 flow [2022-09-16 11:42:33,294 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=658, PETRI_PLACES=233, PETRI_TRANSITIONS=242} [2022-09-16 11:42:33,294 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 25 predicate places. [2022-09-16 11:42:33,294 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 242 transitions, 658 flow [2022-09-16 11:42:33,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.6) internal successors, (1078), 5 states have internal predecessors, (1078), 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 11:42:33,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:33,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:33,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:42:33,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:33,297 INFO L85 PathProgramCache]: Analyzing trace with hash -73326470, now seen corresponding path program 1 times [2022-09-16 11:42:33,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:33,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932594131] [2022-09-16 11:42:33,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:33,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:33,343 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 11:42:33,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:33,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932594131] [2022-09-16 11:42:33,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932594131] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:33,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:33,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:42:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534337562] [2022-09-16 11:42:33,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:33,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:42:33,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:33,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:42:33,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:42:33,345 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 241 [2022-09-16 11:42:33,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 242 transitions, 658 flow. Second operand has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 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 11:42:33,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:33,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 241 [2022-09-16 11:42:33,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:33,806 INFO L130 PetriNetUnfolder]: 283/3222 cut-off events. [2022-09-16 11:42:33,807 INFO L131 PetriNetUnfolder]: For 320/326 co-relation queries the response was YES. [2022-09-16 11:42:33,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4592 conditions, 3222 events. 283/3222 cut-off events. For 320/326 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 28473 event pairs, 36 based on Foata normal form. 0/2910 useless extension candidates. Maximal degree in co-relation 3883. Up to 295 conditions per place. [2022-09-16 11:42:33,841 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 30 selfloop transitions, 4 changer transitions 0/258 dead transitions. [2022-09-16 11:42:33,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 258 transitions, 763 flow [2022-09-16 11:42:33,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:42:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:42:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1091 transitions. [2022-09-16 11:42:33,844 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9053941908713693 [2022-09-16 11:42:33,844 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1091 transitions. [2022-09-16 11:42:33,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1091 transitions. [2022-09-16 11:42:33,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:33,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1091 transitions. [2022-09-16 11:42:33,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 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 11:42:33,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:33,851 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:33,851 INFO L175 Difference]: Start difference. First operand has 233 places, 242 transitions, 658 flow. Second operand 5 states and 1091 transitions. [2022-09-16 11:42:33,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 258 transitions, 763 flow [2022-09-16 11:42:33,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 258 transitions, 758 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-09-16 11:42:33,862 INFO L231 Difference]: Finished difference. Result has 239 places, 245 transitions, 683 flow [2022-09-16 11:42:33,862 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=683, PETRI_PLACES=239, PETRI_TRANSITIONS=245} [2022-09-16 11:42:33,863 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 31 predicate places. [2022-09-16 11:42:33,863 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 245 transitions, 683 flow [2022-09-16 11:42:33,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 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 11:42:33,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:33,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:33,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:42:33,864 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:33,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:33,864 INFO L85 PathProgramCache]: Analyzing trace with hash 19058436, now seen corresponding path program 1 times [2022-09-16 11:42:33,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:33,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279451125] [2022-09-16 11:42:33,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:33,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:33,905 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 11:42:33,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:33,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279451125] [2022-09-16 11:42:33,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279451125] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:33,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:33,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:42:33,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742679596] [2022-09-16 11:42:33,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:33,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:42:33,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:42:33,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:42:33,908 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 241 [2022-09-16 11:42:33,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 245 transitions, 683 flow. Second operand has 4 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 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 11:42:33,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:33,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 241 [2022-09-16 11:42:33,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:34,514 INFO L130 PetriNetUnfolder]: 547/4128 cut-off events. [2022-09-16 11:42:34,515 INFO L131 PetriNetUnfolder]: For 602/638 co-relation queries the response was YES. [2022-09-16 11:42:34,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5597 conditions, 4128 events. 547/4128 cut-off events. For 602/638 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 43707 event pairs, 216 based on Foata normal form. 0/3474 useless extension candidates. Maximal degree in co-relation 3205. Up to 595 conditions per place. [2022-09-16 11:42:34,560 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 17 selfloop transitions, 3 changer transitions 0/253 dead transitions. [2022-09-16 11:42:34,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 253 transitions, 743 flow [2022-09-16 11:42:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:42:34,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:42:34,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1106 transitions. [2022-09-16 11:42:34,565 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9178423236514522 [2022-09-16 11:42:34,565 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1106 transitions. [2022-09-16 11:42:34,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1106 transitions. [2022-09-16 11:42:34,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:34,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1106 transitions. [2022-09-16 11:42:34,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 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 11:42:34,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:34,570 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:34,570 INFO L175 Difference]: Start difference. First operand has 239 places, 245 transitions, 683 flow. Second operand 5 states and 1106 transitions. [2022-09-16 11:42:34,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 253 transitions, 743 flow [2022-09-16 11:42:34,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 253 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:42:34,579 INFO L231 Difference]: Finished difference. Result has 245 places, 247 transitions, 702 flow [2022-09-16 11:42:34,580 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=702, PETRI_PLACES=245, PETRI_TRANSITIONS=247} [2022-09-16 11:42:34,582 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 37 predicate places. [2022-09-16 11:42:34,583 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 247 transitions, 702 flow [2022-09-16 11:42:34,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 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 11:42:34,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:34,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:34,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:42:34,583 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:34,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:34,584 INFO L85 PathProgramCache]: Analyzing trace with hash -829846007, now seen corresponding path program 1 times [2022-09-16 11:42:34,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:34,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835512573] [2022-09-16 11:42:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:34,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:34,649 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 11:42:34,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:34,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835512573] [2022-09-16 11:42:34,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835512573] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:34,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:34,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:42:34,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533831784] [2022-09-16 11:42:34,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:34,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:42:34,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:34,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:42:34,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:42:34,656 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 241 [2022-09-16 11:42:34,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 247 transitions, 702 flow. Second operand has 5 states, 5 states have (on average 215.8) internal successors, (1079), 5 states have internal predecessors, (1079), 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 11:42:34,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:34,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 241 [2022-09-16 11:42:34,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:35,487 INFO L130 PetriNetUnfolder]: 865/5172 cut-off events. [2022-09-16 11:42:35,488 INFO L131 PetriNetUnfolder]: For 1328/1364 co-relation queries the response was YES. [2022-09-16 11:42:35,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7874 conditions, 5172 events. 