/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-simpl-str-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:47:15,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:47:15,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:47:15,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:47:15,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:47:15,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:47:15,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:47:15,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:47:15,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:47:15,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:47:15,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:47:15,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:47:15,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:47:15,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:47:15,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:47:15,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:47:15,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:47:15,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:47:15,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:47:15,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:47:15,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:47:15,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:47:15,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:47:15,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:47:15,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:47:15,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:47:15,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:47:15,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:47:15,860 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 11:47:15,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:47:15,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:47:15,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:47:15,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:47:15,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:47:15,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:47:15,901 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:47:15,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:47:15,902 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:47:15,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:47:15,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:47:15,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:47:15,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:47:15,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:47:15,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:47:15,903 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:47:15,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:47:15,903 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:47:15,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:47:15,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:47:15,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:47:15,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:47:15,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:47:15,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:47:15,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:47:15,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:47:15,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:47:15,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:47:15,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:47:15,904 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:47:15,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:47:15,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:47:16,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:47:16,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:47:16,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:47:16,171 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:47:16,173 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:47:16,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c [2022-09-16 11:47:16,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5edd13c88/6b451ccf8dca4535834691f0de93e867/FLAGa62c849af [2022-09-16 11:47:16,641 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:47:16,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c [2022-09-16 11:47:16,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5edd13c88/6b451ccf8dca4535834691f0de93e867/FLAGa62c849af [2022-09-16 11:47:16,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5edd13c88/6b451ccf8dca4535834691f0de93e867 [2022-09-16 11:47:16,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:47:16,662 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:47:16,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:47:16,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:47:16,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:47:16,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:47:16" (1/1) ... [2022-09-16 11:47:16,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8ee19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16, skipping insertion in model container [2022-09-16 11:47:16,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:47:16" (1/1) ... [2022-09-16 11:47:16,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:47:16,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:47:16,856 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-simpl-str-trans.wvr.c[2514,2527] [2022-09-16 11:47:16,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:47:16,864 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:47:16,886 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-simpl-str-trans.wvr.c[2514,2527] [2022-09-16 11:47:16,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:47:16,898 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:47:16,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16 WrapperNode [2022-09-16 11:47:16,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:47:16,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:47:16,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:47:16,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:47:16,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16" (1/1) ... [2022-09-16 11:47:16,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16" (1/1) ... [2022-09-16 11:47:16,931 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 217 [2022-09-16 11:47:16,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:47:16,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:47:16,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:47:16,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:47:16,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16" (1/1) ... [2022-09-16 11:47:16,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16" (1/1) ... [2022-09-16 11:47:16,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16" (1/1) ... [2022-09-16 11:47:16,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16" (1/1) ... [2022-09-16 11:47:16,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16" (1/1) ... [2022-09-16 11:47:16,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16" (1/1) ... [2022-09-16 11:47:16,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16" (1/1) ... [2022-09-16 11:47:16,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:47:16,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:47:16,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:47:16,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:47:16,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16" (1/1) ... [2022-09-16 11:47:16,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:47:17,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:47:17,014 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 11:47:17,022 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 11:47:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:47:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:47:17,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:47:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:47:17,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:47:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:47:17,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:47:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:47:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:47:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:47:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:47:17,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:47:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:47:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:47:17,050 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 11:47:17,130 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:47:17,131 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:47:17,540 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:47:17,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:47:17,551 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 11:47:17,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:47:17 BoogieIcfgContainer [2022-09-16 11:47:17,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:47:17,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:47:17,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:47:17,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:47:17,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:47:16" (1/3) ... [2022-09-16 11:47:17,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3829ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:47:17, skipping insertion in model container [2022-09-16 11:47:17,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:16" (2/3) ... [2022-09-16 11:47:17,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3829ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:47:17, skipping insertion in model container [2022-09-16 11:47:17,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:47:17" (3/3) ... [2022-09-16 11:47:17,567 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2022-09-16 11:47:17,581 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:47:17,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-09-16 11:47:17,582 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:47:17,712 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:47:17,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 292 transitions, 608 flow [2022-09-16 11:47:17,885 INFO L130 PetriNetUnfolder]: 22/289 cut-off events. [2022-09-16 11:47:17,885 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:47:17,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 289 events. 22/289 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 821 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 220. Up to 2 conditions per place. [2022-09-16 11:47:17,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 292 transitions, 608 flow [2022-09-16 11:47:17,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 268 transitions, 551 flow [2022-09-16 11:47:17,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:47:17,918 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;@6d45e830, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:47:17,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-09-16 11:47:17,932 INFO L130 PetriNetUnfolder]: 4/95 cut-off events. [2022-09-16 11:47:17,932 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:47:17,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:17,933 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] [2022-09-16 11:47:17,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:17,937 INFO L85 PathProgramCache]: Analyzing trace with hash 118465793, now seen corresponding path program 1 times [2022-09-16 11:47:17,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:17,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062543088] [2022-09-16 11:47:17,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:17,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:18,201 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 11:47:18,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:18,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062543088] [2022-09-16 11:47:18,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062543088] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:18,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:18,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:18,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490534598] [2022-09-16 11:47:18,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:18,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:18,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:18,260 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 292 [2022-09-16 11:47:18,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 268 transitions, 551 flow. Second operand has 6 states, 6 states have (on average 253.83333333333334) internal successors, (1523), 6 states have internal predecessors, (1523), 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 11:47:18,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:18,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 292 [2022-09-16 11:47:18,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:18,612 INFO L130 PetriNetUnfolder]: 140/1060 cut-off events. [2022-09-16 11:47:18,612 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-09-16 11:47:18,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1384 conditions, 1060 events. 140/1060 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 7413 event pairs, 8 based on Foata normal form. 97/985 useless extension candidates. Maximal degree in co-relation 1234. Up to 165 conditions per place. [2022-09-16 11:47:18,636 INFO L137 encePairwiseOnDemand]: 280/292 looper letters, 33 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-09-16 11:47:18,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 269 transitions, 647 flow [2022-09-16 11:47:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1565 transitions. [2022-09-16 11:47:18,656 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8932648401826484 [2022-09-16 11:47:18,657 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1565 transitions. [2022-09-16 11:47:18,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1565 transitions. [2022-09-16 11:47:18,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:18,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1565 transitions. [2022-09-16 11:47:18,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 260.8333333333333) internal successors, (1565), 6 states have internal predecessors, (1565), 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 11:47:18,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:18,682 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:18,684 INFO L175 Difference]: Start difference. First operand has 257 places, 268 transitions, 551 flow. Second operand 6 states and 1565 transitions. [2022-09-16 11:47:18,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 269 transitions, 647 flow [2022-09-16 11:47:18,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 269 transitions, 628 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:18,697 INFO L231 Difference]: Finished difference. Result has 256 places, 261 transitions, 538 flow [2022-09-16 11:47:18,699 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=538, PETRI_PLACES=256, PETRI_TRANSITIONS=261} [2022-09-16 11:47:18,703 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, -1 predicate places. [2022-09-16 11:47:18,703 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 261 transitions, 538 flow [2022-09-16 11:47:18,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.83333333333334) internal successors, (1523), 6 states have internal predecessors, (1523), 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 11:47:18,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:18,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:18,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:47:18,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:18,706 INFO L85 PathProgramCache]: Analyzing trace with hash -622526980, now seen corresponding path program 1 times [2022-09-16 11:47:18,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:18,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473138480] [2022-09-16 11:47:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:18,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:18,792 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 11:47:18,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:18,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473138480] [2022-09-16 11:47:18,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473138480] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:18,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:18,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631968028] [2022-09-16 11:47:18,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:18,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:18,797 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 292 [2022-09-16 11:47:18,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 261 transitions, 538 flow. Second operand has 4 states, 4 states have (on average 256.75) internal successors, (1027), 4 states have internal predecessors, (1027), 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 11:47:18,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:18,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 292 [2022-09-16 11:47:18,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:19,028 INFO L130 PetriNetUnfolder]: 94/821 cut-off events. [2022-09-16 11:47:19,029 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-09-16 11:47:19,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 821 events. 