/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/pthread/queue.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:26:51,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:26:51,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:26:51,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:26:51,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:26:51,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:26:51,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:26:51,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:26:51,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:26:51,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:26:51,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:26:51,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:26:51,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:26:51,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:26:51,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:26:51,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:26:51,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:26:51,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:26:51,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:26:51,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:26:51,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:26:51,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:26:51,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:26:51,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:26:51,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:26:51,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:26:51,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:26:51,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:26:51,976 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 11:26:52,010 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:26:52,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:26:52,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:26:52,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:26:52,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:26:52,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:26:52,014 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:26:52,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:26:52,015 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:26:52,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:26:52,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:26:52,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:26:52,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:26:52,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:26:52,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:26:52,016 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:26:52,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:26:52,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:26:52,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:26:52,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:26:52,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:26:52,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:26:52,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:26:52,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:26:52,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:26:52,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:26:52,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:26:52,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:26:52,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:26:52,019 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:26:52,019 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:26:52,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:26:52,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:26:52,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:26:52,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:26:52,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:26:52,259 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:26:52,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2022-09-16 11:26:52,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50e7415c1/fc2201da8fb34a468b4d43cb11557ea8/FLAGdde9ef829 [2022-09-16 11:26:52,853 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:26:52,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2022-09-16 11:26:52,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50e7415c1/fc2201da8fb34a468b4d43cb11557ea8/FLAGdde9ef829 [2022-09-16 11:26:53,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50e7415c1/fc2201da8fb34a468b4d43cb11557ea8 [2022-09-16 11:26:53,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:26:53,178 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:26:53,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:26:53,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:26:53,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:26:53,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:26:53" (1/1) ... [2022-09-16 11:26:53,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350d07f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53, skipping insertion in model container [2022-09-16 11:26:53,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:26:53" (1/1) ... [2022-09-16 11:26:53,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:26:53,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:26:53,632 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] [2022-09-16 11:26:53,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] [2022-09-16 11:26:53,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] [2022-09-16 11:26:53,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:26:53,659 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:26:53,697 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] [2022-09-16 11:26:53,699 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] [2022-09-16 11:26:53,701 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] [2022-09-16 11:26:53,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:26:53,747 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:26:53,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53 WrapperNode [2022-09-16 11:26:53,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:26:53,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:26:53,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:26:53,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:26:53,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53" (1/1) ... [2022-09-16 11:26:53,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53" (1/1) ... [2022-09-16 11:26:53,813 INFO L138 Inliner]: procedures = 274, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 262 [2022-09-16 11:26:53,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:26:53,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:26:53,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:26:53,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:26:53,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53" (1/1) ... [2022-09-16 11:26:53,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53" (1/1) ... [2022-09-16 11:26:53,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53" (1/1) ... [2022-09-16 11:26:53,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53" (1/1) ... [2022-09-16 11:26:53,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53" (1/1) ... [2022-09-16 11:26:53,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53" (1/1) ... [2022-09-16 11:26:53,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53" (1/1) ... [2022-09-16 11:26:53,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:26:53,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:26:53,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:26:53,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:26:53,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53" (1/1) ... [2022-09-16 11:26:53,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:26:53,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:53,899 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 11:26:53,911 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 11:26:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-09-16 11:26:53,933 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-09-16 11:26:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-09-16 11:26:53,933 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-09-16 11:26:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:26:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:26:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:26:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:26:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:26:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:26:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:26:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:26:53,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:26:53,935 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 11:26:54,056 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:26:54,057 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:26:54,482 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:26:54,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:26:54,495 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 11:26:54,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:26:54 BoogieIcfgContainer [2022-09-16 11:26:54,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:26:54,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:26:54,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:26:54,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:26:54,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:26:53" (1/3) ... [2022-09-16 11:26:54,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b63c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:26:54, skipping insertion in model container [2022-09-16 11:26:54,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:53" (2/3) ... [2022-09-16 11:26:54,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b63c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:26:54, skipping insertion in model container [2022-09-16 11:26:54,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:26:54" (3/3) ... [2022-09-16 11:26:54,511 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2022-09-16 11:26:54,528 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:26:54,529 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-09-16 11:26:54,529 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:26:54,717 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:26:54,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 307 transitions, 630 flow [2022-09-16 11:26:54,856 INFO L130 PetriNetUnfolder]: 15/305 cut-off events. [2022-09-16 11:26:54,856 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:26:54,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 305 events. 15/305 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 461 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-09-16 11:26:54,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 299 places, 307 transitions, 630 flow [2022-09-16 11:26:54,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 291 transitions, 591 flow [2022-09-16 11:26:54,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:26:54,899 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;@63f13ae0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:26:54,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-09-16 11:26:54,921 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2022-09-16 11:26:54,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:26:54,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:54,923 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 11:26:54,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:26:54,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:54,928 INFO L85 PathProgramCache]: Analyzing trace with hash -144585435, now seen corresponding path program 1 times [2022-09-16 11:26:54,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:54,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630659627] [2022-09-16 11:26:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:54,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:55,480 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 11:26:55,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:55,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630659627] [2022-09-16 11:26:55,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630659627] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:55,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:55,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:26:55,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760131296] [2022-09-16 11:26:55,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:55,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:26:55,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:55,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:26:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:26:55,545 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 307 [2022-09-16 11:26:55,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 291 transitions, 591 flow. Second operand has 12 states, 12 states have (on average 232.33333333333334) internal successors, (2788), 12 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:55,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:55,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 307 [2022-09-16 11:26:55,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:56,864 INFO L130 PetriNetUnfolder]: 1003/4827 cut-off events. [2022-09-16 11:26:56,864 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-09-16 11:26:56,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6351 conditions, 4827 events. 