865/5172 cut-off events. For 1328/1364 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 60707 event pairs, 504 based on Foata normal form. 42/4308 useless extension candidates. Maximal degree in co-relation 6271. Up to 1255 conditions per place. [2022-09-16 11:42:35,529 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 24 selfloop transitions, 5 changer transitions 0/259 dead transitions. [2022-09-16 11:42:35,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 259 transitions, 794 flow [2022-09-16 11:42:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:42:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:42:35,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1526 transitions. [2022-09-16 11:42:35,538 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9045643153526971 [2022-09-16 11:42:35,539 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1526 transitions. [2022-09-16 11:42:35,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1526 transitions. [2022-09-16 11:42:35,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:35,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1526 transitions. [2022-09-16 11:42:35,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 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 11:42:35,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 11:42:35,550 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 11:42:35,550 INFO L175 Difference]: Start difference. First operand has 245 places, 247 transitions, 702 flow. Second operand 7 states and 1526 transitions. [2022-09-16 11:42:35,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 259 transitions, 794 flow [2022-09-16 11:42:35,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 259 transitions, 793 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:42:35,563 INFO L231 Difference]: Finished difference. Result has 255 places, 251 transitions, 742 flow [2022-09-16 11:42:35,563 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=742, PETRI_PLACES=255, PETRI_TRANSITIONS=251} [2022-09-16 11:42:35,564 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 47 predicate places. [2022-09-16 11:42:35,564 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 251 transitions, 742 flow [2022-09-16 11:42:35,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.8) internal successors, (1079), 5 states have internal predecessors, (1079), 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 11:42:35,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:35,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:35,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:42:35,565 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:35,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash -994166295, now seen corresponding path program 1 times [2022-09-16 11:42:35,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:35,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944488112] [2022-09-16 11:42:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:35,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:35,628 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 11:42:35,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:35,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944488112] [2022-09-16 11:42:35,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944488112] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:35,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:35,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:42:35,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011427110] [2022-09-16 11:42:35,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:35,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:42:35,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:35,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:42:35,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:42:35,631 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 241 [2022-09-16 11:42:35,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 251 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 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 11:42:35,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:35,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 241 [2022-09-16 11:42:35,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:37,100 INFO L130 PetriNetUnfolder]: 1015/7920 cut-off events. [2022-09-16 11:42:37,100 INFO L131 PetriNetUnfolder]: For 2048/2084 co-relation queries the response was YES. [2022-09-16 11:42:37,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12649 conditions, 7920 events. 1015/7920 cut-off events. For 2048/2084 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 99664 event pairs, 216 based on Foata normal form. 0/6660 useless extension candidates. Maximal degree in co-relation 10177. Up to 1213 conditions per place. [2022-09-16 11:42:37,173 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 29 selfloop transitions, 4 changer transitions 0/266 dead transitions. [2022-09-16 11:42:37,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 266 transitions, 842 flow [2022-09-16 11:42:37,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:42:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:42:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1090 transitions. [2022-09-16 11:42:37,176 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9045643153526971 [2022-09-16 11:42:37,176 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1090 transitions. [2022-09-16 11:42:37,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1090 transitions. [2022-09-16 11:42:37,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:37,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1090 transitions. [2022-09-16 11:42:37,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 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 11:42:37,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:37,182 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:37,182 INFO L175 Difference]: Start difference. First operand has 255 places, 251 transitions, 742 flow. Second operand 5 states and 1090 transitions. [2022-09-16 11:42:37,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 266 transitions, 842 flow [2022-09-16 11:42:37,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 266 transitions, 837 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-09-16 11:42:37,206 INFO L231 Difference]: Finished difference. Result has 261 places, 254 transitions, 767 flow [2022-09-16 11:42:37,207 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=767, PETRI_PLACES=261, PETRI_TRANSITIONS=254} [2022-09-16 11:42:37,207 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 53 predicate places. [2022-09-16 11:42:37,207 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 254 transitions, 767 flow [2022-09-16 11:42:37,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 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 11:42:37,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:37,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:37,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:42:37,208 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:37,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:37,209 INFO L85 PathProgramCache]: Analyzing trace with hash -114580901, now seen corresponding path program 1 times [2022-09-16 11:42:37,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:37,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184853526] [2022-09-16 11:42:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:37,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:37,291 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 11:42:37,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:37,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184853526] [2022-09-16 11:42:37,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184853526] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:37,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:37,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:42:37,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252398266] [2022-09-16 11:42:37,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:37,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:42:37,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:37,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:42:37,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:42:37,294 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 241 [2022-09-16 11:42:37,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 254 transitions, 767 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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 11:42:37,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:37,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 241 [2022-09-16 11:42:37,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:38,031 INFO L130 PetriNetUnfolder]: 247/4080 cut-off events. [2022-09-16 11:42:38,031 INFO L131 PetriNetUnfolder]: For 722/794 co-relation queries the response was YES. [2022-09-16 11:42:38,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6407 conditions, 4080 events. 