94/821 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5462 event pairs, 24 based on Foata normal form. 0/697 useless extension candidates. Maximal degree in co-relation 684. Up to 71 conditions per place. [2022-09-16 11:47:19,051 INFO L137 encePairwiseOnDemand]: 286/292 looper letters, 37 selfloop transitions, 4 changer transitions 0/275 dead transitions. [2022-09-16 11:47:19,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 275 transitions, 656 flow [2022-09-16 11:47:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1063 transitions. [2022-09-16 11:47:19,054 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9101027397260274 [2022-09-16 11:47:19,054 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1063 transitions. [2022-09-16 11:47:19,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1063 transitions. [2022-09-16 11:47:19,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:19,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1063 transitions. [2022-09-16 11:47:19,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 265.75) internal successors, (1063), 4 states have internal predecessors, (1063), 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 11:47:19,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:19,061 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:19,061 INFO L175 Difference]: Start difference. First operand has 256 places, 261 transitions, 538 flow. Second operand 4 states and 1063 transitions. [2022-09-16 11:47:19,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 275 transitions, 656 flow [2022-09-16 11:47:19,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 275 transitions, 647 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:19,070 INFO L231 Difference]: Finished difference. Result has 257 places, 262 transitions, 553 flow [2022-09-16 11:47:19,070 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=553, PETRI_PLACES=257, PETRI_TRANSITIONS=262} [2022-09-16 11:47:19,071 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 0 predicate places. [2022-09-16 11:47:19,071 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 262 transitions, 553 flow [2022-09-16 11:47:19,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.75) internal successors, (1027), 4 states have internal predecessors, (1027), 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 11:47:19,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:19,072 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] [2022-09-16 11:47:19,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:47:19,073 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:19,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash 64721650, now seen corresponding path program 1 times [2022-09-16 11:47:19,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:19,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201627407] [2022-09-16 11:47:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:19,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:19,155 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 11:47:19,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:19,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201627407] [2022-09-16 11:47:19,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201627407] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:19,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:19,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:19,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038953495] [2022-09-16 11:47:19,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:19,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:19,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:19,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:19,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:19,160 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 292 [2022-09-16 11:47:19,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 262 transitions, 553 flow. Second operand has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 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 11:47:19,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:19,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 292 [2022-09-16 11:47:19,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:19,507 INFO L130 PetriNetUnfolder]: 254/1666 cut-off events. [2022-09-16 11:47:19,507 INFO L131 PetriNetUnfolder]: For 123/262 co-relation queries the response was YES. [2022-09-16 11:47:19,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2115 conditions, 1666 events. 254/1666 cut-off events. For 123/262 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 13372 event pairs, 20 based on Foata normal form. 0/1354 useless extension candidates. Maximal degree in co-relation 1574. Up to 327 conditions per place. [2022-09-16 11:47:19,534 INFO L137 encePairwiseOnDemand]: 286/292 looper letters, 32 selfloop transitions, 5 changer transitions 0/268 dead transitions. [2022-09-16 11:47:19,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 268 transitions, 646 flow [2022-09-16 11:47:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:19,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1550 transitions. [2022-09-16 11:47:19,538 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.884703196347032 [2022-09-16 11:47:19,538 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1550 transitions. [2022-09-16 11:47:19,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1550 transitions. [2022-09-16 11:47:19,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:19,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1550 transitions. [2022-09-16 11:47:19,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 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 11:47:19,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:19,547 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:19,547 INFO L175 Difference]: Start difference. First operand has 257 places, 262 transitions, 553 flow. Second operand 6 states and 1550 transitions. [2022-09-16 11:47:19,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 268 transitions, 646 flow [2022-09-16 11:47:19,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 268 transitions, 646 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:47:19,552 INFO L231 Difference]: Finished difference. Result has 261 places, 261 transitions, 561 flow [2022-09-16 11:47:19,553 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=261, PETRI_TRANSITIONS=261} [2022-09-16 11:47:19,553 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 4 predicate places. [2022-09-16 11:47:19,554 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 261 transitions, 561 flow [2022-09-16 11:47:19,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 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 11:47:19,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:19,555 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] [2022-09-16 11:47:19,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:47:19,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:19,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:19,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2006371950, now seen corresponding path program 1 times [2022-09-16 11:47:19,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:19,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094730995] [2022-09-16 11:47:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:19,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:19,605 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 11:47:19,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:19,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094730995] [2022-09-16 11:47:19,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094730995] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:19,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:19,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:19,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476635854] [2022-09-16 11:47:19,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:19,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:19,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:19,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:19,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:19,609 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 292 [2022-09-16 11:47:19,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 261 transitions, 561 flow. Second operand has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 11:47:19,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:19,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 292 [2022-09-16 11:47:19,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:19,836 INFO L130 PetriNetUnfolder]: 133/838 cut-off events. [2022-09-16 11:47:19,836 INFO L131 PetriNetUnfolder]: For 104/164 co-relation queries the response was YES. [2022-09-16 11:47:19,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 838 events. 133/838 cut-off events. For 104/164 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5983 event pairs, 48 based on Foata normal form. 0/691 useless extension candidates. Maximal degree in co-relation 953. Up to 126 conditions per place. [2022-09-16 11:47:19,857 INFO L137 encePairwiseOnDemand]: 286/292 looper letters, 36 selfloop transitions, 4 changer transitions 0/274 dead transitions. [2022-09-16 11:47:19,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 274 transitions, 674 flow [2022-09-16 11:47:19,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1062 transitions. [2022-09-16 11:47:19,860 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9092465753424658 [2022-09-16 11:47:19,860 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1062 transitions. [2022-09-16 11:47:19,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1062 transitions. [2022-09-16 11:47:19,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:19,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1062 transitions. [2022-09-16 11:47:19,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 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 11:47:19,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:19,866 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:19,867 INFO L175 Difference]: Start difference. First operand has 261 places, 261 transitions, 561 flow. Second operand 4 states and 1062 transitions. [2022-09-16 11:47:19,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 274 transitions, 674 flow [2022-09-16 11:47:19,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 274 transitions, 665 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:19,872 INFO L231 Difference]: Finished difference. Result has 262 places, 262 transitions, 576 flow [2022-09-16 11:47:19,873 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=576, PETRI_PLACES=262, PETRI_TRANSITIONS=262} [2022-09-16 11:47:19,873 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 5 predicate places. [2022-09-16 11:47:19,874 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 262 transitions, 576 flow [2022-09-16 11:47:19,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 11:47:19,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:19,874 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] [2022-09-16 11:47:19,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:47:19,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:19,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:19,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1460776477, now seen corresponding path program 1 times [2022-09-16 11:47:19,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:19,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763615990] [2022-09-16 11:47:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:19,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:19,917 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 11:47:19,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:19,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763615990] [2022-09-16 11:47:19,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763615990] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:19,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:19,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:19,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922585415] [2022-09-16 11:47:19,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:19,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:19,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:19,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:19,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:19,921 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 292 [2022-09-16 11:47:19,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 262 transitions, 576 flow. Second operand has 4 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 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 11:47:19,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:19,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 292 [2022-09-16 11:47:19,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:20,098 INFO L130 PetriNetUnfolder]: 88/965 cut-off events. [2022-09-16 11:47:20,099 INFO L131 PetriNetUnfolder]: For 55/59 co-relation queries the response was YES. [2022-09-16 11:47:20,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 965 events. 88/965 cut-off events. For 55/59 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6787 event pairs, 24 based on Foata normal form. 3/843 useless extension candidates. Maximal degree in co-relation 1106. Up to 72 conditions per place. [2022-09-16 11:47:20,123 INFO L137 encePairwiseOnDemand]: 288/292 looper letters, 37 selfloop transitions, 3 changer transitions 0/274 dead transitions. [2022-09-16 11:47:20,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 274 transitions, 684 flow [2022-09-16 11:47:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:20,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1061 transitions. [2022-09-16 11:47:20,126 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9083904109589042 [2022-09-16 11:47:20,126 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1061 transitions. [2022-09-16 11:47:20,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1061 transitions. [2022-09-16 11:47:20,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:20,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1061 transitions. [2022-09-16 11:47:20,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 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 11:47:20,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:20,132 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:20,132 INFO L175 Difference]: Start difference. First operand has 262 places, 262 transitions, 576 flow. Second operand 4 states and 1061 transitions. [2022-09-16 11:47:20,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 274 transitions, 684 flow [2022-09-16 11:47:20,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 274 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:20,137 INFO L231 Difference]: Finished difference. Result has 264 places, 261 transitions, 574 flow [2022-09-16 11:47:20,138 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=574, PETRI_PLACES=264, PETRI_TRANSITIONS=261} [2022-09-16 11:47:20,138 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 7 predicate places. [2022-09-16 11:47:20,139 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 261 transitions, 574 flow [2022-09-16 11:47:20,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 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 11:47:20,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:20,140 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] [2022-09-16 11:47:20,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:47:20,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1960570219, now seen corresponding path program 1 times [2022-09-16 11:47:20,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:20,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153417156] [2022-09-16 11:47:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:20,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:20,195 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 11:47:20,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:20,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153417156] [2022-09-16 11:47:20,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153417156] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:20,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:20,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:20,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124408390] [2022-09-16 11:47:20,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:20,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:20,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:20,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:20,199 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 292 [2022-09-16 11:47:20,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 261 transitions, 574 flow. Second operand has 6 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 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 11:47:20,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:20,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 292 [2022-09-16 11:47:20,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:20,465 INFO L130 PetriNetUnfolder]: 156/1550 cut-off events. [2022-09-16 11:47:20,466 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-09-16 11:47:20,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2072 conditions, 1550 events. 