1003/4827 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 42049 event pairs, 789 based on Foata normal form. 202/4357 useless extension candidates. Maximal degree in co-relation 6146. Up to 1435 conditions per place. [2022-09-16 11:26:56,969 INFO L137 encePairwiseOnDemand]: 290/307 looper letters, 52 selfloop transitions, 12 changer transitions 0/281 dead transitions. [2022-09-16 11:26:56,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 281 transitions, 699 flow [2022-09-16 11:26:56,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:26:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:26:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3059 transitions. [2022-09-16 11:26:56,994 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7664745677774993 [2022-09-16 11:26:56,995 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3059 transitions. [2022-09-16 11:26:56,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3059 transitions. [2022-09-16 11:26:57,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:57,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3059 transitions. [2022-09-16 11:26:57,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 235.30769230769232) internal successors, (3059), 13 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,031 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,033 INFO L175 Difference]: Start difference. First operand has 284 places, 291 transitions, 591 flow. Second operand 13 states and 3059 transitions. [2022-09-16 11:26:57,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 281 transitions, 699 flow [2022-09-16 11:26:57,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 281 transitions, 694 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:26:57,050 INFO L231 Difference]: Finished difference. Result has 288 places, 281 transitions, 590 flow [2022-09-16 11:26:57,052 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=590, PETRI_PLACES=288, PETRI_TRANSITIONS=281} [2022-09-16 11:26:57,056 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 4 predicate places. [2022-09-16 11:26:57,056 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 281 transitions, 590 flow [2022-09-16 11:26:57,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 232.33333333333334) internal successors, (2788), 12 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:57,058 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 11:26:57,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:26:57,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:26:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:57,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1258785616, now seen corresponding path program 1 times [2022-09-16 11:26:57,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:57,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033124435] [2022-09-16 11:26:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:57,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:57,196 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 11:26:57,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:57,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033124435] [2022-09-16 11:26:57,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033124435] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:57,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:57,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:57,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22032386] [2022-09-16 11:26:57,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:57,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:57,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:57,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:57,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:57,204 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 307 [2022-09-16 11:26:57,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 281 transitions, 590 flow. Second operand has 4 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:57,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 307 [2022-09-16 11:26:57,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:57,333 INFO L130 PetriNetUnfolder]: 34/487 cut-off events. [2022-09-16 11:26:57,333 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-09-16 11:26:57,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 487 events. 34/487 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1766 event pairs, 5 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 487. Up to 39 conditions per place. [2022-09-16 11:26:57,341 INFO L137 encePairwiseOnDemand]: 300/307 looper letters, 21 selfloop transitions, 4 changer transitions 0/291 dead transitions. [2022-09-16 11:26:57,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 291 transitions, 663 flow [2022-09-16 11:26:57,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:57,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1438 transitions. [2022-09-16 11:26:57,346 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9368078175895765 [2022-09-16 11:26:57,346 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1438 transitions. [2022-09-16 11:26:57,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1438 transitions. [2022-09-16 11:26:57,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:57,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1438 transitions. [2022-09-16 11:26:57,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 287.6) internal successors, (1438), 5 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,355 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,355 INFO L175 Difference]: Start difference. First operand has 288 places, 281 transitions, 590 flow. Second operand 5 states and 1438 transitions. [2022-09-16 11:26:57,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 291 transitions, 663 flow [2022-09-16 11:26:57,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 291 transitions, 640 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-09-16 11:26:57,365 INFO L231 Difference]: Finished difference. Result has 284 places, 284 transitions, 599 flow [2022-09-16 11:26:57,366 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=599, PETRI_PLACES=284, PETRI_TRANSITIONS=284} [2022-09-16 11:26:57,367 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 0 predicate places. [2022-09-16 11:26:57,367 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 284 transitions, 599 flow [2022-09-16 11:26:57,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:57,368 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 11:26:57,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:26:57,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:26:57,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:57,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1744336020, now seen corresponding path program 1 times [2022-09-16 11:26:57,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:57,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331088833] [2022-09-16 11:26:57,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:57,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:05,236 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 11:27:05,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:05,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331088833] [2022-09-16 11:27:05,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331088833] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:05,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:05,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-16 11:27:05,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169677781] [2022-09-16 11:27:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:05,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:27:05,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:05,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:27:05,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:27:05,242 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 307 [2022-09-16 11:27:05,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 284 transitions, 599 flow. Second operand has 19 states, 19 states have (on average 213.78947368421052) internal successors, (4062), 19 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:05,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:05,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 307 [2022-09-16 11:27:05,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:12,331 INFO L130 PetriNetUnfolder]: 3593/11409 cut-off events. [2022-09-16 11:27:12,331 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-09-16 11:27:12,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17280 conditions, 11409 events. 3593/11409 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 112232 event pairs, 2883 based on Foata normal form. 0/10033 useless extension candidates. Maximal degree in co-relation 17187. Up to 4855 conditions per place. [2022-09-16 11:27:12,494 INFO L137 encePairwiseOnDemand]: 286/307 looper letters, 119 selfloop transitions, 27 changer transitions 0/347 dead transitions. [2022-09-16 11:27:12,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 347 transitions, 1023 flow [2022-09-16 11:27:12,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-16 11:27:12,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-16 11:27:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4390 transitions. [2022-09-16 11:27:12,509 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7149837133550488 [2022-09-16 11:27:12,509 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4390 transitions. [2022-09-16 11:27:12,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4390 transitions. [2022-09-16 11:27:12,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:12,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4390 transitions. [2022-09-16 11:27:12,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 219.5) internal successors, (4390), 20 states have internal predecessors, (4390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:12,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 307.0) internal successors, (6447), 21 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:12,540 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 307.0) internal successors, (6447), 21 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:12,540 INFO L175 Difference]: Start difference. First operand has 284 places, 284 transitions, 599 flow. Second operand 20 states and 4390 transitions. [2022-09-16 11:27:12,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 347 transitions, 1023 flow [2022-09-16 11:27:12,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 347 transitions, 1021 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:27:12,549 INFO L231 Difference]: Finished difference. Result has 311 places, 305 transitions, 754 flow [2022-09-16 11:27:12,550 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=754, PETRI_PLACES=311, PETRI_TRANSITIONS=305} [2022-09-16 11:27:12,551 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 27 predicate places. [2022-09-16 11:27:12,551 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 305 transitions, 754 flow [2022-09-16 11:27:12,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 213.78947368421052) internal successors, (4062), 19 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:12,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:12,553 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 11:27:12,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:27:12,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:12,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:12,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1636526738, now seen corresponding path program 1 times [2022-09-16 11:27:12,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:12,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138874448] [2022-09-16 11:27:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:12,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:13,259 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 11:27:13,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:13,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138874448] [2022-09-16 11:27:13,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138874448] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:13,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:13,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-16 11:27:13,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495480546] [2022-09-16 11:27:13,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:13,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-16 11:27:13,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:13,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-16 11:27:13,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:27:13,271 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 307 [2022-09-16 11:27:13,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 305 transitions, 754 flow. Second operand has 20 states, 20 states have (on average 203.2) internal successors, (4064), 20 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:13,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:13,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 307 [2022-09-16 11:27:13,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:16,214 INFO L130 PetriNetUnfolder]: 4207/14459 cut-off events. [2022-09-16 11:27:16,215 INFO L131 PetriNetUnfolder]: For 1209/1213 co-relation queries the response was YES. [2022-09-16 11:27:16,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22831 conditions, 14459 events. 