247/4080 cut-off events. For 722/794 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 43309 event pairs, 0 based on Foata normal form. 72/3480 useless extension candidates. Maximal degree in co-relation 4010. Up to 1333 conditions per place. [2022-09-16 11:42:38,086 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 8 selfloop transitions, 2 changer transitions 2/257 dead transitions. [2022-09-16 11:42:38,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 257 transitions, 799 flow [2022-09-16 11:42:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:42:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:42:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 668 transitions. [2022-09-16 11:42:38,088 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9239280774550485 [2022-09-16 11:42:38,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 668 transitions. [2022-09-16 11:42:38,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 668 transitions. [2022-09-16 11:42:38,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:38,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 668 transitions. [2022-09-16 11:42:38,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 11:42:38,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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 11:42:38,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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 11:42:38,092 INFO L175 Difference]: Start difference. First operand has 261 places, 254 transitions, 767 flow. Second operand 3 states and 668 transitions. [2022-09-16 11:42:38,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 257 transitions, 799 flow [2022-09-16 11:42:38,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 257 transitions, 797 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:42:38,101 INFO L231 Difference]: Finished difference. Result has 263 places, 254 transitions, 775 flow [2022-09-16 11:42:38,101 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=775, PETRI_PLACES=263, PETRI_TRANSITIONS=254} [2022-09-16 11:42:38,102 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 55 predicate places. [2022-09-16 11:42:38,102 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 254 transitions, 775 flow [2022-09-16 11:42:38,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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 11:42:38,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:38,102 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:38,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:42:38,103 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:38,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:38,103 INFO L85 PathProgramCache]: Analyzing trace with hash 232762863, now seen corresponding path program 1 times [2022-09-16 11:42:38,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:38,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572858172] [2022-09-16 11:42:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:38,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:42:38,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:38,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572858172] [2022-09-16 11:42:38,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572858172] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:38,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:38,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:42:38,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090634702] [2022-09-16 11:42:38,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:38,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:42:38,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:38,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:42:38,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:42:38,148 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 241 [2022-09-16 11:42:38,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 254 transitions, 775 flow. Second operand has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 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 11:42:38,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:38,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 241 [2022-09-16 11:42:38,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:39,052 INFO L130 PetriNetUnfolder]: 175/4314 cut-off events. [2022-09-16 11:42:39,052 INFO L131 PetriNetUnfolder]: For 681/2925 co-relation queries the response was YES. [2022-09-16 11:42:39,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6972 conditions, 4314 events. 175/4314 cut-off events. For 681/2925 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 47756 event pairs, 12 based on Foata normal form. 96/4050 useless extension candidates. Maximal degree in co-relation 5186. Up to 541 conditions per place. [2022-09-16 11:42:39,126 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 19 selfloop transitions, 8 changer transitions 0/260 dead transitions. [2022-09-16 11:42:39,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 260 transitions, 844 flow [2022-09-16 11:42:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:42:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:42:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1080 transitions. [2022-09-16 11:42:39,130 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8962655601659751 [2022-09-16 11:42:39,130 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1080 transitions. [2022-09-16 11:42:39,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1080 transitions. [2022-09-16 11:42:39,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:39,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1080 transitions. [2022-09-16 11:42:39,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 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 11:42:39,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:39,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:39,137 INFO L175 Difference]: Start difference. First operand has 263 places, 254 transitions, 775 flow. Second operand 5 states and 1080 transitions. [2022-09-16 11:42:39,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 260 transitions, 844 flow [2022-09-16 11:42:39,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 260 transitions, 840 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:42:39,149 INFO L231 Difference]: Finished difference. Result has 265 places, 254 transitions, 791 flow [2022-09-16 11:42:39,150 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=791, PETRI_PLACES=265, PETRI_TRANSITIONS=254} [2022-09-16 11:42:39,151 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 57 predicate places. [2022-09-16 11:42:39,151 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 254 transitions, 791 flow [2022-09-16 11:42:39,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 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 11:42:39,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:39,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:39,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:42:39,152 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:39,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:39,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1612504865, now seen corresponding path program 1 times [2022-09-16 11:42:39,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:39,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565276251] [2022-09-16 11:42:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:39,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:39,213 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 11:42:39,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:39,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565276251] [2022-09-16 11:42:39,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565276251] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:39,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:39,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:42:39,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411748166] [2022-09-16 11:42:39,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:39,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:42:39,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:39,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:42:39,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:42:39,218 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 241 [2022-09-16 11:42:39,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 254 transitions, 791 flow. Second operand has 5 states, 5 states have (on average 213.4) internal successors, (1067), 5 states have internal predecessors, (1067), 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 11:42:39,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:39,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 241 [2022-09-16 11:42:39,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:40,803 INFO L130 PetriNetUnfolder]: 1453/9882 cut-off events. [2022-09-16 11:42:40,804 INFO L131 PetriNetUnfolder]: For 3885/3927 co-relation queries the response was YES. [2022-09-16 11:42:40,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17916 conditions, 9882 events. 