156/1550 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12642 event pairs, 8 based on Foata normal form. 0/1364 useless extension candidates. Maximal degree in co-relation 1681. Up to 217 conditions per place. [2022-09-16 11:47:20,501 INFO L137 encePairwiseOnDemand]: 286/292 looper letters, 31 selfloop transitions, 5 changer transitions 0/268 dead transitions. [2022-09-16 11:47:20,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 268 transitions, 668 flow [2022-09-16 11:47:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1549 transitions. [2022-09-16 11:47:20,505 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8841324200913242 [2022-09-16 11:47:20,505 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1549 transitions. [2022-09-16 11:47:20,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1549 transitions. [2022-09-16 11:47:20,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:20,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1549 transitions. [2022-09-16 11:47:20,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.1666666666667) internal successors, (1549), 6 states have internal predecessors, (1549), 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 11:47:20,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:20,512 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:20,512 INFO L175 Difference]: Start difference. First operand has 264 places, 261 transitions, 574 flow. Second operand 6 states and 1549 transitions. [2022-09-16 11:47:20,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 268 transitions, 668 flow [2022-09-16 11:47:20,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 268 transitions, 663 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:20,520 INFO L231 Difference]: Finished difference. Result has 266 places, 260 transitions, 577 flow [2022-09-16 11:47:20,521 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=577, PETRI_PLACES=266, PETRI_TRANSITIONS=260} [2022-09-16 11:47:20,523 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 9 predicate places. [2022-09-16 11:47:20,523 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 260 transitions, 577 flow [2022-09-16 11:47:20,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 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 11:47:20,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:20,524 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] [2022-09-16 11:47:20,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:47:20,524 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:20,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:20,525 INFO L85 PathProgramCache]: Analyzing trace with hash -507310194, now seen corresponding path program 1 times [2022-09-16 11:47:20,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:20,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268443532] [2022-09-16 11:47:20,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:20,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:20,615 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 11:47:20,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:20,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268443532] [2022-09-16 11:47:20,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268443532] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:20,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:20,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:20,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462536439] [2022-09-16 11:47:20,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:20,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:47:20,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:20,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:47:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:47:20,621 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 292 [2022-09-16 11:47:20,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 260 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 253.6) internal successors, (1268), 5 states have internal predecessors, (1268), 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 11:47:20,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:20,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 292 [2022-09-16 11:47:20,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:20,837 INFO L130 PetriNetUnfolder]: 102/994 cut-off events. [2022-09-16 11:47:20,837 INFO L131 PetriNetUnfolder]: For 38/42 co-relation queries the response was YES. [2022-09-16 11:47:20,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 994 events. 102/994 cut-off events. For 38/42 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7161 event pairs, 30 based on Foata normal form. 0/872 useless extension candidates. Maximal degree in co-relation 1195. Up to 90 conditions per place. [2022-09-16 11:47:20,860 INFO L137 encePairwiseOnDemand]: 285/292 looper letters, 44 selfloop transitions, 7 changer transitions 0/281 dead transitions. [2022-09-16 11:47:20,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 281 transitions, 733 flow [2022-09-16 11:47:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1558 transitions. [2022-09-16 11:47:20,864 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.889269406392694 [2022-09-16 11:47:20,864 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1558 transitions. [2022-09-16 11:47:20,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1558 transitions. [2022-09-16 11:47:20,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:20,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1558 transitions. [2022-09-16 11:47:20,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.6666666666667) internal successors, (1558), 6 states have internal predecessors, (1558), 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 11:47:20,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:20,873 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:20,873 INFO L175 Difference]: Start difference. First operand has 266 places, 260 transitions, 577 flow. Second operand 6 states and 1558 transitions. [2022-09-16 11:47:20,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 281 transitions, 733 flow [2022-09-16 11:47:20,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 281 transitions, 719 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:47:20,879 INFO L231 Difference]: Finished difference. Result has 267 places, 263 transitions, 598 flow [2022-09-16 11:47:20,879 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=598, PETRI_PLACES=267, PETRI_TRANSITIONS=263} [2022-09-16 11:47:20,880 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 10 predicate places. [2022-09-16 11:47:20,880 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 263 transitions, 598 flow [2022-09-16 11:47:20,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 253.6) internal successors, (1268), 5 states have internal predecessors, (1268), 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 11:47:20,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:20,881 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] [2022-09-16 11:47:20,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:47:20,881 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:20,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash -995407829, now seen corresponding path program 1 times [2022-09-16 11:47:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:20,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197983985] [2022-09-16 11:47:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:20,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:20,961 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 11:47:20,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:20,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197983985] [2022-09-16 11:47:20,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197983985] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:20,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:20,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:20,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140495321] [2022-09-16 11:47:20,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:20,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:20,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:20,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:20,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:20,965 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 292 [2022-09-16 11:47:20,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 263 transitions, 598 flow. Second operand has 6 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 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 11:47:20,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:20,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 292 [2022-09-16 11:47:20,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:21,331 INFO L130 PetriNetUnfolder]: 378/1920 cut-off events. [2022-09-16 11:47:21,332 INFO L131 PetriNetUnfolder]: For 292/298 co-relation queries the response was YES. [2022-09-16 11:47:21,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2693 conditions, 1920 events. 378/1920 cut-off events. For 292/298 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 16057 event pairs, 4 based on Foata normal form. 0/1537 useless extension candidates. Maximal degree in co-relation 2508. Up to 574 conditions per place. [2022-09-16 11:47:21,370 INFO L137 encePairwiseOnDemand]: 286/292 looper letters, 31 selfloop transitions, 5 changer transitions 0/268 dead transitions. [2022-09-16 11:47:21,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 268 transitions, 684 flow [2022-09-16 11:47:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1549 transitions. [2022-09-16 11:47:21,374 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8841324200913242 [2022-09-16 11:47:21,374 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1549 transitions. [2022-09-16 11:47:21,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1549 transitions. [2022-09-16 11:47:21,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:21,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1549 transitions. [2022-09-16 11:47:21,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.1666666666667) internal successors, (1549), 6 states have internal predecessors, (1549), 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 11:47:21,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:21,382 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:21,382 INFO L175 Difference]: Start difference. First operand has 267 places, 263 transitions, 598 flow. Second operand 6 states and 1549 transitions. [2022-09-16 11:47:21,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 268 transitions, 684 flow [2022-09-16 11:47:21,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 268 transitions, 681 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:21,388 INFO L231 Difference]: Finished difference. Result has 270 places, 262 transitions, 603 flow [2022-09-16 11:47:21,388 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=603, PETRI_PLACES=270, PETRI_TRANSITIONS=262} [2022-09-16 11:47:21,389 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 13 predicate places. [2022-09-16 11:47:21,389 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 262 transitions, 603 flow [2022-09-16 11:47:21,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 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 11:47:21,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:21,390 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] [2022-09-16 11:47:21,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:47:21,390 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:21,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:21,391 INFO L85 PathProgramCache]: Analyzing trace with hash -792870760, now seen corresponding path program 1 times [2022-09-16 11:47:21,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:21,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932328498] [2022-09-16 11:47:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:21,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:21,429 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 11:47:21,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:21,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932328498] [2022-09-16 11:47:21,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932328498] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:21,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:21,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:21,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133660805] [2022-09-16 11:47:21,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:21,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:21,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:21,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:21,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:21,433 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 292 [2022-09-16 11:47:21,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 262 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 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 11:47:21,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:21,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 292 [2022-09-16 11:47:21,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:21,740 INFO L130 PetriNetUnfolder]: 371/1817 cut-off events. [2022-09-16 11:47:21,740 INFO L131 PetriNetUnfolder]: For 369/623 co-relation queries the response was YES. [2022-09-16 11:47:21,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 1817 events. 371/1817 cut-off events. For 369/623 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17470 event pairs, 144 based on Foata normal form. 0/1398 useless extension candidates. Maximal degree in co-relation 2545. Up to 338 conditions per place. [2022-09-16 11:47:21,766 INFO L137 encePairwiseOnDemand]: 286/292 looper letters, 35 selfloop transitions, 4 changer transitions 0/274 dead transitions. [2022-09-16 11:47:21,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 274 transitions, 709 flow [2022-09-16 11:47:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1061 transitions. [2022-09-16 11:47:21,769 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9083904109589042 [2022-09-16 11:47:21,769 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1061 transitions. [2022-09-16 11:47:21,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1061 transitions. [2022-09-16 11:47:21,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:21,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1061 transitions. [2022-09-16 11:47:21,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 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 11:47:21,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:21,776 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:21,776 INFO L175 Difference]: Start difference. First operand has 270 places, 262 transitions, 603 flow. Second operand 4 states and 1061 transitions. [2022-09-16 11:47:21,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 274 transitions, 709 flow [2022-09-16 11:47:21,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 274 transitions, 700 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:21,781 INFO L231 Difference]: Finished difference. Result has 271 places, 263 transitions, 618 flow [2022-09-16 11:47:21,782 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=618, PETRI_PLACES=271, PETRI_TRANSITIONS=263} [2022-09-16 11:47:21,782 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 14 predicate places. [2022-09-16 11:47:21,782 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 263 transitions, 618 flow [2022-09-16 11:47:21,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 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 11:47:21,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:21,784 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] [2022-09-16 11:47:21,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:47:21,784 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:21,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash 597565909, now seen corresponding path program 1 times [2022-09-16 11:47:21,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:21,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397049873] [2022-09-16 11:47:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:21,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:21,815 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 11:47:21,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:21,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397049873] [2022-09-16 11:47:21,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397049873] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:21,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:21,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:21,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696526342] [2022-09-16 11:47:21,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:21,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:21,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:21,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:21,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:21,818 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 292 [2022-09-16 11:47:21,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 263 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 257.5) internal successors, (1030), 4 states have internal predecessors, (1030), 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 11:47:21,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:21,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 292 [2022-09-16 11:47:21,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:22,039 INFO L130 PetriNetUnfolder]: 126/880 cut-off events. [2022-09-16 11:47:22,040 INFO L131 PetriNetUnfolder]: For 154/214 co-relation queries the response was YES. [2022-09-16 11:47:22,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 880 events. 