4207/14459 cut-off events. For 1209/1213 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 150405 event pairs, 902 based on Foata normal form. 102/12992 useless extension candidates. Maximal degree in co-relation 22712. Up to 4446 conditions per place. [2022-09-16 11:27:16,311 INFO L137 encePairwiseOnDemand]: 285/307 looper letters, 192 selfloop transitions, 44 changer transitions 0/428 dead transitions. [2022-09-16 11:27:16,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 428 transitions, 1530 flow [2022-09-16 11:27:16,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:27:16,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 11:27:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4646 transitions. [2022-09-16 11:27:16,323 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6878886585726977 [2022-09-16 11:27:16,323 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4646 transitions. [2022-09-16 11:27:16,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4646 transitions. [2022-09-16 11:27:16,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:16,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4646 transitions. [2022-09-16 11:27:16,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 211.1818181818182) internal successors, (4646), 22 states have internal predecessors, (4646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:16,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:16,349 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:16,350 INFO L175 Difference]: Start difference. First operand has 311 places, 305 transitions, 754 flow. Second operand 22 states and 4646 transitions. [2022-09-16 11:27:16,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 428 transitions, 1530 flow [2022-09-16 11:27:16,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 428 transitions, 1517 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:27:16,368 INFO L231 Difference]: Finished difference. Result has 332 places, 334 transitions, 999 flow [2022-09-16 11:27:16,369 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=999, PETRI_PLACES=332, PETRI_TRANSITIONS=334} [2022-09-16 11:27:16,370 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 48 predicate places. [2022-09-16 11:27:16,370 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 334 transitions, 999 flow [2022-09-16 11:27:16,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 203.2) internal successors, (4064), 20 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:16,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:16,372 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:16,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:27:16,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:16,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:16,373 INFO L85 PathProgramCache]: Analyzing trace with hash 473094309, now seen corresponding path program 1 times [2022-09-16 11:27:16,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:16,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224936841] [2022-09-16 11:27:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:16,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:27:16,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:16,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224936841] [2022-09-16 11:27:16,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224936841] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:16,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:16,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:27:16,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652838420] [2022-09-16 11:27:16,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:16,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:27:16,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:16,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:27:16,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:27:16,436 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 307 [2022-09-16 11:27:16,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 334 transitions, 999 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:16,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:16,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 307 [2022-09-16 11:27:16,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:16,738 INFO L130 PetriNetUnfolder]: 167/2210 cut-off events. [2022-09-16 11:27:16,739 INFO L131 PetriNetUnfolder]: For 253/254 co-relation queries the response was YES. [2022-09-16 11:27:16,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 2210 events. 167/2210 cut-off events. For 253/254 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 19105 event pairs, 20 based on Foata normal form. 18/1986 useless extension candidates. Maximal degree in co-relation 2903. Up to 140 conditions per place. [2022-09-16 11:27:16,763 INFO L137 encePairwiseOnDemand]: 301/307 looper letters, 13 selfloop transitions, 8 changer transitions 0/337 dead transitions. [2022-09-16 11:27:16,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 337 transitions, 1048 flow [2022-09-16 11:27:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:27:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:27:16,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1429 transitions. [2022-09-16 11:27:16,767 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9309446254071662 [2022-09-16 11:27:16,767 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1429 transitions. [2022-09-16 11:27:16,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1429 transitions. [2022-09-16 11:27:16,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:16,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1429 transitions. [2022-09-16 11:27:16,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.8) internal successors, (1429), 5 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:16,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:16,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:16,774 INFO L175 Difference]: Start difference. First operand has 332 places, 334 transitions, 999 flow. Second operand 5 states and 1429 transitions. [2022-09-16 11:27:16,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 337 transitions, 1048 flow [2022-09-16 11:27:16,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 337 transitions, 1015 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-09-16 11:27:16,786 INFO L231 Difference]: Finished difference. Result has 328 places, 334 transitions, 986 flow [2022-09-16 11:27:16,787 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=986, PETRI_PLACES=328, PETRI_TRANSITIONS=334} [2022-09-16 11:27:16,789 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 44 predicate places. [2022-09-16 11:27:16,789 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 334 transitions, 986 flow [2022-09-16 11:27:16,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:16,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:16,791 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:16,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:27:16,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:16,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:16,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1781022561, now seen corresponding path program 1 times [2022-09-16 11:27:16,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:16,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113718718] [2022-09-16 11:27:16,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:16,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:16,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:16,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113718718] [2022-09-16 11:27:16,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113718718] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:16,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842287517] [2022-09-16 11:27:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:16,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:16,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:16,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:27:16,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:27:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:17,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:27:17,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:17,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:27:17,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842287517] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:17,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:27:17,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:27:17,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241296704] [2022-09-16 11:27:17,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:17,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:27:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:27:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:27:17,208 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 307 [2022-09-16 11:27:17,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 334 transitions, 986 flow. Second operand has 6 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 6 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:17,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:17,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 307 [2022-09-16 11:27:17,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:17,538 INFO L130 PetriNetUnfolder]: 165/2192 cut-off events. [2022-09-16 11:27:17,538 INFO L131 PetriNetUnfolder]: For 387/388 co-relation queries the response was YES. [2022-09-16 11:27:17,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3066 conditions, 2192 events. 165/2192 cut-off events. For 387/388 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 18875 event pairs, 5 based on Foata normal form. 18/1971 useless extension candidates. Maximal degree in co-relation 2978. Up to 95 conditions per place. [2022-09-16 11:27:17,566 INFO L137 encePairwiseOnDemand]: 302/307 looper letters, 19 selfloop transitions, 6 changer transitions 0/341 dead transitions. [2022-09-16 11:27:17,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 341 transitions, 1053 flow [2022-09-16 11:27:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:27:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:27:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2022-09-16 11:27:17,571 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9306654257794323 [2022-09-16 11:27:17,571 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2022-09-16 11:27:17,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2022-09-16 11:27:17,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:17,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2022-09-16 11:27:17,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:17,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:17,580 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:17,581 INFO L175 Difference]: Start difference. First operand has 328 places, 334 transitions, 986 flow. Second operand 7 states and 2000 transitions. [2022-09-16 11:27:17,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 341 transitions, 1053 flow [2022-09-16 11:27:17,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 341 transitions, 1041 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:27:17,591 INFO L231 Difference]: Finished difference. Result has 330 places, 333 transitions, 982 flow [2022-09-16 11:27:17,592 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=982, PETRI_PLACES=330, PETRI_TRANSITIONS=333} [2022-09-16 11:27:17,594 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 46 predicate places. [2022-09-16 11:27:17,595 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 333 transitions, 982 flow [2022-09-16 11:27:17,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 6 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:17,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:17,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:17,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:27:17,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-09-16 11:27:17,821 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:17,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1192785660, now seen corresponding path program 1 times [2022-09-16 11:27:17,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:17,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017719177] [2022-09-16 11:27:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:17,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:17,859 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 11:27:17,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:17,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017719177] [2022-09-16 11:27:17,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017719177] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:17,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:17,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:27:17,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289595448] [2022-09-16 11:27:17,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:17,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:27:17,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:17,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:27:17,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:27:17,862 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 307 [2022-09-16 11:27:17,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 333 transitions, 982 flow. Second operand has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:17,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:17,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 307 [2022-09-16 11:27:17,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:18,024 INFO L130 PetriNetUnfolder]: 70/1137 cut-off events. [2022-09-16 11:27:18,024 INFO L131 PetriNetUnfolder]: For 108/109 co-relation queries the response was YES. [2022-09-16 11:27:18,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 1137 events. 70/1137 cut-off events. For 108/109 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4738 event pairs, 5 based on Foata normal form. 0/988 useless extension candidates. Maximal degree in co-relation 1384. Up to 38 conditions per place. [2022-09-16 11:27:18,036 INFO L137 encePairwiseOnDemand]: 303/307 looper letters, 10 selfloop transitions, 3 changer transitions 0/306 dead transitions. [2022-09-16 11:27:18,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 306 transitions, 855 flow [2022-09-16 11:27:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:27:18,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:27:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 878 transitions. [2022-09-16 11:27:18,039 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9533116178067318 [2022-09-16 11:27:18,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 878 transitions. [2022-09-16 11:27:18,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 878 transitions. [2022-09-16 11:27:18,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:18,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 878 transitions. [2022-09-16 11:27:18,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:18,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:18,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:18,043 INFO L175 Difference]: Start difference. First operand has 330 places, 333 transitions, 982 flow. Second operand 3 states and 878 transitions. [2022-09-16 11:27:18,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 306 transitions, 855 flow [2022-09-16 11:27:18,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 306 transitions, 771 flow, removed 2 selfloop flow, removed 21 redundant places. [2022-09-16 11:27:18,050 INFO L231 Difference]: Finished difference. Result has 307 places, 303 transitions, 749 flow [2022-09-16 11:27:18,051 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=749, PETRI_PLACES=307, PETRI_TRANSITIONS=303} [2022-09-16 11:27:18,051 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 23 predicate places. [2022-09-16 11:27:18,052 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 303 transitions, 749 flow [2022-09-16 11:27:18,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:18,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:18,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:18,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:27:18,052 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:18,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:18,053 INFO L85 PathProgramCache]: Analyzing trace with hash -429721795, now seen corresponding path program 1 times [2022-09-16 11:27:18,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:18,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183996734] [2022-09-16 11:27:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:18,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:20,146 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 11:27:20,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:20,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183996734] [2022-09-16 11:27:20,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183996734] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:20,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:20,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-16 11:27:20,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720567227] [2022-09-16 11:27:20,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:20,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:27:20,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:27:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:27:20,150 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 307 [2022-09-16 11:27:20,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 303 transitions, 749 flow. Second operand has 18 states, 18 states have (on average 214.05555555555554) internal successors, (3853), 18 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:20,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:20,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 307 [2022-09-16 11:27:20,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:22,644 INFO L130 PetriNetUnfolder]: 1700/7628 cut-off events. [2022-09-16 11:27:22,644 INFO L131 PetriNetUnfolder]: For 358/361 co-relation queries the response was YES. [2022-09-16 11:27:22,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11425 conditions, 7628 events. 