1453/9882 cut-off events. For 3885/3927 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 136602 event pairs, 630 based on Foata normal form. 84/8538 useless extension candidates. Maximal degree in co-relation 9794. Up to 1657 conditions per place. [2022-09-16 11:42:40,980 INFO L137 encePairwiseOnDemand]: 233/241 looper letters, 26 selfloop transitions, 10 changer transitions 2/271 dead transitions. [2022-09-16 11:42:40,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 271 transitions, 930 flow [2022-09-16 11:42:40,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:42:40,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:42:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1300 transitions. [2022-09-16 11:42:40,984 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8990318118948825 [2022-09-16 11:42:40,984 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1300 transitions. [2022-09-16 11:42:40,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1300 transitions. [2022-09-16 11:42:40,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:40,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1300 transitions. [2022-09-16 11:42:40,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 216.66666666666666) internal successors, (1300), 6 states have internal predecessors, (1300), 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 11:42:40,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 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 11:42:40,990 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 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 11:42:40,990 INFO L175 Difference]: Start difference. First operand has 265 places, 254 transitions, 791 flow. Second operand 6 states and 1300 transitions. [2022-09-16 11:42:40,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 271 transitions, 930 flow [2022-09-16 11:42:41,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 271 transitions, 918 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:42:41,013 INFO L231 Difference]: Finished difference. Result has 271 places, 260 transitions, 857 flow [2022-09-16 11:42:41,014 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=857, PETRI_PLACES=271, PETRI_TRANSITIONS=260} [2022-09-16 11:42:41,015 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 63 predicate places. [2022-09-16 11:42:41,015 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 260 transitions, 857 flow [2022-09-16 11:42:41,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 213.4) internal successors, (1067), 5 states have internal predecessors, (1067), 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 11:42:41,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:41,016 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:41,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:42:41,016 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:41,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1374285200, now seen corresponding path program 1 times [2022-09-16 11:42:41,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:41,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187666565] [2022-09-16 11:42:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-16 11:42:41,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:41,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187666565] [2022-09-16 11:42:41,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187666565] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:41,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:41,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:42:41,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684338594] [2022-09-16 11:42:41,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:41,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:42:41,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:41,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:42:41,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:42:41,070 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 241 [2022-09-16 11:42:41,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 260 transitions, 857 flow. Second operand has 5 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 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 11:42:41,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:41,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 241 [2022-09-16 11:42:41,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:41,679 INFO L130 PetriNetUnfolder]: 21/2835 cut-off events. [2022-09-16 11:42:41,679 INFO L131 PetriNetUnfolder]: For 1345/1715 co-relation queries the response was YES. [2022-09-16 11:42:41,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4955 conditions, 2835 events. 21/2835 cut-off events. For 1345/1715 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 28928 event pairs, 0 based on Foata normal form. 2/2567 useless extension candidates. Maximal degree in co-relation 4208. Up to 384 conditions per place. [2022-09-16 11:42:41,732 INFO L137 encePairwiseOnDemand]: 231/241 looper letters, 42 selfloop transitions, 12 changer transitions 0/263 dead transitions. [2022-09-16 11:42:41,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 263 transitions, 972 flow [2022-09-16 11:42:41,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:42:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:42:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1043 transitions. [2022-09-16 11:42:41,737 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8655601659751038 [2022-09-16 11:42:41,737 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1043 transitions. [2022-09-16 11:42:41,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1043 transitions. [2022-09-16 11:42:41,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:41,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1043 transitions. [2022-09-16 11:42:41,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.6) internal successors, (1043), 5 states have internal predecessors, (1043), 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 11:42:41,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:41,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:41,744 INFO L175 Difference]: Start difference. First operand has 271 places, 260 transitions, 857 flow. Second operand 5 states and 1043 transitions. [2022-09-16 11:42:41,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 263 transitions, 972 flow [2022-09-16 11:42:41,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 263 transitions, 964 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-16 11:42:41,756 INFO L231 Difference]: Finished difference. Result has 274 places, 259 transitions, 876 flow [2022-09-16 11:42:41,756 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=876, PETRI_PLACES=274, PETRI_TRANSITIONS=259} [2022-09-16 11:42:41,757 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 66 predicate places. [2022-09-16 11:42:41,757 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 259 transitions, 876 flow [2022-09-16 11:42:41,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 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 11:42:41,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:41,758 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:41,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:42:41,758 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:41,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:41,759 INFO L85 PathProgramCache]: Analyzing trace with hash 625889832, now seen corresponding path program 1 times [2022-09-16 11:42:41,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:41,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326753525] [2022-09-16 11:42:41,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:41,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-09-16 11:42:41,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:41,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326753525] [2022-09-16 11:42:41,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326753525] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:42:41,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902644052] [2022-09-16 11:42:41,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:41,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:41,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:41,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:42:41,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:42:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:42,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:42:42,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:42:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-09-16 11:42:42,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:42:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-09-16 11:42:42,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902644052] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:42:42,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:42:42,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-09-16 11:42:42,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448209492] [2022-09-16 11:42:42,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:42:42,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:42:42,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:42,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:42:42,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:42:42,220 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-09-16 11:42:42,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 259 transitions, 876 flow. Second operand has 15 states, 15 states have (on average 194.66666666666666) internal successors, (2920), 15 states have internal predecessors, (2920), 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 11:42:42,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:42,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-09-16 11:42:42,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:42,761 INFO L130 PetriNetUnfolder]: 13/1761 cut-off events. [2022-09-16 11:42:42,762 INFO L131 PetriNetUnfolder]: For 764/986 co-relation queries the response was YES. [2022-09-16 11:42:42,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3129 conditions, 1761 events. 13/1761 cut-off events. For 764/986 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15102 event pairs, 0 based on Foata normal form. 4/1603 useless extension candidates. Maximal degree in co-relation 2832. Up to 229 conditions per place. [2022-09-16 11:42:42,788 INFO L137 encePairwiseOnDemand]: 225/241 looper letters, 52 selfloop transitions, 30 changer transitions 0/275 dead transitions. [2022-09-16 11:42:42,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 275 transitions, 1082 flow [2022-09-16 11:42:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:42:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:42:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2169 transitions. [2022-09-16 11:42:42,792 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-09-16 11:42:42,792 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2169 transitions. [2022-09-16 11:42:42,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2169 transitions. [2022-09-16 11:42:42,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:42,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2169 transitions. [2022-09-16 11:42:42,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 197.1818181818182) internal successors, (2169), 11 states have internal predecessors, (2169), 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 11:42:42,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 241.0) internal successors, (2892), 12 states have internal predecessors, (2892), 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 11:42:42,802 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 241.0) internal successors, (2892), 12 states have internal predecessors, (2892), 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 