126/880 cut-off events. For 154/214 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6426 event pairs, 48 based on Foata normal form. 5/749 useless extension candidates. Maximal degree in co-relation 1243. Up to 121 conditions per place. [2022-09-16 11:47:22,069 INFO L137 encePairwiseOnDemand]: 288/292 looper letters, 36 selfloop transitions, 3 changer transitions 0/274 dead transitions. [2022-09-16 11:47:22,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 274 transitions, 721 flow [2022-09-16 11:47:22,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1060 transitions. [2022-09-16 11:47:22,072 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9075342465753424 [2022-09-16 11:47:22,072 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1060 transitions. [2022-09-16 11:47:22,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1060 transitions. [2022-09-16 11:47:22,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:22,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1060 transitions. [2022-09-16 11:47:22,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 11:47:22,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:22,077 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:22,077 INFO L175 Difference]: Start difference. First operand has 271 places, 263 transitions, 618 flow. Second operand 4 states and 1060 transitions. [2022-09-16 11:47:22,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 274 transitions, 721 flow [2022-09-16 11:47:22,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 274 transitions, 719 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:22,083 INFO L231 Difference]: Finished difference. Result has 273 places, 262 transitions, 616 flow [2022-09-16 11:47:22,083 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=616, PETRI_PLACES=273, PETRI_TRANSITIONS=262} [2022-09-16 11:47:22,084 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 16 predicate places. [2022-09-16 11:47:22,084 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 262 transitions, 616 flow [2022-09-16 11:47:22,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.5) internal successors, (1030), 4 states have internal predecessors, (1030), 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 11:47:22,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:22,085 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] [2022-09-16 11:47:22,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:47:22,085 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:22,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:22,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1002767504, now seen corresponding path program 1 times [2022-09-16 11:47:22,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:22,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553274928] [2022-09-16 11:47:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:22,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:22,145 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 11:47:22,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:22,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553274928] [2022-09-16 11:47:22,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553274928] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:22,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:22,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:22,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072768162] [2022-09-16 11:47:22,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:22,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:22,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:22,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:22,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:22,149 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 292 [2022-09-16 11:47:22,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 262 transitions, 616 flow. Second operand has 8 states, 8 states have (on average 249.0) internal successors, (1992), 8 states have internal predecessors, (1992), 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 11:47:22,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:22,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 292 [2022-09-16 11:47:22,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:22,508 INFO L130 PetriNetUnfolder]: 140/1629 cut-off events. [2022-09-16 11:47:22,509 INFO L131 PetriNetUnfolder]: For 103/109 co-relation queries the response was YES. [2022-09-16 11:47:22,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2212 conditions, 1629 events. 140/1629 cut-off events. For 103/109 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 12519 event pairs, 7 based on Foata normal form. 0/1451 useless extension candidates. Maximal degree in co-relation 1919. Up to 126 conditions per place. [2022-09-16 11:47:22,540 INFO L137 encePairwiseOnDemand]: 282/292 looper letters, 41 selfloop transitions, 11 changer transitions 0/278 dead transitions. [2022-09-16 11:47:22,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 278 transitions, 766 flow [2022-09-16 11:47:22,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:22,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2026 transitions. [2022-09-16 11:47:22,546 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8672945205479452 [2022-09-16 11:47:22,546 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2026 transitions. [2022-09-16 11:47:22,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2026 transitions. [2022-09-16 11:47:22,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:22,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2026 transitions. [2022-09-16 11:47:22,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 253.25) internal successors, (2026), 8 states have internal predecessors, (2026), 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 11:47:22,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 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 11:47:22,554 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 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 11:47:22,554 INFO L175 Difference]: Start difference. First operand has 273 places, 262 transitions, 616 flow. Second operand 8 states and 2026 transitions. [2022-09-16 11:47:22,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 278 transitions, 766 flow [2022-09-16 11:47:22,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 278 transitions, 761 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:22,561 INFO L231 Difference]: Finished difference. Result has 280 places, 263 transitions, 647 flow [2022-09-16 11:47:22,562 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=647, PETRI_PLACES=280, PETRI_TRANSITIONS=263} [2022-09-16 11:47:22,562 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 23 predicate places. [2022-09-16 11:47:22,562 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 263 transitions, 647 flow [2022-09-16 11:47:22,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.0) internal successors, (1992), 8 states have internal predecessors, (1992), 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 11:47:22,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:22,563 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] [2022-09-16 11:47:22,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:47:22,563 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:22,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:22,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1344674812, now seen corresponding path program 1 times [2022-09-16 11:47:22,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:22,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998190387] [2022-09-16 11:47:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:22,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:22,636 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 11:47:22,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:22,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998190387] [2022-09-16 11:47:22,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998190387] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:22,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:22,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:22,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323313454] [2022-09-16 11:47:22,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:22,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:22,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:22,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:22,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:22,639 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 292 [2022-09-16 11:47:22,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 263 transitions, 647 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 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 11:47:22,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:22,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 292 [2022-09-16 11:47:22,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:23,025 INFO L130 PetriNetUnfolder]: 284/1925 cut-off events. [2022-09-16 11:47:23,026 INFO L131 PetriNetUnfolder]: For 218/266 co-relation queries the response was YES. [2022-09-16 11:47:23,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1925 events. 284/1925 cut-off events. For 218/266 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16387 event pairs, 6 based on Foata normal form. 0/1656 useless extension candidates. Maximal degree in co-relation 2399. Up to 427 conditions per place. [2022-09-16 11:47:23,060 INFO L137 encePairwiseOnDemand]: 286/292 looper letters, 30 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-09-16 11:47:23,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 269 transitions, 736 flow [2022-09-16 11:47:23,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1548 transitions. [2022-09-16 11:47:23,064 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8835616438356164 [2022-09-16 11:47:23,065 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1548 transitions. [2022-09-16 11:47:23,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1548 transitions. [2022-09-16 11:47:23,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:23,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1548 transitions. [2022-09-16 11:47:23,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 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 11:47:23,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:23,071 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:23,071 INFO L175 Difference]: Start difference. First operand has 280 places, 263 transitions, 647 flow. Second operand 6 states and 1548 transitions. [2022-09-16 11:47:23,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 269 transitions, 736 flow [2022-09-16 11:47:23,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 269 transitions, 727 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:23,076 INFO L231 Difference]: Finished difference. Result has 280 places, 262 transitions, 646 flow [2022-09-16 11:47:23,077 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=646, PETRI_PLACES=280, PETRI_TRANSITIONS=262} [2022-09-16 11:47:23,079 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 23 predicate places. [2022-09-16 11:47:23,079 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 262 transitions, 646 flow [2022-09-16 11:47:23,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 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 11:47:23,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:23,080 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] [2022-09-16 11:47:23,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:47:23,080 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1021020790, now seen corresponding path program 1 times [2022-09-16 11:47:23,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:23,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922405294] [2022-09-16 11:47:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:23,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:23,162 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 11:47:23,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:23,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922405294] [2022-09-16 11:47:23,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922405294] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:23,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:23,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:23,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297050443] [2022-09-16 11:47:23,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:23,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:23,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:23,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:23,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:23,166 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 292 [2022-09-16 11:47:23,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 262 transitions, 646 flow. Second operand has 8 states, 8 states have (on average 249.125) internal successors, (1993), 8 states have internal predecessors, (1993), 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 11:47:23,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:23,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 292 [2022-09-16 11:47:23,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:23,464 INFO L130 PetriNetUnfolder]: 114/1171 cut-off events. [2022-09-16 11:47:23,464 INFO L131 PetriNetUnfolder]: For 120/287 co-relation queries the response was YES. [2022-09-16 11:47:23,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 1171 events. 114/1171 cut-off events. For 120/287 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7747 event pairs, 4 based on Foata normal form. 8/1071 useless extension candidates. Maximal degree in co-relation 1532. Up to 119 conditions per place. [2022-09-16 11:47:23,485 INFO L137 encePairwiseOnDemand]: 282/292 looper letters, 43 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2022-09-16 11:47:23,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 279 transitions, 800 flow [2022-09-16 11:47:23,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2028 transitions. [2022-09-16 11:47:23,490 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8681506849315068 [2022-09-16 11:47:23,490 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2028 transitions. [2022-09-16 11:47:23,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2028 transitions. [2022-09-16 11:47:23,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:23,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2028 transitions. [2022-09-16 11:47:23,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 253.5) internal successors, (2028), 8 states have internal predecessors, (2028), 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 11:47:23,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 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 11:47:23,498 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 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 11:47:23,498 INFO L175 Difference]: Start difference. First operand has 280 places, 262 transitions, 646 flow. Second operand 8 states and 2028 transitions. [2022-09-16 11:47:23,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 279 transitions, 800 flow [2022-09-16 11:47:23,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 279 transitions, 791 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:23,504 INFO L231 Difference]: Finished difference. Result has 285 places, 263 transitions, 667 flow [2022-09-16 11:47:23,505 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=667, PETRI_PLACES=285, PETRI_TRANSITIONS=263} [2022-09-16 11:47:23,506 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 28 predicate places. [2022-09-16 11:47:23,506 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 263 transitions, 667 flow [2022-09-16 11:47:23,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.125) internal successors, (1993), 8 states have internal predecessors, (1993), 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 11:47:23,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:23,507 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] [2022-09-16 11:47:23,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:47:23,507 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:23,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:23,507 INFO L85 PathProgramCache]: Analyzing trace with hash 322692671, now seen corresponding path program 1 times [2022-09-16 11:47:23,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:23,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303177732] [2022-09-16 11:47:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:23,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:23,548 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 11:47:23,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:23,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303177732] [2022-09-16 11:47:23,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303177732] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:23,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:23,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:23,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278013933] [2022-09-16 11:47:23,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:23,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:47:23,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:23,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:47:23,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:47:23,551 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 292 [2022-09-16 11:47:23,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 263 transitions, 667 flow. Second operand has 5 states, 5 states have (on average 253.8) internal successors, (1269), 5 states have internal predecessors, (1269), 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 11:47:23,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:23,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 292 [2022-09-16 11:47:23,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:23,792 INFO L130 PetriNetUnfolder]: 154/932 cut-off events. [2022-09-16 11:47:23,792 INFO L131 PetriNetUnfolder]: For 162/236 co-relation queries the response was YES. [2022-09-16 11:47:23,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 932 events. 