1700/7628 cut-off events. For 358/361 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 70828 event pairs, 1404 based on Foata normal form. 2/6836 useless extension candidates. Maximal degree in co-relation 11408. Up to 2630 conditions per place. [2022-09-16 11:27:22,687 INFO L137 encePairwiseOnDemand]: 285/307 looper letters, 92 selfloop transitions, 33 changer transitions 0/328 dead transitions. [2022-09-16 11:27:22,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 328 transitions, 1065 flow [2022-09-16 11:27:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-16 11:27:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-16 11:27:22,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4364 transitions. [2022-09-16 11:27:22,698 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7107491856677525 [2022-09-16 11:27:22,698 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4364 transitions. [2022-09-16 11:27:22,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4364 transitions. [2022-09-16 11:27:22,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:22,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4364 transitions. [2022-09-16 11:27:22,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 218.2) internal successors, (4364), 20 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:22,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 307.0) internal successors, (6447), 21 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:22,722 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 307.0) internal successors, (6447), 21 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:22,722 INFO L175 Difference]: Start difference. First operand has 307 places, 303 transitions, 749 flow. Second operand 20 states and 4364 transitions. [2022-09-16 11:27:22,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 328 transitions, 1065 flow [2022-09-16 11:27:22,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 328 transitions, 1062 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:27:22,732 INFO L231 Difference]: Finished difference. Result has 330 places, 313 transitions, 885 flow [2022-09-16 11:27:22,733 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=885, PETRI_PLACES=330, PETRI_TRANSITIONS=313} [2022-09-16 11:27:22,735 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 46 predicate places. [2022-09-16 11:27:22,735 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 313 transitions, 885 flow [2022-09-16 11:27:22,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 214.05555555555554) internal successors, (3853), 18 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:22,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:22,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:22,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:27:22,737 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:22,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:22,738 INFO L85 PathProgramCache]: Analyzing trace with hash 728827835, now seen corresponding path program 1 times [2022-09-16 11:27:22,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:22,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200380934] [2022-09-16 11:27:22,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:22,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:23,216 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 11:27:23,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:23,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200380934] [2022-09-16 11:27:23,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200380934] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:23,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:23,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-16 11:27:23,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341824549] [2022-09-16 11:27:23,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:23,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:27:23,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:23,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:27:23,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:27:23,222 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 307 [2022-09-16 11:27:23,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 313 transitions, 885 flow. Second operand has 19 states, 19 states have (on average 203.47368421052633) internal successors, (3866), 19 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:23,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:23,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 307 [2022-09-16 11:27:23,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:25,108 INFO L130 PetriNetUnfolder]: 1695/7592 cut-off events. [2022-09-16 11:27:25,108 INFO L131 PetriNetUnfolder]: For 731/735 co-relation queries the response was YES. [2022-09-16 11:27:25,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11593 conditions, 7592 events. 1695/7592 cut-off events. For 731/735 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 70641 event pairs, 850 based on Foata normal form. 6/6813 useless extension candidates. Maximal degree in co-relation 11571. Up to 2522 conditions per place. [2022-09-16 11:27:25,153 INFO L137 encePairwiseOnDemand]: 287/307 looper letters, 106 selfloop transitions, 29 changer transitions 0/329 dead transitions. [2022-09-16 11:27:25,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 329 transitions, 1211 flow [2022-09-16 11:27:25,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:27:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:27:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3734 transitions. [2022-09-16 11:27:25,161 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6757148027506333 [2022-09-16 11:27:25,161 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3734 transitions. [2022-09-16 11:27:25,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3734 transitions. [2022-09-16 11:27:25,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:25,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3734 transitions. [2022-09-16 11:27:25,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 207.44444444444446) internal successors, (3734), 18 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 307.0) internal successors, (5833), 19 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,177 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 307.0) internal successors, (5833), 19 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,178 INFO L175 Difference]: Start difference. First operand has 330 places, 313 transitions, 885 flow. Second operand 18 states and 3734 transitions. [2022-09-16 11:27:25,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 329 transitions, 1211 flow [2022-09-16 11:27:25,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 329 transitions, 1179 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-09-16 11:27:25,188 INFO L231 Difference]: Finished difference. Result has 333 places, 311 transitions, 899 flow [2022-09-16 11:27:25,189 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=899, PETRI_PLACES=333, PETRI_TRANSITIONS=311} [2022-09-16 11:27:25,190 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 49 predicate places. [2022-09-16 11:27:25,190 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 311 transitions, 899 flow [2022-09-16 11:27:25,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.47368421052633) internal successors, (3866), 19 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:25,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:25,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:27:25,192 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:25,192 INFO L85 PathProgramCache]: Analyzing trace with hash -82127817, now seen corresponding path program 1 times [2022-09-16 11:27:25,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:25,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927567451] [2022-09-16 11:27:25,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:25,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:25,234 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 11:27:25,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:25,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927567451] [2022-09-16 11:27:25,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927567451] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:25,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:25,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:27:25,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926133282] [2022-09-16 11:27:25,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:25,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:27:25,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:25,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:27:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:27:25,237 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 307 [2022-09-16 11:27:25,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 311 transitions, 899 flow. Second operand has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:25,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 307 [2022-09-16 11:27:25,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:25,511 INFO L130 PetriNetUnfolder]: 111/1450 cut-off events. [2022-09-16 11:27:25,511 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-09-16 11:27:25,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 1450 events. 111/1450 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6300 event pairs, 31 based on Foata normal form. 0/1294 useless extension candidates. Maximal degree in co-relation 2069. Up to 189 conditions per place. [2022-09-16 11:27:25,526 INFO L137 encePairwiseOnDemand]: 298/307 looper letters, 27 selfloop transitions, 4 changer transitions 0/323 dead transitions. [2022-09-16 11:27:25,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 323 transitions, 991 flow [2022-09-16 11:27:25,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:27:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:27:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1426 transitions. [2022-09-16 11:27:25,531 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9289902280130293 [2022-09-16 11:27:25,531 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1426 transitions. [2022-09-16 11:27:25,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1426 transitions. [2022-09-16 11:27:25,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:25,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1426 transitions. [2022-09-16 11:27:25,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,536 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,537 INFO L175 Difference]: Start difference. First operand has 333 places, 311 transitions, 899 flow. Second operand 5 states and 1426 transitions. [2022-09-16 11:27:25,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 323 transitions, 991 flow [2022-09-16 11:27:25,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 323 transitions, 937 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-09-16 11:27:25,544 INFO L231 Difference]: Finished difference. Result has 324 places, 314 transitions, 881 flow [2022-09-16 11:27:25,546 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=881, PETRI_PLACES=324, PETRI_TRANSITIONS=314} [2022-09-16 11:27:25,547 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 40 predicate places. [2022-09-16 11:27:25,547 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 314 transitions, 881 flow [2022-09-16 11:27:25,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:25,548 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:25,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:27:25,548 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash -690953012, now seen corresponding path program 1 times [2022-09-16 11:27:25,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:25,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479099149] [2022-09-16 11:27:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:25,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:27:25,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:25,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479099149] [2022-09-16 11:27:25,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479099149] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:25,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:25,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:27:25,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111743380] [2022-09-16 11:27:25,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:25,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:27:25,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:25,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:27:25,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:27:25,604 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 307 [2022-09-16 11:27:25,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 314 transitions, 881 flow. Second operand has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:25,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 307 [2022-09-16 11:27:25,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:25,852 INFO L130 PetriNetUnfolder]: 103/1416 cut-off events. [2022-09-16 11:27:25,853 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-09-16 11:27:25,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 1416 events. 