11:42:42,802 INFO L175 Difference]: Start difference. First operand has 274 places, 259 transitions, 876 flow. Second operand 11 states and 2169 transitions. [2022-09-16 11:42:42,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 275 transitions, 1082 flow [2022-09-16 11:42:42,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 275 transitions, 1062 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:42:42,812 INFO L231 Difference]: Finished difference. Result has 283 places, 259 transitions, 955 flow [2022-09-16 11:42:42,813 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=955, PETRI_PLACES=283, PETRI_TRANSITIONS=259} [2022-09-16 11:42:42,814 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 75 predicate places. [2022-09-16 11:42:42,814 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 259 transitions, 955 flow [2022-09-16 11:42:42,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 194.66666666666666) internal successors, (2920), 15 states have internal predecessors, (2920), 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 11:42:42,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:42,815 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:42,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:42:43,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:42:43,035 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:43,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:43,036 INFO L85 PathProgramCache]: Analyzing trace with hash 625599144, now seen corresponding path program 2 times [2022-09-16 11:42:43,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:43,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986053282] [2022-09-16 11:42:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:43,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-09-16 11:42:43,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:43,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986053282] [2022-09-16 11:42:43,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986053282] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:42:43,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046615453] [2022-09-16 11:42:43,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:42:43,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:43,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:43,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:42:43,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:42:43,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:42:43,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:42:43,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:42:43,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:42:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-09-16 11:42:43,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:42:43,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046615453] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:43,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:42:43,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-09-16 11:42:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969927295] [2022-09-16 11:42:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:43,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:42:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:43,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:42:43,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:42:43,356 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 241 [2022-09-16 11:42:43,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 259 transitions, 955 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 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 11:42:43,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:43,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 241 [2022-09-16 11:42:43,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:43,790 INFO L130 PetriNetUnfolder]: 85/2181 cut-off events. [2022-09-16 11:42:43,790 INFO L131 PetriNetUnfolder]: For 883/1981 co-relation queries the response was YES. [2022-09-16 11:42:43,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3962 conditions, 2181 events. 85/2181 cut-off events. For 883/1981 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 19600 event pairs, 0 based on Foata normal form. 45/2049 useless extension candidates. Maximal degree in co-relation 3500. Up to 321 conditions per place. [2022-09-16 11:42:43,811 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 17 selfloop transitions, 5 changer transitions 0/260 dead transitions. [2022-09-16 11:42:43,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 260 transitions, 1001 flow [2022-09-16 11:42:43,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:42:43,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:42:43,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 863 transitions. [2022-09-16 11:42:43,814 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8952282157676349 [2022-09-16 11:42:43,814 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 863 transitions. [2022-09-16 11:42:43,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 863 transitions. [2022-09-16 11:42:43,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:43,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 863 transitions. [2022-09-16 11:42:43,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 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 11:42:43,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 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 11:42:43,818 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 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 11:42:43,818 INFO L175 Difference]: Start difference. First operand has 283 places, 259 transitions, 955 flow. Second operand 4 states and 863 transitions. [2022-09-16 11:42:43,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 260 transitions, 1001 flow [2022-09-16 11:42:43,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 260 transitions, 954 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-09-16 11:42:43,828 INFO L231 Difference]: Finished difference. Result has 276 places, 258 transitions, 914 flow [2022-09-16 11:42:43,829 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=914, PETRI_PLACES=276, PETRI_TRANSITIONS=258} [2022-09-16 11:42:43,829 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 68 predicate places. [2022-09-16 11:42:43,829 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 258 transitions, 914 flow [2022-09-16 11:42:43,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 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 11:42:43,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:43,830 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:43,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:42:44,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:42:44,057 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:44,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:44,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1082548167, now seen corresponding path program 1 times [2022-09-16 11:42:44,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:44,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82954] [2022-09-16 11:42:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:44,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:42:44,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:44,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82954] [2022-09-16 11:42:44,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82954] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:42:44,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535382872] [2022-09-16 11:42:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:44,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:44,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:44,177 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:42:44,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:42:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:44,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:42:44,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:42:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:42:44,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:42:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:42:44,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535382872] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:42:44,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:42:44,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-09-16 11:42:44,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746987157] [2022-09-16 11:42:44,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:42:44,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-16 11:42:44,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:44,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-16 11:42:44,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:42:44,651 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-09-16 11:42:44,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 258 transitions, 914 flow. Second operand has 22 states, 22 states have (on average 194.9090909090909) internal successors, (4288), 22 states have internal predecessors, (4288), 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 11:42:44,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:44,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-09-16 11:42:44,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:45,102 INFO L130 PetriNetUnfolder]: 5/686 cut-off events. [2022-09-16 11:42:45,102 INFO L131 PetriNetUnfolder]: For 320/394 co-relation queries the response was YES. [2022-09-16 11:42:45,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 686 events. 