154/932 cut-off events. For 162/236 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7281 event pairs, 60 based on Foata normal form. 0/795 useless extension candidates. Maximal degree in co-relation 1398. Up to 153 conditions per place. [2022-09-16 11:47:23,828 INFO L137 encePairwiseOnDemand]: 285/292 looper letters, 43 selfloop transitions, 7 changer transitions 0/283 dead transitions. [2022-09-16 11:47:23,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 283 transitions, 818 flow [2022-09-16 11:47:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1557 transitions. [2022-09-16 11:47:23,832 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8886986301369864 [2022-09-16 11:47:23,832 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1557 transitions. [2022-09-16 11:47:23,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1557 transitions. [2022-09-16 11:47:23,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:23,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1557 transitions. [2022-09-16 11:47:23,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 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 11:47:23,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:23,838 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:23,838 INFO L175 Difference]: Start difference. First operand has 285 places, 263 transitions, 667 flow. Second operand 6 states and 1557 transitions. [2022-09-16 11:47:23,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 283 transitions, 818 flow [2022-09-16 11:47:23,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 283 transitions, 804 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:47:23,844 INFO L231 Difference]: Finished difference. Result has 286 places, 266 transitions, 688 flow [2022-09-16 11:47:23,845 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=688, PETRI_PLACES=286, PETRI_TRANSITIONS=266} [2022-09-16 11:47:23,845 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 29 predicate places. [2022-09-16 11:47:23,845 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 266 transitions, 688 flow [2022-09-16 11:47:23,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 253.8) internal successors, (1269), 5 states have internal predecessors, (1269), 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 11:47:23,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:23,846 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] [2022-09-16 11:47:23,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:47:23,846 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:23,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2119503438, now seen corresponding path program 1 times [2022-09-16 11:47:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:23,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603534987] [2022-09-16 11:47:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:23,908 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 11:47:23,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:23,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603534987] [2022-09-16 11:47:23,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603534987] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:23,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:23,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:23,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164930789] [2022-09-16 11:47:23,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:23,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:23,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:23,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:23,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:23,911 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 292 [2022-09-16 11:47:23,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 266 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 248.33333333333334) internal successors, (1490), 6 states have internal predecessors, (1490), 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 11:47:23,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:23,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 292 [2022-09-16 11:47:23,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:24,173 INFO L130 PetriNetUnfolder]: 119/933 cut-off events. [2022-09-16 11:47:24,174 INFO L131 PetriNetUnfolder]: For 132/136 co-relation queries the response was YES. [2022-09-16 11:47:24,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 933 events. 119/933 cut-off events. For 132/136 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6657 event pairs, 58 based on Foata normal form. 3/858 useless extension candidates. Maximal degree in co-relation 1450. Up to 153 conditions per place. [2022-09-16 11:47:24,201 INFO L137 encePairwiseOnDemand]: 284/292 looper letters, 49 selfloop transitions, 7 changer transitions 0/282 dead transitions. [2022-09-16 11:47:24,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 282 transitions, 847 flow [2022-09-16 11:47:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1768 transitions. [2022-09-16 11:47:24,205 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8649706457925636 [2022-09-16 11:47:24,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1768 transitions. [2022-09-16 11:47:24,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1768 transitions. [2022-09-16 11:47:24,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:24,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1768 transitions. [2022-09-16 11:47:24,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 252.57142857142858) internal successors, (1768), 7 states have internal predecessors, (1768), 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 11:47:24,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 11:47:24,213 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 11:47:24,213 INFO L175 Difference]: Start difference. First operand has 286 places, 266 transitions, 688 flow. Second operand 7 states and 1768 transitions. [2022-09-16 11:47:24,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 282 transitions, 847 flow [2022-09-16 11:47:24,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 282 transitions, 841 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:24,219 INFO L231 Difference]: Finished difference. Result has 293 places, 269 transitions, 718 flow [2022-09-16 11:47:24,220 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=718, PETRI_PLACES=293, PETRI_TRANSITIONS=269} [2022-09-16 11:47:24,220 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 36 predicate places. [2022-09-16 11:47:24,220 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 269 transitions, 718 flow [2022-09-16 11:47:24,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.33333333333334) internal successors, (1490), 6 states have internal predecessors, (1490), 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 11:47:24,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:24,221 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] [2022-09-16 11:47:24,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:47:24,221 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:24,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:24,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2007128117, now seen corresponding path program 1 times [2022-09-16 11:47:24,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:24,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160082814] [2022-09-16 11:47:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:24,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:24,285 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 11:47:24,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:24,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160082814] [2022-09-16 11:47:24,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160082814] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:24,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:24,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:24,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855964879] [2022-09-16 11:47:24,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:24,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:24,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:24,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:24,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:24,290 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 292 [2022-09-16 11:47:24,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 269 transitions, 718 flow. Second operand has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 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 11:47:24,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:24,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 292 [2022-09-16 11:47:24,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:24,590 INFO L130 PetriNetUnfolder]: 113/924 cut-off events. [2022-09-16 11:47:24,590 INFO L131 PetriNetUnfolder]: For 146/150 co-relation queries the response was YES. [2022-09-16 11:47:24,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 924 events. 113/924 cut-off events. For 146/150 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6500 event pairs, 46 based on Foata normal form. 3/863 useless extension candidates. Maximal degree in co-relation 1493. Up to 126 conditions per place. [2022-09-16 11:47:24,611 INFO L137 encePairwiseOnDemand]: 284/292 looper letters, 55 selfloop transitions, 8 changer transitions 0/291 dead transitions. [2022-09-16 11:47:24,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 291 transitions, 920 flow [2022-09-16 11:47:24,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:24,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:24,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1774 transitions. [2022-09-16 11:47:24,615 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8679060665362035 [2022-09-16 11:47:24,615 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1774 transitions. [2022-09-16 11:47:24,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1774 transitions. [2022-09-16 11:47:24,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:24,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1774 transitions. [2022-09-16 11:47:24,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 253.42857142857142) internal successors, (1774), 7 states have internal predecessors, (1774), 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 11:47:24,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 11:47:24,622 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 11:47:24,622 INFO L175 Difference]: Start difference. First operand has 293 places, 269 transitions, 718 flow. Second operand 7 states and 1774 transitions. [2022-09-16 11:47:24,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 291 transitions, 920 flow [2022-09-16 11:47:24,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 291 transitions, 918 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:24,629 INFO L231 Difference]: Finished difference. Result has 301 places, 273 transitions, 765 flow [2022-09-16 11:47:24,629 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=765, PETRI_PLACES=301, PETRI_TRANSITIONS=273} [2022-09-16 11:47:24,630 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 44 predicate places. [2022-09-16 11:47:24,630 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 273 transitions, 765 flow [2022-09-16 11:47:24,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 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 11:47:24,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:24,630 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] [2022-09-16 11:47:24,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:47:24,631 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:24,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:24,631 INFO L85 PathProgramCache]: Analyzing trace with hash 2034359167, now seen corresponding path program 1 times [2022-09-16 11:47:24,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:24,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941301719] [2022-09-16 11:47:24,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:24,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:24,659 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 11:47:24,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:24,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941301719] [2022-09-16 11:47:24,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941301719] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:24,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:24,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:24,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325306701] [2022-09-16 11:47:24,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:24,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:24,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:24,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:24,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:24,661 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 292 [2022-09-16 11:47:24,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 273 transitions, 765 flow. Second operand has 4 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 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 11:47:24,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:24,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 292 [2022-09-16 11:47:24,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:24,978 INFO L130 PetriNetUnfolder]: 357/1805 cut-off events. [2022-09-16 11:47:24,979 INFO L131 PetriNetUnfolder]: For 526/778 co-relation queries the response was YES. [2022-09-16 11:47:25,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2802 conditions, 1805 events. 