103/1416 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6298 event pairs, 10 based on Foata normal form. 16/1325 useless extension candidates. Maximal degree in co-relation 2041. Up to 70 conditions per place. [2022-09-16 11:27:25,870 INFO L137 encePairwiseOnDemand]: 300/307 looper letters, 16 selfloop transitions, 8 changer transitions 0/316 dead transitions. [2022-09-16 11:27:25,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 316 transitions, 935 flow [2022-09-16 11:27:25,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:27:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:27:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1413 transitions. [2022-09-16 11:27:25,872 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9205211726384365 [2022-09-16 11:27:25,872 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1413 transitions. [2022-09-16 11:27:25,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1413 transitions. [2022-09-16 11:27:25,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:25,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1413 transitions. [2022-09-16 11:27:25,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,876 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,877 INFO L175 Difference]: Start difference. First operand has 324 places, 314 transitions, 881 flow. Second operand 5 states and 1413 transitions. [2022-09-16 11:27:25,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 316 transitions, 935 flow [2022-09-16 11:27:25,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 316 transitions, 933 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:27:25,884 INFO L231 Difference]: Finished difference. Result has 326 places, 313 transitions, 895 flow [2022-09-16 11:27:25,884 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=895, PETRI_PLACES=326, PETRI_TRANSITIONS=313} [2022-09-16 11:27:25,885 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 42 predicate places. [2022-09-16 11:27:25,885 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 313 transitions, 895 flow [2022-09-16 11:27:25,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:25,886 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:25,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:27:25,886 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:25,887 INFO L85 PathProgramCache]: Analyzing trace with hash 55293910, now seen corresponding path program 1 times [2022-09-16 11:27:25,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:25,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835181267] [2022-09-16 11:27:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:25,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:25,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:25,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835181267] [2022-09-16 11:27:25,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835181267] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:25,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628001510] [2022-09-16 11:27:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:25,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:25,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:25,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:27:25,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:27:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:26,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:27:26,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:26,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:27:26,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628001510] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:26,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:27:26,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:27:26,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073020165] [2022-09-16 11:27:26,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:26,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:27:26,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:26,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:27:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:27:26,129 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 307 [2022-09-16 11:27:26,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 313 transitions, 895 flow. Second operand has 6 states, 6 states have (on average 280.1666666666667) internal successors, (1681), 6 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:26,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:26,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 307 [2022-09-16 11:27:26,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:26,481 INFO L130 PetriNetUnfolder]: 103/1402 cut-off events. [2022-09-16 11:27:26,482 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2022-09-16 11:27:26,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 1402 events. 103/1402 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 5958 event pairs, 3 based on Foata normal form. 20/1316 useless extension candidates. Maximal degree in co-relation 2072. Up to 84 conditions per place. [2022-09-16 11:27:26,498 INFO L137 encePairwiseOnDemand]: 301/307 looper letters, 23 selfloop transitions, 6 changer transitions 0/321 dead transitions. [2022-09-16 11:27:26,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 321 transitions, 975 flow [2022-09-16 11:27:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:27:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:27:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1977 transitions. [2022-09-16 11:27:26,501 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9199627733829688 [2022-09-16 11:27:26,502 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1977 transitions. [2022-09-16 11:27:26,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1977 transitions. [2022-09-16 11:27:26,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:26,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1977 transitions. [2022-09-16 11:27:26,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 282.42857142857144) internal successors, (1977), 7 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:26,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:26,509 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:26,509 INFO L175 Difference]: Start difference. First operand has 326 places, 313 transitions, 895 flow. Second operand 7 states and 1977 transitions. [2022-09-16 11:27:26,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 321 transitions, 975 flow [2022-09-16 11:27:26,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 321 transitions, 963 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:27:26,516 INFO L231 Difference]: Finished difference. Result has 327 places, 311 transitions, 887 flow [2022-09-16 11:27:26,517 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=887, PETRI_PLACES=327, PETRI_TRANSITIONS=311} [2022-09-16 11:27:26,517 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 43 predicate places. [2022-09-16 11:27:26,518 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 311 transitions, 887 flow [2022-09-16 11:27:26,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 280.1666666666667) internal successors, (1681), 6 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:26,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:26,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:26,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:27:26,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-16 11:27:26,737 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:26,737 INFO L85 PathProgramCache]: Analyzing trace with hash 723281376, now seen corresponding path program 1 times [2022-09-16 11:27:26,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:26,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683463024] [2022-09-16 11:27:26,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:26,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:27,102 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 11:27:27,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:27,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683463024] [2022-09-16 11:27:27,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683463024] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:27,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:27,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-16 11:27:27,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000357274] [2022-09-16 11:27:27,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:27,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:27:27,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:27,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:27:27,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:27:27,106 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 307 [2022-09-16 11:27:27,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 311 transitions, 887 flow. Second operand has 17 states, 17 states have (on average 220.8235294117647) internal successors, (3754), 17 states have internal predecessors, (3754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:27,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:27,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 307 [2022-09-16 11:27:27,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:28,723 INFO L130 PetriNetUnfolder]: 1583/7514 cut-off events. [2022-09-16 11:27:28,723 INFO L131 PetriNetUnfolder]: For 918/922 co-relation queries the response was YES. [2022-09-16 11:27:28,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11618 conditions, 7514 events. 1583/7514 cut-off events. For 918/922 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 68865 event pairs, 1324 based on Foata normal form. 2/6831 useless extension candidates. Maximal degree in co-relation 11592. Up to 2513 conditions per place. [2022-09-16 11:27:28,769 INFO L137 encePairwiseOnDemand]: 290/307 looper letters, 78 selfloop transitions, 30 changer transitions 0/319 dead transitions. [2022-09-16 11:27:28,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 319 transitions, 1122 flow [2022-09-16 11:27:28,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:27:28,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:27:28,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3371 transitions. [2022-09-16 11:27:28,773 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7320304017372421 [2022-09-16 11:27:28,773 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3371 transitions. [2022-09-16 11:27:28,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3371 transitions. [2022-09-16 11:27:28,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:28,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3371 transitions. [2022-09-16 11:27:28,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 224.73333333333332) internal successors, (3371), 15 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:28,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 307.0) internal successors, (4912), 16 states have internal predecessors, (4912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:28,783 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 307.0) internal successors, (4912), 16 states have internal predecessors, (4912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:28,783 INFO L175 Difference]: Start difference. First operand has 327 places, 311 transitions, 887 flow. Second operand 15 states and 3371 transitions. [2022-09-16 11:27:28,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 319 transitions, 1122 flow [2022-09-16 11:27:28,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 319 transitions, 1109 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-16 11:27:28,884 INFO L231 Difference]: Finished difference. Result has 339 places, 314 transitions, 969 flow [2022-09-16 11:27:28,885 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=969, PETRI_PLACES=339, PETRI_TRANSITIONS=314} [2022-09-16 11:27:28,885 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 55 predicate places. [2022-09-16 11:27:28,885 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 314 transitions, 969 flow [2022-09-16 11:27:28,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 220.8235294117647) internal successors, (3754), 17 states have internal predecessors, (3754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:28,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:28,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:28,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:27:28,886 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:28,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:28,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1057975252, now seen corresponding path program 1 times [2022-09-16 11:27:28,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:28,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781887230] [2022-09-16 11:27:28,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:28,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:32,353 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 11:27:32,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:32,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781887230] [2022-09-16 11:27:32,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781887230] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:32,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:32,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-09-16 11:27:32,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596119419] [2022-09-16 11:27:32,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:32,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-09-16 11:27:32,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:32,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-09-16 11:27:32,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-09-16 11:27:32,358 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 307 [2022-09-16 11:27:32,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 314 transitions, 969 flow. Second operand has 21 states, 21 states have (on average 209.76190476190476) internal successors, (4405), 21 states have internal predecessors, (4405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:32,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:32,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 307 [2022-09-16 11:27:32,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:34,915 INFO L130 PetriNetUnfolder]: 1742/7728 cut-off events. [2022-09-16 11:27:34,915 INFO L131 PetriNetUnfolder]: For 954/958 co-relation queries the response was YES. [2022-09-16 11:27:34,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12106 conditions, 7728 events. 