5/686 cut-off events. For 320/394 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3463 event pairs, 0 based on Foata normal form. 4/636 useless extension candidates. Maximal degree in co-relation 1123. Up to 80 conditions per place. [2022-09-16 11:42:45,113 INFO L137 encePairwiseOnDemand]: 225/241 looper letters, 58 selfloop transitions, 34 changer transitions 0/284 dead transitions. [2022-09-16 11:42:45,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 284 transitions, 1172 flow [2022-09-16 11:42:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:42:45,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:42:45,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3343 transitions. [2022-09-16 11:42:45,117 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8159628996826946 [2022-09-16 11:42:45,118 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3343 transitions. [2022-09-16 11:42:45,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3343 transitions. [2022-09-16 11:42:45,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:45,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3343 transitions. [2022-09-16 11:42:45,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 196.64705882352942) internal successors, (3343), 17 states have internal predecessors, (3343), 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 11:42:45,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 241.0) internal successors, (4338), 18 states have internal predecessors, (4338), 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 11:42:45,131 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 241.0) internal successors, (4338), 18 states have internal predecessors, (4338), 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 11:42:45,131 INFO L175 Difference]: Start difference. First operand has 276 places, 258 transitions, 914 flow. Second operand 17 states and 3343 transitions. [2022-09-16 11:42:45,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 284 transitions, 1172 flow [2022-09-16 11:42:45,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 284 transitions, 1162 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:42:45,139 INFO L231 Difference]: Finished difference. Result has 291 places, 256 transitions, 978 flow [2022-09-16 11:42:45,140 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=978, PETRI_PLACES=291, PETRI_TRANSITIONS=256} [2022-09-16 11:42:45,141 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 83 predicate places. [2022-09-16 11:42:45,141 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 256 transitions, 978 flow [2022-09-16 11:42:45,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 194.9090909090909) internal successors, (4288), 22 states have internal predecessors, (4288), 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 11:42:45,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:45,142 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:45,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:42:45,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-09-16 11:42:45,356 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:45,357 INFO L85 PathProgramCache]: Analyzing trace with hash -739442585, now seen corresponding path program 2 times [2022-09-16 11:42:45,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:45,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106430353] [2022-09-16 11:42:45,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:45,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-09-16 11:42:45,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:45,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106430353] [2022-09-16 11:42:45,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106430353] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:45,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:45,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:42:45,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639649485] [2022-09-16 11:42:45,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:45,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:42:45,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:42:45,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:42:45,440 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 241 [2022-09-16 11:42:45,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 256 transitions, 978 flow. Second operand has 5 states, 5 states have (on average 213.6) internal successors, (1068), 5 states have internal predecessors, (1068), 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 11:42:45,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:45,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 241 [2022-09-16 11:42:45,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:45,810 INFO L130 PetriNetUnfolder]: 243/1757 cut-off events. [2022-09-16 11:42:45,810 INFO L131 PetriNetUnfolder]: For 1094/1101 co-relation queries the response was YES. [2022-09-16 11:42:45,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3505 conditions, 1757 events. 243/1757 cut-off events. For 1094/1101 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16246 event pairs, 161 based on Foata normal form. 14/1534 useless extension candidates. Maximal degree in co-relation 3170. Up to 468 conditions per place. [2022-09-16 11:42:45,818 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 20 selfloop transitions, 7 changer transitions 6/262 dead transitions. [2022-09-16 11:42:45,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 262 transitions, 1057 flow [2022-09-16 11:42:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:42:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:42:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1504 transitions. [2022-09-16 11:42:45,821 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8915234143449912 [2022-09-16 11:42:45,821 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1504 transitions. [2022-09-16 11:42:45,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1504 transitions. [2022-09-16 11:42:45,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:45,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1504 transitions. [2022-09-16 11:42:45,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 214.85714285714286) internal successors, (1504), 7 states have internal predecessors, (1504), 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 11:42:45,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 11:42:45,826 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 11:42:45,826 INFO L175 Difference]: Start difference. First operand has 291 places, 256 transitions, 978 flow. Second operand 7 states and 1504 transitions. [2022-09-16 11:42:45,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 262 transitions, 1057 flow [2022-09-16 11:42:45,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 262 transitions, 986 flow, removed 0 selfloop flow, removed 17 redundant places. [2022-09-16 11:42:45,836 INFO L231 Difference]: Finished difference. Result has 280 places, 255 transitions, 915 flow [2022-09-16 11:42:45,836 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=915, PETRI_PLACES=280, PETRI_TRANSITIONS=255} [2022-09-16 11:42:45,837 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 72 predicate places. [2022-09-16 11:42:45,837 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 255 transitions, 915 flow [2022-09-16 11:42:45,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 213.6) internal successors, (1068), 5 states have internal predecessors, (1068), 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 11:42:45,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:45,838 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:45,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:42:45,838 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:45,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash 971940742, now seen corresponding path program 1 times [2022-09-16 11:42:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:45,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604300123] [2022-09-16 11:42:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:45,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-09-16 11:42:45,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:45,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604300123] [2022-09-16 11:42:45,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604300123] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:45,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:45,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:42:45,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880497666] [2022-09-16 11:42:45,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:45,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:42:45,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:42:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:42:45,904 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 241 [2022-09-16 11:42:45,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 255 transitions, 915 flow. Second operand has 6 states, 6 states have (on average 210.33333333333334) internal successors, (1262), 6 states have internal predecessors, (1262), 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 11:42:45,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:45,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 241 [2022-09-16 11:42:45,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:46,281 INFO L130 PetriNetUnfolder]: 313/1799 cut-off events. [2022-09-16 11:42:46,281 INFO L131 PetriNetUnfolder]: For 1281/1288 co-relation queries the response was YES. [2022-09-16 11:42:46,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3628 conditions, 1799 events. 313/1799 cut-off events. For 1281/1288 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 17151 event pairs, 203 based on Foata normal form. 28/1538 useless extension candidates. Maximal degree in co-relation 3327. Up to 558 conditions per place. [2022-09-16 11:42:46,297 INFO L137 encePairwiseOnDemand]: 233/241 looper letters, 25 selfloop transitions, 7 changer transitions 8/265 dead transitions. [2022-09-16 11:42:46,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 265 transitions, 1026 flow [2022-09-16 11:42:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:42:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:42:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1699 transitions. [2022-09-16 11:42:46,300 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8812240663900415 [2022-09-16 11:42:46,300 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1699 transitions. [2022-09-16 11:42:46,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1699 transitions. [2022-09-16 11:42:46,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:46,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1699 transitions. [2022-09-16 11:42:46,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 212.375) internal successors, (1699), 8 states have internal predecessors, (1699), 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 11:42:46,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 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 11:42:46,305 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 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 11:42:46,305 INFO L175 Difference]: Start difference. First operand has 280 places, 255 transitions, 915 flow. Second operand 8 states and 1699 transitions. [2022-09-16 11:42:46,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 265 transitions, 1026 flow [2022-09-16 11:42:46,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 265 transitions, 1017 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-09-16 11:42:46,316 INFO L231 Difference]: Finished difference. Result has 287 places, 256 transitions, 935 flow [2022-09-16 11:42:46,316 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=935, PETRI_PLACES=287, PETRI_TRANSITIONS=256} [2022-09-16 11:42:46,316 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 79 predicate places. [2022-09-16 11:42:46,317 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 256 transitions, 935 flow [2022-09-16 11:42:46,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.33333333333334) internal successors, (1262), 6 states have internal predecessors, (1262), 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 11:42:46,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:46,317 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:46,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:42:46,318 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:46,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:46,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1830574104, now seen corresponding path program 1 times [2022-09-16 11:42:46,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:46,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864088672] [2022-09-16 11:42:46,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:46,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-09-16 11:42:46,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:46,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864088672] [2022-09-16 11:42:46,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864088672] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:46,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:46,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:42:46,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788651129] [2022-09-16 11:42:46,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:46,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:42:46,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:46,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:42:46,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:42:46,373 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 241 [2022-09-16 11:42:46,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 256 transitions, 935 flow. Second operand has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 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 11:42:46,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:46,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 241 [2022-09-16 11:42:46,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:46,690 INFO L130 PetriNetUnfolder]: 285/1637 cut-off events. [2022-09-16 11:42:46,690 INFO L131 PetriNetUnfolder]: For 1160/1167 co-relation queries the response was YES. [2022-09-16 11:42:46,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3256 conditions, 1637 events. 285/1637 cut-off events. For 1160/1167 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15179 event pairs, 168 based on Foata normal form. 16/1384 useless extension candidates. Maximal degree in co-relation 2987. Up to 405 conditions per place. [2022-09-16 11:42:46,702 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 26 selfloop transitions, 9 changer transitions 4/264 dead transitions. [2022-09-16 11:42:46,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 264 transitions, 1024 flow [2022-09-16 11:42:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:42:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:42:46,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1531 transitions. [2022-09-16 11:42:46,704 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9075281564908121 [2022-09-16 11:42:46,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1531 transitions. [2022-09-16 11:42:46,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1531 transitions. [2022-09-16 11:42:46,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:46,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1531 transitions. [2022-09-16 11:42:46,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 218.71428571428572) internal successors, (1531), 7 states have internal predecessors, (1531), 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 11:42:46,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 11:42:46,709 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 11:42:46,709 INFO L175 Difference]: Start difference. First operand has 287 places, 256 transitions, 935 flow. Second operand 7 states and 1531 transitions. [2022-09-16 11:42:46,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 264 transitions, 1024 flow [2022-09-16 11:42:46,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 264 transitions, 993 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-09-16 11:42:46,719 INFO L231 Difference]: Finished difference. Result has 281 places, 253 transitions, 914 flow [2022-09-16 11:42:46,720 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=914, PETRI_PLACES=281, PETRI_TRANSITIONS=253} [2022-09-16 11:42:46,720 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 73 predicate places. [2022-09-16 11:42:46,720 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 253 transitions, 914 flow [2022-09-16 11:42:46,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 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 11:42:46,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:46,721 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:46,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:42:46,721 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:46,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash 682256614, now seen corresponding path program 1 times [2022-09-16 11:42:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:46,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185072344] [2022-09-16 11:42:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:46,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-09-16 11:42:46,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:46,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185072344] [2022-09-16 11:42:46,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185072344] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:46,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:46,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:42:46,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303689886] [2022-09-16 11:42:46,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:46,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:42:46,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:46,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:42:46,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:42:46,781 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 241 [2022-09-16 11:42:46,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 253 transitions, 914 flow. Second operand has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 11:42:46,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:46,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 241 [2022-09-16 11:42:46,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:47,065 INFO L130 PetriNetUnfolder]: 173/1398 cut-off events. [2022-09-16 11:42:47,066 INFO L131 PetriNetUnfolder]: For 690/697 co-relation queries the response was YES. [2022-09-16 11:42:47,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2754 conditions, 1398 events. 173/1398 cut-off events. For 690/697 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11505 event pairs, 14 based on Foata normal form. 8/1220 useless extension candidates. Maximal degree in co-relation 2455. Up to 180 conditions per place. [2022-09-16 11:42:47,081 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 16 selfloop transitions, 8 changer transitions 0/257 dead transitions. [2022-09-16 11:42:47,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 257 transitions, 971 flow [2022-09-16 11:42:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:42:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:42:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1077 transitions. [2022-09-16 11:42:47,083 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8937759336099586 [2022-09-16 11:42:47,083 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1077 transitions. [2022-09-16 11:42:47,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1077 transitions. [2022-09-16 11:42:47,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:47,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1077 transitions. [2022-09-16 11:42:47,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 215.4) internal successors, (1077), 5 states have internal predecessors, (1077), 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 11:42:47,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:47,088 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 11:42:47,088 INFO L175 Difference]: Start difference. First operand has 281 places, 253 transitions, 914 flow. Second operand 5 states and 1077 transitions. [2022-09-16 11:42:47,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 257 transitions, 971 flow [2022-09-16 11:42:47,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 257 transitions, 939 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-09-16 11:42:47,147 INFO L231 Difference]: Finished difference. Result has 277 places, 253 transitions, 902 flow [2022-09-16 11:42:47,148 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=902, PETRI_PLACES=277, PETRI_TRANSITIONS=253} [2022-09-16 11:42:47,148 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 69 predicate places. [2022-09-16 11:42:47,148 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 253 transitions, 902 flow [2022-09-16 11:42:47,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 11:42:47,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:47,149 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:47,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:42:47,149 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-09-16 11:42:47,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:47,150 INFO L85 PathProgramCache]: Analyzing trace with hash -324880763, now seen corresponding path program 1 times [2022-09-16 11:42:47,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:47,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350036435] [2022-09-16 11:42:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:47,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-09-16 11:42:47,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:47,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350036435] [2022-09-16 11:42:47,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350036435] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:42:47,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108669918] [2022-09-16 11:42:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:47,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:47,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:47,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:42:47,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:42:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:47,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:42:47,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:42:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-09-16 11:42:47,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:42:47,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108669918] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:47,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:42:47,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:42:47,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726686257] [2022-09-16 11:42:47,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:47,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:42:47,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:47,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:42:47,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:42:47,440 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 241 [2022-09-16 11:42:47,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 253 transitions, 902 flow. Second operand has 6 states, 6 states have (on average 214.5) internal successors, (1287), 6 states have internal predecessors, (1287), 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 11:42:47,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:47,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 241 [2022-09-16 11:42:47,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:47,695 INFO L130 PetriNetUnfolder]: 166/1383 cut-off events. [2022-09-16 11:42:47,695 INFO L131 PetriNetUnfolder]: For 562/569 co-relation queries the response was YES. [2022-09-16 11:42:47,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 1383 events. 166/1383 cut-off events. For 562/569 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11201 event pairs, 0 based on Foata normal form. 8/1230 useless extension candidates. Maximal degree in co-relation 2337. Up to 161 conditions per place. [2022-09-16 11:42:47,703 INFO L137 encePairwiseOnDemand]: 236/241 looper letters, 0 selfloop transitions, 0 changer transitions 264/264 dead transitions. [2022-09-16 11:42:47,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 264 transitions, 989 flow [2022-09-16 11:42:47,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:42:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:42:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1509 transitions. [2022-09-16 11:42:47,705 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8944872554831061 [2022-09-16 11:42:47,706 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1509 transitions. [2022-09-16 11:42:47,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1509 transitions. [2022-09-16 11:42:47,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:47,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1509 transitions. [2022-09-16 11:42:47,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 215.57142857142858) internal successors, (1509), 7 states have internal predecessors, (1509), 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 11:42:47,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 11:42:47,710 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 11:42:47,710 INFO L175 Difference]: Start difference. First operand has 277 places, 253 transitions, 902 flow. Second operand 7 states and 1509 transitions. [2022-09-16 11:42:47,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 264 transitions, 989 flow [2022-09-16 11:42:47,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 264 transitions, 977 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:42:47,718 INFO L231 Difference]: Finished difference. Result has 279 places, 0 transitions, 0 flow [2022-09-16 11:42:47,719 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=279, PETRI_TRANSITIONS=0} [2022-09-16 11:42:47,719 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 71 predicate places. [2022-09-16 11:42:47,719 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 0 transitions, 0 flow [2022-09-16 11:42:47,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.5) internal successors, (1287), 6 states have internal predecessors, (1287), 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 11:42:47,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-09-16 11:42:47,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-09-16 11:42:47,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-09-16 11:42:47,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-09-16 11:42:47,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2022-09-16 11:42:47,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2022-09-16 11:42:47,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2022-09-16 11:42:47,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2022-09-16 11:42:47,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-09-16 11:42:47,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-09-16 11:42:47,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 16 remaining) [2022-09-16 11:42:47,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2022-09-16 11:42:47,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-09-16 11:42:47,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-09-16 11:42:47,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-09-16 11:42:47,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-09-16 11:42:47,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-09-16 11:42:47,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:47,940 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:47,944 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:42:47,944 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:42:47,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:42:47 BasicIcfg [2022-09-16 11:42:47,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:42:47,950 INFO L158 Benchmark]: Toolchain (without parser) took 20689.39ms. Allocated memory was 191.9MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 167.4MB in the beginning and 1.0GB in the end (delta: -880.7MB). Peak memory consumption was 395.3MB. Max. memory is 8.0GB. [2022-09-16 11:42:47,950 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 191.9MB. Free memory is still 151.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:42:47,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.01ms. Allocated memory was 191.9MB in the beginning and 281.0MB in the end (delta: 89.1MB). Free memory was 167.0MB in the beginning and 252.5MB in the end (delta: -85.5MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-09-16 11:42:47,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.26ms. Allocated memory is still 281.0MB. Free memory was 252.5MB in the beginning and 250.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:42:47,951 INFO L158 Benchmark]: Boogie Preprocessor took 44.60ms. Allocated memory is still 281.0MB. Free memory was 250.4MB in the beginning and 248.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:42:47,951 INFO L158 Benchmark]: RCFGBuilder took 600.70ms. Allocated memory is still 281.0MB. Free memory was 248.6MB in the beginning and 230.5MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-09-16 11:42:47,952 INFO L158 Benchmark]: TraceAbstraction took 19607.89ms. Allocated memory was 281.0MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 229.7MB in the beginning and 1.0GB in the end (delta: -818.3MB). Peak memory consumption was 368.7MB. Max. memory is 8.0GB. [2022-09-16 11:42:47,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 191.9MB. Free memory is still 151.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 365.01ms. Allocated memory was 191.9MB in the beginning and 281.0MB in the end (delta: 89.1MB). Free memory was 167.0MB in the beginning and 252.5MB in the end (delta: -85.5MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.26ms. Allocated memory is still 281.0MB. Free memory was 252.5MB in the beginning and 250.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.60ms. Allocated memory is still 281.0MB. Free memory was 250.4MB in the beginning and 248.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 600.70ms. Allocated memory is still 281.0MB. Free memory was 248.6MB in the beginning and 230.5MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 19607.89ms. Allocated memory was 281.0MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 229.7MB in the beginning and 1.0GB in the end (delta: -818.3MB). Peak memory consumption was 368.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: 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 5 procedures, 301 locations, 16 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: 19.4s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1661 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1661 mSDsluCounter, 451 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 570 mSDsCounter, 306 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1598 IncrementalHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 306 mSolverCounterUnsat, 165 mSDtfsCounter, 1598 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1634 GetRequests, 1426 SyntacticMatches, 5 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=978occurred in iteration=17, InterpolantAutomatonStates: 169, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 4065 NumberOfCodeBlocks, 4029 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 4512 ConstructedInterpolants, 0 QuantifiedInterpolants, 7014 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1883 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 33 InterpolantComputations, 18 PerfectInterpolantSequences, 1624/1910 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:42:47,986 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...