357/1805 cut-off events. For 526/778 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 17460 event pairs, 144 based on Foata normal form. 13/1436 useless extension candidates. Maximal degree in co-relation 2714. Up to 316 conditions per place. [2022-09-16 11:47:25,040 INFO L137 encePairwiseOnDemand]: 288/292 looper letters, 35 selfloop transitions, 3 changer transitions 0/283 dead transitions. [2022-09-16 11:47:25,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 283 transitions, 861 flow [2022-09-16 11:47:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1059 transitions. [2022-09-16 11:47:25,044 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9066780821917808 [2022-09-16 11:47:25,044 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1059 transitions. [2022-09-16 11:47:25,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1059 transitions. [2022-09-16 11:47:25,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:25,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1059 transitions. [2022-09-16 11:47:25,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 264.75) internal successors, (1059), 4 states have internal predecessors, (1059), 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 11:47:25,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:25,049 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:25,049 INFO L175 Difference]: Start difference. First operand has 301 places, 273 transitions, 765 flow. Second operand 4 states and 1059 transitions. [2022-09-16 11:47:25,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 283 transitions, 861 flow [2022-09-16 11:47:25,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 283 transitions, 859 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:25,055 INFO L231 Difference]: Finished difference. Result has 303 places, 272 transitions, 763 flow [2022-09-16 11:47:25,055 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=763, PETRI_PLACES=303, PETRI_TRANSITIONS=272} [2022-09-16 11:47:25,056 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 46 predicate places. [2022-09-16 11:47:25,056 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 272 transitions, 763 flow [2022-09-16 11:47:25,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 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 11:47:25,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:25,056 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] [2022-09-16 11:47:25,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:47:25,056 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:25,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:25,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1359374379, now seen corresponding path program 1 times [2022-09-16 11:47:25,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:25,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962885012] [2022-09-16 11:47:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:25,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:25,110 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 11:47:25,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:25,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962885012] [2022-09-16 11:47:25,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962885012] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:25,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:25,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:25,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102746397] [2022-09-16 11:47:25,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:25,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:25,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:25,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:25,113 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 292 [2022-09-16 11:47:25,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 272 transitions, 763 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 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 11:47:25,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:25,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 292 [2022-09-16 11:47:25,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:25,625 INFO L130 PetriNetUnfolder]: 451/2610 cut-off events. [2022-09-16 11:47:25,625 INFO L131 PetriNetUnfolder]: For 473/479 co-relation queries the response was YES. [2022-09-16 11:47:25,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3881 conditions, 2610 events. 451/2610 cut-off events. For 473/479 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 24225 event pairs, 4 based on Foata normal form. 0/2179 useless extension candidates. Maximal degree in co-relation 3668. Up to 737 conditions per place. [2022-09-16 11:47:25,666 INFO L137 encePairwiseOnDemand]: 286/292 looper letters, 29 selfloop transitions, 5 changer transitions 0/277 dead transitions. [2022-09-16 11:47:25,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 277 transitions, 845 flow [2022-09-16 11:47:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1547 transitions. [2022-09-16 11:47:25,670 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8829908675799086 [2022-09-16 11:47:25,670 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1547 transitions. [2022-09-16 11:47:25,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1547 transitions. [2022-09-16 11:47:25,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:25,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1547 transitions. [2022-09-16 11:47:25,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.8333333333333) internal successors, (1547), 6 states have internal predecessors, (1547), 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 11:47:25,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:25,677 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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 11:47:25,677 INFO L175 Difference]: Start difference. First operand has 303 places, 272 transitions, 763 flow. Second operand 6 states and 1547 transitions. [2022-09-16 11:47:25,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 277 transitions, 845 flow [2022-09-16 11:47:25,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 277 transitions, 840 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:25,684 INFO L231 Difference]: Finished difference. Result has 305 places, 271 transitions, 766 flow [2022-09-16 11:47:25,684 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=766, PETRI_PLACES=305, PETRI_TRANSITIONS=271} [2022-09-16 11:47:25,685 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 48 predicate places. [2022-09-16 11:47:25,685 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 271 transitions, 766 flow [2022-09-16 11:47:25,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 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 11:47:25,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:25,685 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] [2022-09-16 11:47:25,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:47:25,685 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:25,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:25,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1261865569, now seen corresponding path program 1 times [2022-09-16 11:47:25,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:25,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143207132] [2022-09-16 11:47:25,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:25,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:25,745 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 11:47:25,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:25,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143207132] [2022-09-16 11:47:25,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143207132] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:25,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:25,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:25,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777395253] [2022-09-16 11:47:25,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:25,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:25,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:25,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:25,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:25,749 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 292 [2022-09-16 11:47:25,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 271 transitions, 766 flow. Second operand has 8 states, 8 states have (on average 249.125) internal successors, (1993), 8 states have internal predecessors, (1993), 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 11:47:25,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:25,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 292 [2022-09-16 11:47:25,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:26,121 INFO L130 PetriNetUnfolder]: 236/1381 cut-off events. [2022-09-16 11:47:26,121 INFO L131 PetriNetUnfolder]: For 302/302 co-relation queries the response was YES. [2022-09-16 11:47:26,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2440 conditions, 1381 events. 236/1381 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 10926 event pairs, 2 based on Foata normal form. 0/1250 useless extension candidates. Maximal degree in co-relation 2368. Up to 209 conditions per place. [2022-09-16 11:47:26,170 INFO L137 encePairwiseOnDemand]: 282/292 looper letters, 40 selfloop transitions, 11 changer transitions 0/286 dead transitions. [2022-09-16 11:47:26,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 286 transitions, 911 flow [2022-09-16 11:47:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:26,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2025 transitions. [2022-09-16 11:47:26,175 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8668664383561644 [2022-09-16 11:47:26,175 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2025 transitions. [2022-09-16 11:47:26,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2025 transitions. [2022-09-16 11:47:26,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:26,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2025 transitions. [2022-09-16 11:47:26,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 253.125) internal successors, (2025), 8 states have internal predecessors, (2025), 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 11:47:26,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 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 11:47:26,183 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 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 11:47:26,183 INFO L175 Difference]: Start difference. First operand has 305 places, 271 transitions, 766 flow. Second operand 8 states and 2025 transitions. [2022-09-16 11:47:26,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 286 transitions, 911 flow [2022-09-16 11:47:26,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 286 transitions, 902 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:26,190 INFO L231 Difference]: Finished difference. Result has 310 places, 272 transitions, 793 flow [2022-09-16 11:47:26,190 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=310, PETRI_TRANSITIONS=272} [2022-09-16 11:47:26,191 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 53 predicate places. [2022-09-16 11:47:26,191 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 272 transitions, 793 flow [2022-09-16 11:47:26,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.125) internal successors, (1993), 8 states have internal predecessors, (1993), 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 11:47:26,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:26,192 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] [2022-09-16 11:47:26,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:47:26,192 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:26,192 INFO L85 PathProgramCache]: Analyzing trace with hash 463127804, now seen corresponding path program 1 times [2022-09-16 11:47:26,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:26,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541279231] [2022-09-16 11:47:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:26,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:26,255 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 11:47:26,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:26,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541279231] [2022-09-16 11:47:26,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541279231] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:26,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:26,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:26,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730779938] [2022-09-16 11:47:26,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:26,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:26,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:26,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:26,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:26,258 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 292 [2022-09-16 11:47:26,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 272 transitions, 793 flow. Second operand has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 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 11:47:26,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:26,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 292 [2022-09-16 11:47:26,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:26,664 INFO L130 PetriNetUnfolder]: 214/1565 cut-off events. [2022-09-16 11:47:26,664 INFO L131 PetriNetUnfolder]: For 357/413 co-relation queries the response was YES. [2022-09-16 11:47:26,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2673 conditions, 1565 events. 214/1565 cut-off events. For 357/413 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 12984 event pairs, 7 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 2501. Up to 195 conditions per place. [2022-09-16 11:47:26,709 INFO L137 encePairwiseOnDemand]: 282/292 looper letters, 42 selfloop transitions, 9 changer transitions 0/288 dead transitions. [2022-09-16 11:47:26,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 288 transitions, 942 flow [2022-09-16 11:47:26,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:26,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2027 transitions. [2022-09-16 11:47:26,714 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.867722602739726 [2022-09-16 11:47:26,714 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2027 transitions. [2022-09-16 11:47:26,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2027 transitions. [2022-09-16 11:47:26,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:26,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2027 transitions. [2022-09-16 11:47:26,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 253.375) internal successors, (2027), 8 states have internal predecessors, (2027), 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 11:47:26,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 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 11:47:26,721 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 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 11:47:26,721 INFO L175 Difference]: Start difference. First operand has 310 places, 272 transitions, 793 flow. Second operand 8 states and 2027 transitions. [2022-09-16 11:47:26,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 288 transitions, 942 flow [2022-09-16 11:47:26,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 288 transitions, 933 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:26,729 INFO L231 Difference]: Finished difference. Result has 315 places, 273 transitions, 814 flow [2022-09-16 11:47:26,729 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=814, PETRI_PLACES=315, PETRI_TRANSITIONS=273} [2022-09-16 11:47:26,730 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 58 predicate places. [2022-09-16 11:47:26,730 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 273 transitions, 814 flow [2022-09-16 11:47:26,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 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 11:47:26,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:26,731 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] [2022-09-16 11:47:26,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:47:26,731 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash 186636344, now seen corresponding path program 1 times [2022-09-16 11:47:26,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:26,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142783997] [2022-09-16 11:47:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:26,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:26,763 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 11:47:26,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:26,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142783997] [2022-09-16 11:47:26,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142783997] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:26,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:26,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676211381] [2022-09-16 11:47:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:26,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:26,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:26,765 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 292 [2022-09-16 11:47:26,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 273 transitions, 814 flow. Second operand has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 11:47:26,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:26,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 292 [2022-09-16 11:47:26,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:27,176 INFO L130 PetriNetUnfolder]: 440/2199 cut-off events. [2022-09-16 11:47:27,177 INFO L131 PetriNetUnfolder]: For 518/806 co-relation queries the response was YES. [2022-09-16 11:47:27,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3413 conditions, 2199 events. 440/2199 cut-off events. For 518/806 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 22709 event pairs, 216 based on Foata normal form. 13/1744 useless extension candidates. Maximal degree in co-relation 3318. Up to 466 conditions per place. [2022-09-16 11:47:27,201 INFO L137 encePairwiseOnDemand]: 288/292 looper letters, 32 selfloop transitions, 3 changer transitions 0/283 dead transitions. [2022-09-16 11:47:27,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 283 transitions, 906 flow [2022-09-16 11:47:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:27,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:27,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1056 transitions. [2022-09-16 11:47:27,203 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9041095890410958 [2022-09-16 11:47:27,203 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1056 transitions. [2022-09-16 11:47:27,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1056 transitions. [2022-09-16 11:47:27,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:27,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1056 transitions. [2022-09-16 11:47:27,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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 11:47:27,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:27,207 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 11:47:27,207 INFO L175 Difference]: Start difference. First operand has 315 places, 273 transitions, 814 flow. Second operand 4 states and 1056 transitions. [2022-09-16 11:47:27,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 283 transitions, 906 flow [2022-09-16 11:47:27,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 283 transitions, 895 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:27,213 INFO L231 Difference]: Finished difference. Result has 313 places, 273 transitions, 812 flow [2022-09-16 11:47:27,213 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=812, PETRI_PLACES=313, PETRI_TRANSITIONS=273} [2022-09-16 11:47:27,214 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 56 predicate places. [2022-09-16 11:47:27,214 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 273 transitions, 812 flow [2022-09-16 11:47:27,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 11:47:27,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:27,214 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] [2022-09-16 11:47:27,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:47:27,214 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:27,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:27,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1837805152, now seen corresponding path program 1 times [2022-09-16 11:47:27,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:27,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234164336] [2022-09-16 11:47:27,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:27,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:27,271 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 11:47:27,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:27,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234164336] [2022-09-16 11:47:27,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234164336] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:27,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:27,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:27,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772754216] [2022-09-16 11:47:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:27,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:27,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:27,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:27,274 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 292 [2022-09-16 11:47:27,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 273 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 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 11:47:27,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:27,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 292 [2022-09-16 11:47:27,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:27,581 INFO L130 PetriNetUnfolder]: 212/1002 cut-off events. [2022-09-16 11:47:27,581 INFO L131 PetriNetUnfolder]: For 359/463 co-relation queries the response was YES. [2022-09-16 11:47:27,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1929 conditions, 1002 events. 212/1002 cut-off events. For 359/463 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8476 event pairs, 116 based on Foata normal form. 5/872 useless extension candidates. Maximal degree in co-relation 1823. Up to 271 conditions per place. [2022-09-16 11:47:27,627 INFO L137 encePairwiseOnDemand]: 284/292 looper letters, 48 selfloop transitions, 7 changer transitions 0/288 dead transitions. [2022-09-16 11:47:27,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 288 transitions, 966 flow [2022-09-16 11:47:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:27,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1767 transitions. [2022-09-16 11:47:27,630 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8644814090019569 [2022-09-16 11:47:27,630 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1767 transitions. [2022-09-16 11:47:27,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1767 transitions. [2022-09-16 11:47:27,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:27,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1767 transitions. [2022-09-16 11:47:27,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 252.42857142857142) internal successors, (1767), 7 states have internal predecessors, (1767), 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 11:47:27,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 11:47:27,636 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 11:47:27,636 INFO L175 Difference]: Start difference. First operand has 313 places, 273 transitions, 812 flow. Second operand 7 states and 1767 transitions. [2022-09-16 11:47:27,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 288 transitions, 966 flow [2022-09-16 11:47:27,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 288 transitions, 961 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:27,643 INFO L231 Difference]: Finished difference. Result has 320 places, 276 transitions, 843 flow [2022-09-16 11:47:27,643 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=843, PETRI_PLACES=320, PETRI_TRANSITIONS=276} [2022-09-16 11:47:27,643 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 63 predicate places. [2022-09-16 11:47:27,644 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 276 transitions, 843 flow [2022-09-16 11:47:27,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 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 11:47:27,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:27,644 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] [2022-09-16 11:47:27,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:47:27,644 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:27,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:27,645 INFO L85 PathProgramCache]: Analyzing trace with hash -410353818, now seen corresponding path program 1 times [2022-09-16 11:47:27,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:27,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772814779] [2022-09-16 11:47:27,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:27,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:27,697 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 11:47:27,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:27,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772814779] [2022-09-16 11:47:27,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772814779] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:27,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:27,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:27,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964374627] [2022-09-16 11:47:27,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:27,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:27,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:27,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:27,700 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 292 [2022-09-16 11:47:27,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 276 transitions, 843 flow. Second operand has 6 states, 6 states have (on average 248.66666666666666) internal successors, (1492), 6 states have internal predecessors, (1492), 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 11:47:27,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:27,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 292 [2022-09-16 11:47:27,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:27,991 INFO L130 PetriNetUnfolder]: 200/985 cut-off events. [2022-09-16 11:47:27,992 INFO L131 PetriNetUnfolder]: For 378/476 co-relation queries the response was YES. [2022-09-16 11:47:28,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2009 conditions, 985 events. 200/985 cut-off events. For 378/476 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7950 event pairs, 92 based on Foata normal form. 5/886 useless extension candidates. Maximal degree in co-relation 1902. Up to 222 conditions per place. [2022-09-16 11:47:28,024 INFO L137 encePairwiseOnDemand]: 284/292 looper letters, 54 selfloop transitions, 8 changer transitions 0/297 dead transitions. [2022-09-16 11:47:28,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 297 transitions, 1040 flow [2022-09-16 11:47:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1773 transitions. [2022-09-16 11:47:28,027 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8674168297455969 [2022-09-16 11:47:28,027 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1773 transitions. [2022-09-16 11:47:28,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1773 transitions. [2022-09-16 11:47:28,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:28,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1773 transitions. [2022-09-16 11:47:28,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 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 11:47:28,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 11:47:28,032 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 11:47:28,032 INFO L175 Difference]: Start difference. First operand has 320 places, 276 transitions, 843 flow. Second operand 7 states and 1773 transitions. [2022-09-16 11:47:28,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 297 transitions, 1040 flow [2022-09-16 11:47:28,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 297 transitions, 1038 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:28,040 INFO L231 Difference]: Finished difference. Result has 328 places, 280 transitions, 890 flow [2022-09-16 11:47:28,041 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=890, PETRI_PLACES=328, PETRI_TRANSITIONS=280} [2022-09-16 11:47:28,041 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 71 predicate places. [2022-09-16 11:47:28,041 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 280 transitions, 890 flow [2022-09-16 11:47:28,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.66666666666666) internal successors, (1492), 6 states have internal predecessors, (1492), 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 11:47:28,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:28,042 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] [2022-09-16 11:47:28,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 11:47:28,042 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:28,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:28,042 INFO L85 PathProgramCache]: Analyzing trace with hash -342994790, now seen corresponding path program 1 times [2022-09-16 11:47:28,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:28,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709938492] [2022-09-16 11:47:28,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:28,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:28,096 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 11:47:28,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:28,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709938492] [2022-09-16 11:47:28,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709938492] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:28,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:28,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:28,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789647482] [2022-09-16 11:47:28,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:28,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:28,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:28,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:28,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:28,099 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 292 [2022-09-16 11:47:28,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 280 transitions, 890 flow. Second operand has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 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 11:47:28,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:28,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 292 [2022-09-16 11:47:28,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:28,626 INFO L130 PetriNetUnfolder]: 480/2510 cut-off events. [2022-09-16 11:47:28,626 INFO L131 PetriNetUnfolder]: For 654/804 co-relation queries the response was YES. [2022-09-16 11:47:28,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4159 conditions, 2510 events. 480/2510 cut-off events. For 654/804 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 25272 event pairs, 2 based on Foata normal form. 0/2097 useless extension candidates. Maximal degree in co-relation 3687. Up to 486 conditions per place. [2022-09-16 11:47:28,665 INFO L137 encePairwiseOnDemand]: 282/292 looper letters, 38 selfloop transitions, 9 changer transitions 0/294 dead transitions. [2022-09-16 11:47:28,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 294 transitions, 1020 flow [2022-09-16 11:47:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2024 transitions. [2022-09-16 11:47:28,669 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8664383561643836 [2022-09-16 11:47:28,669 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2024 transitions. [2022-09-16 11:47:28,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2024 transitions. [2022-09-16 11:47:28,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:28,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2024 transitions. [2022-09-16 11:47:28,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 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 11:47:28,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 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 11:47:28,675 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 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 11:47:28,675 INFO L175 Difference]: Start difference. First operand has 328 places, 280 transitions, 890 flow. Second operand 8 states and 2024 transitions. [2022-09-16 11:47:28,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 294 transitions, 1020 flow [2022-09-16 11:47:28,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 294 transitions, 1020 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:47:28,683 INFO L231 Difference]: Finished difference. Result has 337 places, 281 transitions, 920 flow [2022-09-16 11:47:28,683 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=920, PETRI_PLACES=337, PETRI_TRANSITIONS=281} [2022-09-16 11:47:28,684 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 80 predicate places. [2022-09-16 11:47:28,684 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 281 transitions, 920 flow [2022-09-16 11:47:28,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 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 11:47:28,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:28,684 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] [2022-09-16 11:47:28,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-16 11:47:28,685 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:28,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:28,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2042903002, now seen corresponding path program 1 times [2022-09-16 11:47:28,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:28,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777650486] [2022-09-16 11:47:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:28,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:28,742 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 11:47:28,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:28,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777650486] [2022-09-16 11:47:28,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777650486] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:28,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:28,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:28,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944820502] [2022-09-16 11:47:28,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:28,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:28,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:28,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:28,745 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 292 [2022-09-16 11:47:28,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 281 transitions, 920 flow. Second operand has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 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 11:47:28,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:28,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 292 [2022-09-16 11:47:28,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:29,295 INFO L130 PetriNetUnfolder]: 402/2404 cut-off events. [2022-09-16 11:47:29,295 INFO L131 PetriNetUnfolder]: For 710/836 co-relation queries the response was YES. [2022-09-16 11:47:29,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4093 conditions, 2404 events. 402/2404 cut-off events. For 710/836 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 24023 event pairs, 2 based on Foata normal form. 0/2081 useless extension candidates. Maximal degree in co-relation 3615. Up to 432 conditions per place. [2022-09-16 11:47:29,323 INFO L137 encePairwiseOnDemand]: 282/292 looper letters, 41 selfloop transitions, 9 changer transitions 0/297 dead transitions. [2022-09-16 11:47:29,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 297 transitions, 1067 flow [2022-09-16 11:47:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:29,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2026 transitions. [2022-09-16 11:47:29,325 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8672945205479452 [2022-09-16 11:47:29,325 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2026 transitions. [2022-09-16 11:47:29,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2026 transitions. [2022-09-16 11:47:29,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:29,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2026 transitions. [2022-09-16 11:47:29,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 253.25) internal successors, (2026), 8 states have internal predecessors, (2026), 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 11:47:29,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 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 11:47:29,330 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 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 11:47:29,331 INFO L175 Difference]: Start difference. First operand has 337 places, 281 transitions, 920 flow. Second operand 8 states and 2026 transitions. [2022-09-16 11:47:29,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 297 transitions, 1067 flow [2022-09-16 11:47:29,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 297 transitions, 1058 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:29,340 INFO L231 Difference]: Finished difference. Result has 342 places, 282 transitions, 941 flow [2022-09-16 11:47:29,340 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=941, PETRI_PLACES=342, PETRI_TRANSITIONS=282} [2022-09-16 11:47:29,340 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 85 predicate places. [2022-09-16 11:47:29,341 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 282 transitions, 941 flow [2022-09-16 11:47:29,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 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 11:47:29,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:29,341 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] [2022-09-16 11:47:29,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 11:47:29,341 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash -656754518, now seen corresponding path program 1 times [2022-09-16 11:47:29,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:29,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69709387] [2022-09-16 11:47:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:29,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:29,392 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 11:47:29,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:29,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69709387] [2022-09-16 11:47:29,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69709387] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:29,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:29,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:29,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822791393] [2022-09-16 11:47:29,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:29,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:29,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:29,395 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 292 [2022-09-16 11:47:29,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 282 transitions, 941 flow. Second operand has 6 states, 6 states have (on average 248.66666666666666) internal successors, (1492), 6 states have internal predecessors, (1492), 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 11:47:29,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:29,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 292 [2022-09-16 11:47:29,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:29,856 INFO L130 PetriNetUnfolder]: 656/2344 cut-off events. [2022-09-16 11:47:29,856 INFO L131 PetriNetUnfolder]: For 1028/1308 co-relation queries the response was YES. [2022-09-16 11:47:29,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4455 conditions, 2344 events. 656/2344 cut-off events. For 1028/1308 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 26497 event pairs, 348 based on Foata normal form. 19/1865 useless extension candidates. Maximal degree in co-relation 4349. Up to 741 conditions per place. [2022-09-16 11:47:29,890 INFO L137 encePairwiseOnDemand]: 284/292 looper letters, 40 selfloop transitions, 7 changer transitions 4/296 dead transitions. [2022-09-16 11:47:29,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 296 transitions, 1079 flow [2022-09-16 11:47:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1766 transitions. [2022-09-16 11:47:29,892 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8639921722113503 [2022-09-16 11:47:29,892 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1766 transitions. [2022-09-16 11:47:29,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1766 transitions. [2022-09-16 11:47:29,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:29,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1766 transitions. [2022-09-16 11:47:29,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 252.28571428571428) internal successors, (1766), 7 states have internal predecessors, (1766), 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 11:47:29,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 11:47:29,898 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 11:47:29,898 INFO L175 Difference]: Start difference. First operand has 342 places, 282 transitions, 941 flow. Second operand 7 states and 1766 transitions. [2022-09-16 11:47:29,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 296 transitions, 1079 flow [2022-09-16 11:47:29,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 296 transitions, 1068 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:29,908 INFO L231 Difference]: Finished difference. Result has 346 places, 285 transitions, 966 flow [2022-09-16 11:47:29,908 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=966, PETRI_PLACES=346, PETRI_TRANSITIONS=285} [2022-09-16 11:47:29,909 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 89 predicate places. [2022-09-16 11:47:29,909 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 285 transitions, 966 flow [2022-09-16 11:47:29,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.66666666666666) internal successors, (1492), 6 states have internal predecessors, (1492), 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 11:47:29,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:29,909 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] [2022-09-16 11:47:29,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-16 11:47:29,909 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1842477535, now seen corresponding path program 1 times [2022-09-16 11:47:29,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:29,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057949231] [2022-09-16 11:47:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:29,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:29,967 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 11:47:29,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:29,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057949231] [2022-09-16 11:47:29,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057949231] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:29,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:29,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:29,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785542501] [2022-09-16 11:47:29,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:29,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:29,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:29,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:29,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:29,970 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 292 [2022-09-16 11:47:29,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 285 transitions, 966 flow. Second operand has 6 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 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 11:47:29,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:29,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 292 [2022-09-16 11:47:29,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:30,492 INFO L130 PetriNetUnfolder]: 608/2283 cut-off events. [2022-09-16 11:47:30,492 INFO L131 PetriNetUnfolder]: For 1080/1346 co-relation queries the response was YES. [2022-09-16 11:47:30,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 2283 events. 608/2283 cut-off events. For 1080/1346 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 25228 event pairs, 288 based on Foata normal form. 13/1901 useless extension candidates. Maximal degree in co-relation 4551. Up to 616 conditions per place. [2022-09-16 11:47:30,521 INFO L137 encePairwiseOnDemand]: 284/292 looper letters, 0 selfloop transitions, 0 changer transitions 306/306 dead transitions. [2022-09-16 11:47:30,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 306 transitions, 1160 flow [2022-09-16 11:47:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:30,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:30,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1772 transitions. [2022-09-16 11:47:30,524 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8669275929549902 [2022-09-16 11:47:30,524 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1772 transitions. [2022-09-16 11:47:30,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1772 transitions. [2022-09-16 11:47:30,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:30,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1772 transitions. [2022-09-16 11:47:30,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 253.14285714285714) internal successors, (1772), 7 states have internal predecessors, (1772), 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 11:47:30,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 11:47:30,529 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 11:47:30,529 INFO L175 Difference]: Start difference. First operand has 346 places, 285 transitions, 966 flow. Second operand 7 states and 1772 transitions. [2022-09-16 11:47:30,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 306 transitions, 1160 flow [2022-09-16 11:47:30,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 306 transitions, 1158 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:30,540 INFO L231 Difference]: Finished difference. Result has 350 places, 0 transitions, 0 flow [2022-09-16 11:47:30,540 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=350, PETRI_TRANSITIONS=0} [2022-09-16 11:47:30,540 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 93 predicate places. [2022-09-16 11:47:30,540 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 0 transitions, 0 flow [2022-09-16 11:47:30,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 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 11:47:30,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-09-16 11:47:30,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-09-16 11:47:30,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-09-16 11:47:30,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-09-16 11:47:30,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-09-16 11:47:30,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-09-16 11:47:30,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-09-16 11:47:30,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-09-16 11:47:30,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-09-16 11:47:30,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-09-16 11:47:30,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-09-16 11:47:30,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-09-16 11:47:30,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-09-16 11:47:30,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-09-16 11:47:30,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-09-16 11:47:30,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-09-16 11:47:30,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-09-16 11:47:30,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-09-16 11:47:30,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-09-16 11:47:30,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-09-16 11:47:30,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-09-16 11:47:30,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-09-16 11:47:30,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-09-16 11:47:30,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-09-16 11:47:30,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-09-16 11:47:30,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-09-16 11:47:30,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-09-16 11:47:30,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-09-16 11:47:30,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-09-16 11:47:30,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-09-16 11:47:30,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-09-16 11:47:30,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-09-16 11:47:30,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-09-16 11:47:30,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-09-16 11:47:30,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-09-16 11:47:30,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-09-16 11:47:30,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-09-16 11:47:30,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-09-16 11:47:30,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-09-16 11:47:30,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-16 11:47:30,548 INFO L444 BasicCegarLoop]: Path program 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] [2022-09-16 11:47:30,552 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:47:30,552 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:47:30,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:47:30 BasicIcfg [2022-09-16 11:47:30,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:47:30,556 INFO L158 Benchmark]: Toolchain (without parser) took 13894.90ms. Allocated memory was 175.1MB in the beginning and 677.4MB in the end (delta: 502.3MB). Free memory was 121.5MB in the beginning and 440.8MB in the end (delta: -319.2MB). Peak memory consumption was 374.4MB. Max. memory is 8.0GB. [2022-09-16 11:47:30,557 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 175.1MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:47:30,557 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.62ms. Allocated memory is still 175.1MB. Free memory was 121.3MB in the beginning and 151.6MB in the end (delta: -30.4MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-09-16 11:47:30,557 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.91ms. Allocated memory is still 175.1MB. Free memory was 151.6MB in the beginning and 149.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:47:30,557 INFO L158 Benchmark]: Boogie Preprocessor took 33.60ms. Allocated memory is still 175.1MB. Free memory was 149.5MB in the beginning and 148.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:47:30,557 INFO L158 Benchmark]: RCFGBuilder took 587.03ms. Allocated memory is still 175.1MB. Free memory was 147.8MB in the beginning and 127.2MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-09-16 11:47:30,558 INFO L158 Benchmark]: TraceAbstraction took 13001.58ms. Allocated memory was 175.1MB in the beginning and 677.4MB in the end (delta: 502.3MB). Free memory was 126.5MB in the beginning and 440.8MB in the end (delta: -314.3MB). Peak memory consumption was 380.0MB. Max. memory is 8.0GB. [2022-09-16 11:47:30,559 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 175.1MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.62ms. Allocated memory is still 175.1MB. Free memory was 121.3MB in the beginning and 151.6MB in the end (delta: -30.4MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.91ms. Allocated memory is still 175.1MB. Free memory was 151.6MB in the beginning and 149.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.60ms. Allocated memory is still 175.1MB. Free memory was 149.5MB in the beginning and 148.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 587.03ms. Allocated memory is still 175.1MB. Free memory was 147.8MB in the beginning and 127.2MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 13001.58ms. Allocated memory was 175.1MB in the beginning and 677.4MB in the end (delta: 502.3MB). Free memory was 126.5MB in the beginning and 440.8MB in the end (delta: -314.3MB). Peak memory consumption was 380.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: 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 7 procedures, 457 locations, 39 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: 12.8s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1463 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1463 mSDsluCounter, 768 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 983 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2461 IncrementalHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 377 mSDtfsCounter, 2461 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=966occurred in iteration=26, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1986 ConstructedInterpolants, 0 QuantifiedInterpolants, 4157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:47:30,595 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...