1742/7728 cut-off events. For 954/958 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 69491 event pairs, 1320 based on Foata normal form. 5/7025 useless extension candidates. Maximal degree in co-relation 12078. Up to 2638 conditions per place. [2022-09-16 11:27:34,968 INFO L137 encePairwiseOnDemand]: 287/307 looper letters, 94 selfloop transitions, 41 changer transitions 0/337 dead transitions. [2022-09-16 11:27:34,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 337 transitions, 1309 flow [2022-09-16 11:27:34,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:27:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 11:27:34,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4680 transitions. [2022-09-16 11:27:34,973 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6929227124666865 [2022-09-16 11:27:34,973 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4680 transitions. [2022-09-16 11:27:34,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4680 transitions. [2022-09-16 11:27:34,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:34,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4680 transitions. [2022-09-16 11:27:34,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 212.72727272727272) internal successors, (4680), 22 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,985 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,985 INFO L175 Difference]: Start difference. First operand has 339 places, 314 transitions, 969 flow. Second operand 22 states and 4680 transitions. [2022-09-16 11:27:34,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 337 transitions, 1309 flow [2022-09-16 11:27:34,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 337 transitions, 1282 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-09-16 11:27:34,995 INFO L231 Difference]: Finished difference. Result has 352 places, 317 transitions, 1065 flow [2022-09-16 11:27:34,995 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1065, PETRI_PLACES=352, PETRI_TRANSITIONS=317} [2022-09-16 11:27:34,996 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 68 predicate places. [2022-09-16 11:27:34,996 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 317 transitions, 1065 flow [2022-09-16 11:27:34,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 209.76190476190476) internal successors, (4405), 21 states have internal predecessors, (4405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:34,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:34,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:27:34,997 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:34,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:34,997 INFO L85 PathProgramCache]: Analyzing trace with hash -758201516, now seen corresponding path program 2 times [2022-09-16 11:27:34,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:34,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433240079] [2022-09-16 11:27:34,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:34,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:35,513 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 11:27:35,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:35,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433240079] [2022-09-16 11:27:35,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433240079] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:35,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:35,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-16 11:27:35,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859072683] [2022-09-16 11:27:35,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:35,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:27:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:27:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:27:35,517 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 307 [2022-09-16 11:27:35,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 317 transitions, 1065 flow. Second operand has 18 states, 18 states have (on average 210.22222222222223) internal successors, (3784), 18 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:35,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:35,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 307 [2022-09-16 11:27:35,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:37,294 INFO L130 PetriNetUnfolder]: 1586/7541 cut-off events. [2022-09-16 11:27:37,294 INFO L131 PetriNetUnfolder]: For 1054/1057 co-relation queries the response was YES. [2022-09-16 11:27:37,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11801 conditions, 7541 events. 1586/7541 cut-off events. For 1054/1057 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 69460 event pairs, 773 based on Foata normal form. 3/6864 useless extension candidates. Maximal degree in co-relation 11771. Up to 2412 conditions per place. [2022-09-16 11:27:37,349 INFO L137 encePairwiseOnDemand]: 291/307 looper letters, 96 selfloop transitions, 26 changer transitions 0/324 dead transitions. [2022-09-16 11:27:37,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 324 transitions, 1326 flow [2022-09-16 11:27:37,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 11:27:37,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-16 11:27:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2997 transitions. [2022-09-16 11:27:37,352 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6973010702652397 [2022-09-16 11:27:37,352 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2997 transitions. [2022-09-16 11:27:37,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2997 transitions. [2022-09-16 11:27:37,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:37,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2997 transitions. [2022-09-16 11:27:37,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 214.07142857142858) internal successors, (2997), 14 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:37,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 307.0) internal successors, (4605), 15 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:37,361 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 307.0) internal successors, (4605), 15 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:37,361 INFO L175 Difference]: Start difference. First operand has 352 places, 317 transitions, 1065 flow. Second operand 14 states and 2997 transitions. [2022-09-16 11:27:37,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 324 transitions, 1326 flow [2022-09-16 11:27:37,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 324 transitions, 1253 flow, removed 5 selfloop flow, removed 22 redundant places. [2022-09-16 11:27:37,373 INFO L231 Difference]: Finished difference. Result has 341 places, 314 transitions, 1031 flow [2022-09-16 11:27:37,374 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1031, PETRI_PLACES=341, PETRI_TRANSITIONS=314} [2022-09-16 11:27:37,374 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 57 predicate places. [2022-09-16 11:27:37,374 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 314 transitions, 1031 flow [2022-09-16 11:27:37,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 210.22222222222223) internal successors, (3784), 18 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:37,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:37,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:37,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:27:37,375 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:37,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:37,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1802980663, now seen corresponding path program 1 times [2022-09-16 11:27:37,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:37,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811619730] [2022-09-16 11:27:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:37,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:38,319 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 11:27:38,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:38,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811619730] [2022-09-16 11:27:38,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811619730] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:38,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:38,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-09-16 11:27:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295747406] [2022-09-16 11:27:38,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:38,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-09-16 11:27:38,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:38,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-09-16 11:27:38,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-09-16 11:27:38,325 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 307 [2022-09-16 11:27:38,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 314 transitions, 1031 flow. Second operand has 31 states, 31 states have (on average 197.0) internal successors, (6107), 31 states have internal predecessors, (6107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:38,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:38,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 307 [2022-09-16 11:27:38,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:41,982 INFO L130 PetriNetUnfolder]: 2611/10620 cut-off events. [2022-09-16 11:27:41,982 INFO L131 PetriNetUnfolder]: For 1503/1507 co-relation queries the response was YES. [2022-09-16 11:27:42,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17140 conditions, 10620 events. 2611/10620 cut-off events. For 1503/1507 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 102881 event pairs, 1940 based on Foata normal form. 2/9580 useless extension candidates. Maximal degree in co-relation 17117. Up to 3895 conditions per place. [2022-09-16 11:27:42,043 INFO L137 encePairwiseOnDemand]: 268/307 looper letters, 129 selfloop transitions, 68 changer transitions 0/382 dead transitions. [2022-09-16 11:27:42,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 382 transitions, 1704 flow [2022-09-16 11:27:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-09-16 11:27:42,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-09-16 11:27:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7406 transitions. [2022-09-16 11:27:42,049 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6519940135575315 [2022-09-16 11:27:42,049 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7406 transitions. [2022-09-16 11:27:42,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7406 transitions. [2022-09-16 11:27:42,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:42,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7406 transitions. [2022-09-16 11:27:42,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 200.16216216216216) internal successors, (7406), 37 states have internal predecessors, (7406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:42,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:42,070 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:42,070 INFO L175 Difference]: Start difference. First operand has 341 places, 314 transitions, 1031 flow. Second operand 37 states and 7406 transitions. [2022-09-16 11:27:42,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 382 transitions, 1704 flow [2022-09-16 11:27:42,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 382 transitions, 1652 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-09-16 11:27:42,083 INFO L231 Difference]: Finished difference. Result has 379 places, 348 transitions, 1434 flow [2022-09-16 11:27:42,083 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1434, PETRI_PLACES=379, PETRI_TRANSITIONS=348} [2022-09-16 11:27:42,083 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 95 predicate places. [2022-09-16 11:27:42,083 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 348 transitions, 1434 flow [2022-09-16 11:27:42,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 197.0) internal successors, (6107), 31 states have internal predecessors, (6107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:42,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:42,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:42,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:27:42,085 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:42,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash -57824887, now seen corresponding path program 1 times [2022-09-16 11:27:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:42,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967150763] [2022-09-16 11:27:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:42,517 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 11:27:42,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:42,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967150763] [2022-09-16 11:27:42,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967150763] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:42,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:42,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:27:42,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67434444] [2022-09-16 11:27:42,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:42,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:27:42,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:42,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:27:42,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:27:42,522 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 307 [2022-09-16 11:27:42,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 348 transitions, 1434 flow. Second operand has 23 states, 23 states have (on average 210.65217391304347) internal successors, (4845), 23 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:42,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:42,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 307 [2022-09-16 11:27:42,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:48,494 INFO L130 PetriNetUnfolder]: 6052/20250 cut-off events. [2022-09-16 11:27:48,494 INFO L131 PetriNetUnfolder]: For 3318/3318 co-relation queries the response was YES. [2022-09-16 11:27:48,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35987 conditions, 20250 events. 6052/20250 cut-off events. For 3318/3318 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 206921 event pairs, 1082 based on Foata normal form. 124/18913 useless extension candidates. Maximal degree in co-relation 35949. Up to 2985 conditions per place. [2022-09-16 11:27:48,837 INFO L137 encePairwiseOnDemand]: 276/307 looper letters, 400 selfloop transitions, 141 changer transitions 0/741 dead transitions. [2022-09-16 11:27:48,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 741 transitions, 3615 flow [2022-09-16 11:27:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-16 11:27:48,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-09-16 11:27:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8806 transitions. [2022-09-16 11:27:48,845 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.717100977198697 [2022-09-16 11:27:48,846 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8806 transitions. [2022-09-16 11:27:48,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8806 transitions. [2022-09-16 11:27:48,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:48,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8806 transitions. [2022-09-16 11:27:48,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 220.15) internal successors, (8806), 40 states have internal predecessors, (8806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:48,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 307.0) internal successors, (12587), 41 states have internal predecessors, (12587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:48,870 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 307.0) internal successors, (12587), 41 states have internal predecessors, (12587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:48,870 INFO L175 Difference]: Start difference. First operand has 379 places, 348 transitions, 1434 flow. Second operand 40 states and 8806 transitions. [2022-09-16 11:27:48,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 741 transitions, 3615 flow [2022-09-16 11:27:48,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 741 transitions, 3348 flow, removed 88 selfloop flow, removed 19 redundant places. [2022-09-16 11:27:48,914 INFO L231 Difference]: Finished difference. Result has 410 places, 449 transitions, 2033 flow [2022-09-16 11:27:48,915 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2033, PETRI_PLACES=410, PETRI_TRANSITIONS=449} [2022-09-16 11:27:48,915 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 126 predicate places. [2022-09-16 11:27:48,915 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 449 transitions, 2033 flow [2022-09-16 11:27:48,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 210.65217391304347) internal successors, (4845), 23 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:48,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:48,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:48,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:27:48,917 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:48,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:48,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1906575339, now seen corresponding path program 1 times [2022-09-16 11:27:48,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:48,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544282152] [2022-09-16 11:27:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:48,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:50,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544282152] [2022-09-16 11:27:50,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544282152] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:50,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:50,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-09-16 11:27:50,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501704821] [2022-09-16 11:27:50,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:50,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-09-16 11:27:50,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:50,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-09-16 11:27:50,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-09-16 11:27:50,218 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 307 [2022-09-16 11:27:50,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 449 transitions, 2033 flow. Second operand has 34 states, 34 states have (on average 186.11764705882354) internal successors, (6328), 34 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:50,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:50,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 307 [2022-09-16 11:27:50,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:57,368 INFO L130 PetriNetUnfolder]: 7531/24133 cut-off events. [2022-09-16 11:27:57,368 INFO L131 PetriNetUnfolder]: For 9227/9454 co-relation queries the response was YES. [2022-09-16 11:27:57,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47580 conditions, 24133 events. 7531/24133 cut-off events. For 9227/9454 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 255726 event pairs, 3232 based on Foata normal form. 24/22074 useless extension candidates. Maximal degree in co-relation 47533. Up to 11359 conditions per place. [2022-09-16 11:27:57,737 INFO L137 encePairwiseOnDemand]: 269/307 looper letters, 260 selfloop transitions, 87 changer transitions 0/535 dead transitions. [2022-09-16 11:27:57,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 535 transitions, 3046 flow [2022-09-16 11:27:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-09-16 11:27:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-09-16 11:27:57,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7017 transitions. [2022-09-16 11:27:57,745 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.61774804120081 [2022-09-16 11:27:57,745 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7017 transitions. [2022-09-16 11:27:57,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7017 transitions. [2022-09-16 11:27:57,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:57,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7017 transitions. [2022-09-16 11:27:57,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 189.64864864864865) internal successors, (7017), 37 states have internal predecessors, (7017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:57,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:57,764 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:57,764 INFO L175 Difference]: Start difference. First operand has 410 places, 449 transitions, 2033 flow. Second operand 37 states and 7017 transitions. [2022-09-16 11:27:57,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 535 transitions, 3046 flow [2022-09-16 11:27:57,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 535 transitions, 2956 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-09-16 11:27:57,853 INFO L231 Difference]: Finished difference. Result has 450 places, 467 transitions, 2345 flow [2022-09-16 11:27:57,853 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2345, PETRI_PLACES=450, PETRI_TRANSITIONS=467} [2022-09-16 11:27:57,854 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 166 predicate places. [2022-09-16 11:27:57,854 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 467 transitions, 2345 flow [2022-09-16 11:27:57,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 186.11764705882354) internal successors, (6328), 34 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:57,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:57,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:57,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:27:57,856 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:57,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1604781333, now seen corresponding path program 1 times [2022-09-16 11:27:57,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:57,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662639321] [2022-09-16 11:27:57,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:57,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:58,324 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 11:27:58,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:58,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662639321] [2022-09-16 11:27:58,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662639321] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:58,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:58,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:27:58,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35013516] [2022-09-16 11:27:58,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:58,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:27:58,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:58,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:27:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:27:58,328 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 307 [2022-09-16 11:27:58,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 467 transitions, 2345 flow. Second operand has 23 states, 23 states have (on average 208.69565217391303) internal successors, (4800), 23 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:58,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:58,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 307 [2022-09-16 11:27:58,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:05,410 INFO L130 PetriNetUnfolder]: 7714/25476 cut-off events. [2022-09-16 11:28:05,410 INFO L131 PetriNetUnfolder]: For 12756/13034 co-relation queries the response was YES. [2022-09-16 11:28:05,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51130 conditions, 25476 events. 7714/25476 cut-off events. For 12756/13034 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 271092 event pairs, 1303 based on Foata normal form. 183/23642 useless extension candidates. Maximal degree in co-relation 51072. Up to 2909 conditions per place. [2022-09-16 11:28:05,944 INFO L137 encePairwiseOnDemand]: 278/307 looper letters, 412 selfloop transitions, 183 changer transitions 0/795 dead transitions. [2022-09-16 11:28:05,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 795 transitions, 4562 flow [2022-09-16 11:28:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 11:28:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-09-16 11:28:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 8473 transitions. [2022-09-16 11:28:05,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7076756034410757 [2022-09-16 11:28:05,951 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 8473 transitions. [2022-09-16 11:28:05,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 8473 transitions. [2022-09-16 11:28:05,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:05,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 8473 transitions. [2022-09-16 11:28:05,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 217.25641025641025) internal successors, (8473), 39 states have internal predecessors, (8473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:05,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 307.0) internal successors, (12280), 40 states have internal predecessors, (12280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:05,976 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 307.0) internal successors, (12280), 40 states have internal predecessors, (12280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:05,977 INFO L175 Difference]: Start difference. First operand has 450 places, 467 transitions, 2345 flow. Second operand 39 states and 8473 transitions. [2022-09-16 11:28:05,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 795 transitions, 4562 flow [2022-09-16 11:28:06,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 795 transitions, 4401 flow, removed 26 selfloop flow, removed 26 redundant places. [2022-09-16 11:28:06,077 INFO L231 Difference]: Finished difference. Result has 471 places, 533 transitions, 3133 flow [2022-09-16 11:28:06,077 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3133, PETRI_PLACES=471, PETRI_TRANSITIONS=533} [2022-09-16 11:28:06,077 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 187 predicate places. [2022-09-16 11:28:06,078 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 533 transitions, 3133 flow [2022-09-16 11:28:06,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 208.69565217391303) internal successors, (4800), 23 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:06,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:06,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:06,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:28:06,078 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:28:06,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:06,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1831608018, now seen corresponding path program 1 times [2022-09-16 11:28:06,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:06,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804760429] [2022-09-16 11:28:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:06,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:06,640 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 11:28:06,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:06,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804760429] [2022-09-16 11:28:06,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804760429] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:06,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:06,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-16 11:28:06,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038536774] [2022-09-16 11:28:06,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:06,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-16 11:28:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:06,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-16 11:28:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:28:06,644 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 307 [2022-09-16 11:28:06,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 533 transitions, 3133 flow. Second operand has 27 states, 27 states have (on average 211.22222222222223) internal successors, (5703), 27 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:06,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:06,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 307 [2022-09-16 11:28:06,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:14,807 INFO L130 PetriNetUnfolder]: 8112/28579 cut-off events. [2022-09-16 11:28:14,807 INFO L131 PetriNetUnfolder]: For 20220/20730 co-relation queries the response was YES. [2022-09-16 11:28:15,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58836 conditions, 28579 events. 8112/28579 cut-off events. For 20220/20730 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 317569 event pairs, 4698 based on Foata normal form. 76/26120 useless extension candidates. Maximal degree in co-relation 58770. Up to 10231 conditions per place. [2022-09-16 11:28:15,369 INFO L137 encePairwiseOnDemand]: 273/307 looper letters, 325 selfloop transitions, 114 changer transitions 0/714 dead transitions. [2022-09-16 11:28:15,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 714 transitions, 4825 flow [2022-09-16 11:28:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-09-16 11:28:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-09-16 11:28:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7779 transitions. [2022-09-16 11:28:15,376 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7038545059717698 [2022-09-16 11:28:15,376 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7779 transitions. [2022-09-16 11:28:15,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7779 transitions. [2022-09-16 11:28:15,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:15,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7779 transitions. [2022-09-16 11:28:15,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 216.08333333333334) internal successors, (7779), 36 states have internal predecessors, (7779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:15,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 307.0) internal successors, (11359), 37 states have internal predecessors, (11359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:15,397 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 307.0) internal successors, (11359), 37 states have internal predecessors, (11359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:15,397 INFO L175 Difference]: Start difference. First operand has 471 places, 533 transitions, 3133 flow. Second operand 36 states and 7779 transitions. [2022-09-16 11:28:15,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 714 transitions, 4825 flow [2022-09-16 11:28:15,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 714 transitions, 4740 flow, removed 23 selfloop flow, removed 9 redundant places. [2022-09-16 11:28:15,638 INFO L231 Difference]: Finished difference. Result has 509 places, 590 transitions, 3921 flow [2022-09-16 11:28:15,639 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3921, PETRI_PLACES=509, PETRI_TRANSITIONS=590} [2022-09-16 11:28:15,640 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 225 predicate places. [2022-09-16 11:28:15,640 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 590 transitions, 3921 flow [2022-09-16 11:28:15,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 211.22222222222223) internal successors, (5703), 27 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:15,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:15,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:15,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:28:15,641 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:28:15,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:15,642 INFO L85 PathProgramCache]: Analyzing trace with hash 945274546, now seen corresponding path program 1 times [2022-09-16 11:28:15,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:15,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624621274] [2022-09-16 11:28:15,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:15,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:16,184 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 11:28:16,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:16,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624621274] [2022-09-16 11:28:16,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624621274] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:16,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:16,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-09-16 11:28:16,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17021598] [2022-09-16 11:28:16,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:16,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-16 11:28:16,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:16,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-16 11:28:16,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:28:16,188 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 307 [2022-09-16 11:28:16,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 590 transitions, 3921 flow. Second operand has 22 states, 22 states have (on average 210.9090909090909) internal successors, (4640), 22 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:16,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:16,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 307 [2022-09-16 11:28:16,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:28,920 INFO L130 PetriNetUnfolder]: 12913/41358 cut-off events. [2022-09-16 11:28:28,921 INFO L131 PetriNetUnfolder]: For 35060/35446 co-relation queries the response was YES. [2022-09-16 11:28:29,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92976 conditions, 41358 events. 12913/41358 cut-off events. For 35060/35446 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 475669 event pairs, 2012 based on Foata normal form. 448/39337 useless extension candidates. Maximal degree in co-relation 92899. Up to 5161 conditions per place. [2022-09-16 11:28:30,086 INFO L137 encePairwiseOnDemand]: 272/307 looper letters, 488 selfloop transitions, 352 changer transitions 0/1088 dead transitions. [2022-09-16 11:28:30,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 1088 transitions, 7914 flow [2022-09-16 11:28:30,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-09-16 11:28:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-09-16 11:28:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 9236 transitions. [2022-09-16 11:28:30,094 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7163021560415698 [2022-09-16 11:28:30,094 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 9236 transitions. [2022-09-16 11:28:30,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 9236 transitions. [2022-09-16 11:28:30,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:30,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 9236 transitions. [2022-09-16 11:28:30,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 219.9047619047619) internal successors, (9236), 42 states have internal predecessors, (9236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:30,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 307.0) internal successors, (13201), 43 states have internal predecessors, (13201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:30,121 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 307.0) internal successors, (13201), 43 states have internal predecessors, (13201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:30,121 INFO L175 Difference]: Start difference. First operand has 509 places, 590 transitions, 3921 flow. Second operand 42 states and 9236 transitions. [2022-09-16 11:28:30,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 1088 transitions, 7914 flow [2022-09-16 11:28:30,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 1088 transitions, 7748 flow, removed 15 selfloop flow, removed 23 redundant places. [2022-09-16 11:28:30,569 INFO L231 Difference]: Finished difference. Result has 547 places, 784 transitions, 6606 flow [2022-09-16 11:28:30,570 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=3761, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=6606, PETRI_PLACES=547, PETRI_TRANSITIONS=784} [2022-09-16 11:28:30,570 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 263 predicate places. [2022-09-16 11:28:30,570 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 784 transitions, 6606 flow [2022-09-16 11:28:30,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 210.9090909090909) internal successors, (4640), 22 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:30,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:30,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:30,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:28:30,571 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:28:30,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:30,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1397896478, now seen corresponding path program 1 times [2022-09-16 11:28:30,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:30,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562031382] [2022-09-16 11:28:30,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:30,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:31,589 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 11:28:31,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:31,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562031382] [2022-09-16 11:28:31,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562031382] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:31,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:31,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-09-16 11:28:31,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579037306] [2022-09-16 11:28:31,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:31,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-16 11:28:31,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:31,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-16 11:28:31,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2022-09-16 11:28:31,593 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 307 [2022-09-16 11:28:31,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 784 transitions, 6606 flow. Second operand has 29 states, 29 states have (on average 200.41379310344828) internal successors, (5812), 29 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:31,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:31,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 307 [2022-09-16 11:28:31,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:51,305 INFO L130 PetriNetUnfolder]: 17081/56852 cut-off events. [2022-09-16 11:28:51,305 INFO L131 PetriNetUnfolder]: For 91718/93566 co-relation queries the response was YES. [2022-09-16 11:28:53,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144584 conditions, 56852 events. 17081/56852 cut-off events. For 91718/93566 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 708475 event pairs, 4466 based on Foata normal form. 488/53548 useless extension candidates. Maximal degree in co-relation 144490. Up to 16297 conditions per place. [2022-09-16 11:28:53,192 INFO L137 encePairwiseOnDemand]: 269/307 looper letters, 561 selfloop transitions, 278 changer transitions 0/1127 dead transitions. [2022-09-16 11:28:53,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 1127 transitions, 10968 flow [2022-09-16 11:28:53,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-09-16 11:28:53,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-09-16 11:28:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7611 transitions. [2022-09-16 11:28:53,196 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6700413768817678 [2022-09-16 11:28:53,196 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7611 transitions. [2022-09-16 11:28:53,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7611 transitions. [2022-09-16 11:28:53,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:53,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7611 transitions. [2022-09-16 11:28:53,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 205.7027027027027) internal successors, (7611), 37 states have internal predecessors, (7611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:53,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:53,213 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:53,214 INFO L175 Difference]: Start difference. First operand has 547 places, 784 transitions, 6606 flow. Second operand 37 states and 7611 transitions. [2022-09-16 11:28:53,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 1127 transitions, 10968 flow [2022-09-16 11:28:54,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 1127 transitions, 10726 flow, removed 114 selfloop flow, removed 7 redundant places. [2022-09-16 11:28:54,788 INFO L231 Difference]: Finished difference. Result has 588 places, 942 transitions, 9444 flow [2022-09-16 11:28:54,789 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=6478, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9444, PETRI_PLACES=588, PETRI_TRANSITIONS=942} [2022-09-16 11:28:54,789 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 304 predicate places. [2022-09-16 11:28:54,789 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 942 transitions, 9444 flow [2022-09-16 11:28:54,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 200.41379310344828) internal successors, (5812), 29 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:54,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:54,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:54,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:28:54,791 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:28:54,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:54,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1148103738, now seen corresponding path program 2 times [2022-09-16 11:28:54,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:54,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039774161] [2022-09-16 11:28:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:54,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:55,761 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 11:28:55,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:55,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039774161] [2022-09-16 11:28:55,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039774161] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:55,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:55,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-09-16 11:28:55,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123016519] [2022-09-16 11:28:55,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:55,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-09-16 11:28:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:55,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-09-16 11:28:55,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2022-09-16 11:28:55,766 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 307 [2022-09-16 11:28:55,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 942 transitions, 9444 flow. Second operand has 34 states, 34 states have (on average 201.02941176470588) internal successors, (6835), 34 states have internal predecessors, (6835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:55,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:55,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 307 [2022-09-16 11:28:55,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand