/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:58:59,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:58:59,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:58:59,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:58:59,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:58:59,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:58:59,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:58:59,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:58:59,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:58:59,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:58:59,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:58:59,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:58:59,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:58:59,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:58:59,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:58:59,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:58:59,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:58:59,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:58:59,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:58:59,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:58:59,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:58:59,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:58:59,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:58:59,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:58:59,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:58:59,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:58:59,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:58:59,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:58:59,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:58:59,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-09-16 11:58:59,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:58:59,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:58:59,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:58:59,086 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 11:58:59,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:58:59,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:58:59,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:58:59,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:58:59,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:58:59,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:58:59,107 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:58:59,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:58:59,108 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:58:59,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:58:59,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:58:59,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:58:59,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:58:59,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:58:59,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:58:59,109 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:58:59,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:58:59,109 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:58:59,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:58:59,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:58:59,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:58:59,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:58:59,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:58:59,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:58:59,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:58:59,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:58:59,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:58:59,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:58:59,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:58:59,111 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:58:59,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:58:59,111 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:58:59,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:58:59,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:58:59,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:58:59,374 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:58:59,375 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:58:59,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2022-09-16 11:58:59,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d705011a/892b23fe9048411386c7ebf4bb09c92a/FLAG0ef2d7e1c [2022-09-16 11:58:59,880 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:58:59,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2022-09-16 11:58:59,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d705011a/892b23fe9048411386c7ebf4bb09c92a/FLAG0ef2d7e1c [2022-09-16 11:58:59,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d705011a/892b23fe9048411386c7ebf4bb09c92a [2022-09-16 11:58:59,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:58:59,909 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:58:59,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:58:59,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:58:59,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:58:59,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d43124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59, skipping insertion in model container [2022-09-16 11:58:59,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:58:59,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:59:00,142 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-09-16 11:59:00,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:59:00,159 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:59:00,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-09-16 11:59:00,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:59:00,217 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:59:00,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:00 WrapperNode [2022-09-16 11:59:00,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:59:00,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:59:00,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:59:00,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:59:00,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:00" (1/1) ... [2022-09-16 11:59:00,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:00" (1/1) ... [2022-09-16 11:59:00,278 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 303 [2022-09-16 11:59:00,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:59:00,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:59:00,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:59:00,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:59:00,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:00" (1/1) ... [2022-09-16 11:59:00,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:00" (1/1) ... [2022-09-16 11:59:00,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:00" (1/1) ... [2022-09-16 11:59:00,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:00" (1/1) ... [2022-09-16 11:59:00,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:00" (1/1) ... [2022-09-16 11:59:00,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:00" (1/1) ... [2022-09-16 11:59:00,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:00" (1/1) ... [2022-09-16 11:59:00,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:59:00,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:59:00,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:59:00,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:59:00,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:00" (1/1) ... [2022-09-16 11:59:00,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:59:00,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:00,368 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 11:59:00,390 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 11:59:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:59:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:59:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:59:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:59:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:59:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:59:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:59:00,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:59:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:59:00,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:59:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:59:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:59:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:59:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:59:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:59:00,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:59:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:59:00,412 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 11:59:00,516 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:59:00,517 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:59:00,965 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:59:01,605 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:59:01,605 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:59:01,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:59:01 BoogieIcfgContainer [2022-09-16 11:59:01,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:59:01,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:59:01,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:59:01,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:59:01,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:58:59" (1/3) ... [2022-09-16 11:59:01,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377c980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:59:01, skipping insertion in model container [2022-09-16 11:59:01,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:00" (2/3) ... [2022-09-16 11:59:01,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377c980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:59:01, skipping insertion in model container [2022-09-16 11:59:01,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:59:01" (3/3) ... [2022-09-16 11:59:01,617 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2022-09-16 11:59:01,633 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:59:01,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-09-16 11:59:01,633 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:59:01,899 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:59:01,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 321 transitions, 666 flow [2022-09-16 11:59:02,091 INFO L130 PetriNetUnfolder]: 23/318 cut-off events. [2022-09-16 11:59:02,092 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:59:02,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 23/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 794 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2022-09-16 11:59:02,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 321 transitions, 666 flow [2022-09-16 11:59:02,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 294 transitions, 606 flow [2022-09-16 11:59:02,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:59:02,120 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;@22a1708, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:59:02,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-09-16 11:59:02,128 INFO L130 PetriNetUnfolder]: 3/65 cut-off events. [2022-09-16 11:59:02,128 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:59:02,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:02,129 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] [2022-09-16 11:59:02,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-09-16 11:59:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash 519815807, now seen corresponding path program 1 times [2022-09-16 11:59:02,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:02,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67803444] [2022-09-16 11:59:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:02,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:02,389 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 11:59:02,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:02,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67803444] [2022-09-16 11:59:02,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67803444] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:02,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:02,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:02,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60158726] [2022-09-16 11:59:02,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:02,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:02,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:02,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:02,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:02,432 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-09-16 11:59:02,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 294 transitions, 606 flow. Second operand has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:02,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-09-16 11:59:02,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:02,846 INFO L130 PetriNetUnfolder]: 77/627 cut-off events. [2022-09-16 11:59:02,847 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-09-16 11:59:02,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 627 events. 77/627 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3088 event pairs, 28 based on Foata normal form. 90/547 useless extension candidates. Maximal degree in co-relation 451. Up to 69 conditions per place. [2022-09-16 11:59:02,867 INFO L137 encePairwiseOnDemand]: 296/321 looper letters, 42 selfloop transitions, 4 changer transitions 3/296 dead transitions. [2022-09-16 11:59:02,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 296 transitions, 720 flow [2022-09-16 11:59:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:59:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:59:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1459 transitions. [2022-09-16 11:59:02,887 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9090342679127725 [2022-09-16 11:59:02,888 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1459 transitions. [2022-09-16 11:59:02,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1459 transitions. [2022-09-16 11:59:02,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:02,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1459 transitions. [2022-09-16 11:59:02,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.8) internal successors, (1459), 5 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,908 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,910 INFO L175 Difference]: Start difference. First operand has 283 places, 294 transitions, 606 flow. Second operand 5 states and 1459 transitions. [2022-09-16 11:59:02,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 296 transitions, 720 flow [2022-09-16 11:59:02,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 296 transitions, 696 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:59:02,924 INFO L231 Difference]: Finished difference. Result has 276 places, 275 transitions, 580 flow [2022-09-16 11:59:02,926 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=580, PETRI_PLACES=276, PETRI_TRANSITIONS=275} [2022-09-16 11:59:02,929 INFO L287 CegarLoopForPetriNet]: 283 programPoint places, -7 predicate places. [2022-09-16 11:59:02,929 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 275 transitions, 580 flow [2022-09-16 11:59:02,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:02,930 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:02,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:59:02,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-09-16 11:59:02,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1358057142, now seen corresponding path program 1 times [2022-09-16 11:59:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:02,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022430445] [2022-09-16 11:59:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:02,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:03,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:03,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022430445] [2022-09-16 11:59:03,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022430445] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:03,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597641879] [2022-09-16 11:59:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:03,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:03,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:03,044 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 11:59:03,046 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 11:59:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:03,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:03,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:03,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:03,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597641879] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:03,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:03,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:59:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846701910] [2022-09-16 11:59:03,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:03,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:59:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:03,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:59:03,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:59:03,386 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-09-16 11:59:03,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 275 transitions, 580 flow. Second operand has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:03,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-09-16 11:59:03,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:04,070 INFO L130 PetriNetUnfolder]: 191/1483 cut-off events. [2022-09-16 11:59:04,070 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2022-09-16 11:59:04,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 1483 events. 191/1483 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10257 event pairs, 70 based on Foata normal form. 3/1076 useless extension candidates. Maximal degree in co-relation 1436. Up to 64 conditions per place. [2022-09-16 11:59:04,095 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 93 selfloop transitions, 18 changer transitions 0/358 dead transitions. [2022-09-16 11:59:04,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 358 transitions, 1014 flow [2022-09-16 11:59:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:59:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:59:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5064 transitions. [2022-09-16 11:59:04,105 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8764278296988577 [2022-09-16 11:59:04,105 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5064 transitions. [2022-09-16 11:59:04,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5064 transitions. [2022-09-16 11:59:04,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:04,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5064 transitions. [2022-09-16 11:59:04,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 281.3333333333333) internal successors, (5064), 18 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,132 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,132 INFO L175 Difference]: Start difference. First operand has 276 places, 275 transitions, 580 flow. Second operand 18 states and 5064 transitions. [2022-09-16 11:59:04,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 358 transitions, 1014 flow [2022-09-16 11:59:04,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 358 transitions, 1012 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:04,142 INFO L231 Difference]: Finished difference. Result has 293 places, 287 transitions, 684 flow [2022-09-16 11:59:04,142 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=684, PETRI_PLACES=293, PETRI_TRANSITIONS=287} [2022-09-16 11:59:04,144 INFO L287 CegarLoopForPetriNet]: 283 programPoint places, 10 predicate places. [2022-09-16 11:59:04,144 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 287 transitions, 684 flow [2022-09-16 11:59:04,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:04,147 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] [2022-09-16 11:59:04,175 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 11:59:04,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:04,364 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-09-16 11:59:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash 849902484, now seen corresponding path program 1 times [2022-09-16 11:59:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:04,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300855995] [2022-09-16 11:59:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:04,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:04,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300855995] [2022-09-16 11:59:04,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300855995] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:04,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942037846] [2022-09-16 11:59:04,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:04,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:04,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:04,438 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 11:59:04,440 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 11:59:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:04,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:04,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:04,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:04,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942037846] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:04,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:04,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:59:04,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366870480] [2022-09-16 11:59:04,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:04,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:04,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:59:04,726 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-09-16 11:59:04,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 287 transitions, 684 flow. Second operand has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:04,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-09-16 11:59:04,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:05,174 INFO L130 PetriNetUnfolder]: 191/1479 cut-off events. [2022-09-16 11:59:05,174 INFO L131 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2022-09-16 11:59:05,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1479 events. 191/1479 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10142 event pairs, 70 based on Foata normal form. 4/1073 useless extension candidates. Maximal degree in co-relation 1481. Up to 240 conditions per place. [2022-09-16 11:59:05,204 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 43 selfloop transitions, 11 changer transitions 0/301 dead transitions. [2022-09-16 11:59:05,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 301 transitions, 809 flow [2022-09-16 11:59:05,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1971 transitions. [2022-09-16 11:59:05,211 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.87716955941255 [2022-09-16 11:59:05,211 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1971 transitions. [2022-09-16 11:59:05,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1971 transitions. [2022-09-16 11:59:05,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:05,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1971 transitions. [2022-09-16 11:59:05,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.57142857142856) internal successors, (1971), 7 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,220 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,221 INFO L175 Difference]: Start difference. First operand has 293 places, 287 transitions, 684 flow. Second operand 7 states and 1971 transitions. [2022-09-16 11:59:05,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 301 transitions, 809 flow [2022-09-16 11:59:05,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 301 transitions, 777 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:05,228 INFO L231 Difference]: Finished difference. Result has 289 places, 283 transitions, 647 flow [2022-09-16 11:59:05,228 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=647, PETRI_PLACES=289, PETRI_TRANSITIONS=283} [2022-09-16 11:59:05,230 INFO L287 CegarLoopForPetriNet]: 283 programPoint places, 6 predicate places. [2022-09-16 11:59:05,231 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 283 transitions, 647 flow [2022-09-16 11:59:05,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:05,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:05,259 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 11:59:05,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:59:05,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-09-16 11:59:05,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1121272946, now seen corresponding path program 1 times [2022-09-16 11:59:05,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:05,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87236918] [2022-09-16 11:59:05,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:05,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:05,534 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 11:59:05,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:05,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87236918] [2022-09-16 11:59:05,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87236918] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:05,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:05,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:59:05,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98603567] [2022-09-16 11:59:05,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:05,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:59:05,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:05,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:59:05,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:59:05,538 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 321 [2022-09-16 11:59:05,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 283 transitions, 647 flow. Second operand has 7 states, 7 states have (on average 265.14285714285717) internal successors, (1856), 7 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:05,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 321 [2022-09-16 11:59:05,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:06,415 INFO L130 PetriNetUnfolder]: 609/3471 cut-off events. [2022-09-16 11:59:06,416 INFO L131 PetriNetUnfolder]: For 149/161 co-relation queries the response was YES. [2022-09-16 11:59:06,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 3471 events. 609/3471 cut-off events. For 149/161 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 29020 event pairs, 409 based on Foata normal form. 0/2370 useless extension candidates. Maximal degree in co-relation 4096. Up to 949 conditions per place. [2022-09-16 11:59:06,484 INFO L137 encePairwiseOnDemand]: 312/321 looper letters, 69 selfloop transitions, 8 changer transitions 0/315 dead transitions. [2022-09-16 11:59:06,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 315 transitions, 873 flow [2022-09-16 11:59:06,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:59:06,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:59:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2176 transitions. [2022-09-16 11:59:06,490 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8473520249221184 [2022-09-16 11:59:06,490 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2176 transitions. [2022-09-16 11:59:06,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2176 transitions. [2022-09-16 11:59:06,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:06,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2176 transitions. [2022-09-16 11:59:06,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,499 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,499 INFO L175 Difference]: Start difference. First operand has 289 places, 283 transitions, 647 flow. Second operand 8 states and 2176 transitions. [2022-09-16 11:59:06,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 315 transitions, 873 flow [2022-09-16 11:59:06,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 315 transitions, 859 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:06,506 INFO L231 Difference]: Finished difference. Result has 294 places, 285 transitions, 665 flow [2022-09-16 11:59:06,506 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=665, PETRI_PLACES=294, PETRI_TRANSITIONS=285} [2022-09-16 11:59:06,507 INFO L287 CegarLoopForPetriNet]: 283 programPoint places, 11 predicate places. [2022-09-16 11:59:06,507 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 285 transitions, 665 flow [2022-09-16 11:59:06,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 265.14285714285717) internal successors, (1856), 7 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:06,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:06,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:59:06,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-09-16 11:59:06,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash 456301930, now seen corresponding path program 1 times [2022-09-16 11:59:06,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:06,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020442432] [2022-09-16 11:59:06,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:06,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:06,577 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 11:59:06,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:06,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020442432] [2022-09-16 11:59:06,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020442432] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:06,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:06,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:59:06,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913583027] [2022-09-16 11:59:06,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:06,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:59:06,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:06,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:59:06,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:59:06,580 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-09-16 11:59:06,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 285 transitions, 665 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:06,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-09-16 11:59:06,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:06,985 INFO L130 PetriNetUnfolder]: 167/1510 cut-off events. [2022-09-16 11:59:06,985 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2022-09-16 11:59:07,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 1510 events. 167/1510 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 11277 event pairs, 30 based on Foata normal form. 0/1120 useless extension candidates. Maximal degree in co-relation 1537. Up to 216 conditions per place. [2022-09-16 11:59:07,015 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 21 selfloop transitions, 3 changer transitions 0/294 dead transitions. [2022-09-16 11:59:07,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 294 transitions, 734 flow [2022-09-16 11:59:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:59:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:59:07,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 875 transitions. [2022-09-16 11:59:07,018 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9086188992731049 [2022-09-16 11:59:07,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 875 transitions. [2022-09-16 11:59:07,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 875 transitions. [2022-09-16 11:59:07,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:07,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 875 transitions. [2022-09-16 11:59:07,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.6666666666667) internal successors, (875), 3 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,023 INFO L175 Difference]: Start difference. First operand has 294 places, 285 transitions, 665 flow. Second operand 3 states and 875 transitions. [2022-09-16 11:59:07,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 294 transitions, 734 flow [2022-09-16 11:59:07,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 294 transitions, 724 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:59:07,030 INFO L231 Difference]: Finished difference. Result has 293 places, 287 transitions, 676 flow [2022-09-16 11:59:07,030 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=676, PETRI_PLACES=293, PETRI_TRANSITIONS=287} [2022-09-16 11:59:07,031 INFO L287 CegarLoopForPetriNet]: 283 programPoint places, 10 predicate places. [2022-09-16 11:59:07,031 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 287 transitions, 676 flow [2022-09-16 11:59:07,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:07,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:07,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:59:07,032 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-09-16 11:59:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:07,033 INFO L85 PathProgramCache]: Analyzing trace with hash 456301938, now seen corresponding path program 1 times [2022-09-16 11:59:07,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:07,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740712326] [2022-09-16 11:59:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:07,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:07,181 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 11:59:07,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:07,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740712326] [2022-09-16 11:59:07,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740712326] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:07,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:07,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:07,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616119585] [2022-09-16 11:59:07,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:07,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:07,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:07,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:07,185 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-09-16 11:59:07,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 287 transitions, 676 flow. Second operand has 4 states, 4 states have (on average 274.5) internal successors, (1098), 4 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:07,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-09-16 11:59:07,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:07,525 INFO L130 PetriNetUnfolder]: 142/1500 cut-off events. [2022-09-16 11:59:07,525 INFO L131 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2022-09-16 11:59:07,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2027 conditions, 1500 events. 142/1500 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11211 event pairs, 80 based on Foata normal form. 0/1210 useless extension candidates. Maximal degree in co-relation 1620. Up to 236 conditions per place. [2022-09-16 11:59:07,548 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 34 selfloop transitions, 3 changer transitions 0/299 dead transitions. [2022-09-16 11:59:07,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 299 transitions, 774 flow [2022-09-16 11:59:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:59:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:59:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1131 transitions. [2022-09-16 11:59:07,551 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8808411214953271 [2022-09-16 11:59:07,551 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1131 transitions. [2022-09-16 11:59:07,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1131 transitions. [2022-09-16 11:59:07,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:07,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1131 transitions. [2022-09-16 11:59:07,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 282.75) internal successors, (1131), 4 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,557 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,557 INFO L175 Difference]: Start difference. First operand has 293 places, 287 transitions, 676 flow. Second operand 4 states and 1131 transitions. [2022-09-16 11:59:07,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 299 transitions, 774 flow [2022-09-16 11:59:07,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 299 transitions, 772 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:07,563 INFO L231 Difference]: Finished difference. Result has 296 places, 286 transitions, 679 flow [2022-09-16 11:59:07,563 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=296, PETRI_TRANSITIONS=286} [2022-09-16 11:59:07,564 INFO L287 CegarLoopForPetriNet]: 283 programPoint places, 13 predicate places. [2022-09-16 11:59:07,564 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 286 transitions, 679 flow [2022-09-16 11:59:07,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 274.5) internal successors, (1098), 4 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:07,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:07,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:59:07,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-09-16 11:59:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:07,570 INFO L85 PathProgramCache]: Analyzing trace with hash 456301928, now seen corresponding path program 1 times [2022-09-16 11:59:07,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:07,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23598436] [2022-09-16 11:59:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:07,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:07,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:07,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23598436] [2022-09-16 11:59:07,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23598436] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:07,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:07,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-16 11:59:07,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687197774] [2022-09-16 11:59:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:07,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:59:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:59:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:59:07,766 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 321 [2022-09-16 11:59:07,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 286 transitions, 679 flow. Second operand has 9 states, 9 states have (on average 247.11111111111111) internal successors, (2224), 9 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:07,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 321 [2022-09-16 11:59:07,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:08,988 INFO L130 PetriNetUnfolder]: 2389/6780 cut-off events. [2022-09-16 11:59:08,989 INFO L131 PetriNetUnfolder]: For 813/813 co-relation queries the response was YES. [2022-09-16 11:59:09,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11007 conditions, 6780 events. 2389/6780 cut-off events. For 813/813 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 56812 event pairs, 1088 based on Foata normal form. 1/4453 useless extension candidates. Maximal degree in co-relation 10884. Up to 2879 conditions per place. [2022-09-16 11:59:09,063 INFO L137 encePairwiseOnDemand]: 310/321 looper letters, 58 selfloop transitions, 7 changer transitions 4/296 dead transitions. [2022-09-16 11:59:09,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 296 transitions, 837 flow [2022-09-16 11:59:09,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:59:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:59:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2259 transitions. [2022-09-16 11:59:09,069 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7819314641744548 [2022-09-16 11:59:09,069 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2259 transitions. [2022-09-16 11:59:09,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2259 transitions. [2022-09-16 11:59:09,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:09,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2259 transitions. [2022-09-16 11:59:09,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 251.0) internal successors, (2259), 9 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 321.0) internal successors, (3210), 10 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,078 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 321.0) internal successors, (3210), 10 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,079 INFO L175 Difference]: Start difference. First operand has 296 places, 286 transitions, 679 flow. Second operand 9 states and 2259 transitions. [2022-09-16 11:59:09,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 296 transitions, 837 flow [2022-09-16 11:59:09,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 296 transitions, 824 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:09,085 INFO L231 Difference]: Finished difference. Result has 301 places, 284 transitions, 679 flow [2022-09-16 11:59:09,086 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=679, PETRI_PLACES=301, PETRI_TRANSITIONS=284} [2022-09-16 11:59:09,086 INFO L287 CegarLoopForPetriNet]: 283 programPoint places, 18 predicate places. [2022-09-16 11:59:09,086 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 284 transitions, 679 flow [2022-09-16 11:59:09,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 247.11111111111111) internal successors, (2224), 9 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:09,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:09,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:59:09,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-09-16 11:59:09,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:09,088 INFO L85 PathProgramCache]: Analyzing trace with hash -235587331, now seen corresponding path program 1 times [2022-09-16 11:59:09,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:09,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273275692] [2022-09-16 11:59:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:09,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:09,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:09,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273275692] [2022-09-16 11:59:09,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273275692] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:09,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198515578] [2022-09-16 11:59:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:09,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:09,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:09,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:09,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:59:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:09,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 29 conjunts are in the unsatisfiable core [2022-09-16 11:59:09,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:09,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 11:59:09,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:59:09,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:59:09,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 11:59:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:09,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:10,114 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_137 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_137) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:59:10,174 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_137 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_137) |c_ULTIMATE.start_main_#t~ret20#1.base|) |c_ULTIMATE.start_main_#t~ret20#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:59:10,182 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_137 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_137) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:59:10,186 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_137 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_137) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:59:10,241 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:10,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-09-16 11:59:10,264 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:10,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-09-16 11:59:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:59:10,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198515578] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:10,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:10,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 40 [2022-09-16 11:59:10,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601723747] [2022-09-16 11:59:10,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:10,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-09-16 11:59:10,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:10,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-09-16 11:59:10,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1213, Unknown=4, NotChecked=292, Total=1640 [2022-09-16 11:59:10,521 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 321 [2022-09-16 11:59:10,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 284 transitions, 679 flow. Second operand has 41 states, 41 states have (on average 226.0731707317073) internal successors, (9269), 41 states have internal predecessors, (9269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:10,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 321 [2022-09-16 11:59:10,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:31,420 INFO L130 PetriNetUnfolder]: 45199/100511 cut-off events. [2022-09-16 11:59:31,420 INFO L131 PetriNetUnfolder]: For 5211/6811 co-relation queries the response was YES. [2022-09-16 11:59:32,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175403 conditions, 100511 events. 45199/100511 cut-off events. For 5211/6811 co-relation queries the response was YES. Maximal size of possible extension queue 4625. Compared 1261421 event pairs, 11593 based on Foata normal form. 0/72444 useless extension candidates. Maximal degree in co-relation 175291. Up to 20628 conditions per place. [2022-09-16 11:59:33,091 INFO L137 encePairwiseOnDemand]: 296/321 looper letters, 308 selfloop transitions, 46 changer transitions 0/555 dead transitions. [2022-09-16 11:59:33,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 555 transitions, 2031 flow [2022-09-16 11:59:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-09-16 11:59:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-09-16 11:59:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 6839 transitions. [2022-09-16 11:59:33,105 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.734665377591578 [2022-09-16 11:59:33,105 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 6839 transitions. [2022-09-16 11:59:33,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 6839 transitions. [2022-09-16 11:59:33,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:33,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 6839 transitions. [2022-09-16 11:59:33,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 235.82758620689654) internal successors, (6839), 29 states have internal predecessors, (6839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:33,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 321.0) internal successors, (9630), 30 states have internal predecessors, (9630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:33,137 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 321.0) internal successors, (9630), 30 states have internal predecessors, (9630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:33,137 INFO L175 Difference]: Start difference. First operand has 301 places, 284 transitions, 679 flow. Second operand 29 states and 6839 transitions. [2022-09-16 11:59:33,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 555 transitions, 2031 flow [2022-09-16 11:59:33,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 555 transitions, 2008 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-09-16 11:59:33,167 INFO L231 Difference]: Finished difference. Result has 339 places, 327 transitions, 981 flow [2022-09-16 11:59:33,172 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=981, PETRI_PLACES=339, PETRI_TRANSITIONS=327} [2022-09-16 11:59:33,175 INFO L287 CegarLoopForPetriNet]: 283 programPoint places, 56 predicate places. [2022-09-16 11:59:33,176 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 327 transitions, 981 flow [2022-09-16 11:59:33,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 226.0731707317073) internal successors, (9269), 41 states have internal predecessors, (9269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:33,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:33,179 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] [2022-09-16 11:59:33,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:33,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:33,396 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-09-16 11:59:33,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:33,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1286728441, now seen corresponding path program 1 times [2022-09-16 11:59:33,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:33,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033286694] [2022-09-16 11:59:33,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:33,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:33,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:33,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033286694] [2022-09-16 11:59:33,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033286694] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:33,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:33,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:33,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892220822] [2022-09-16 11:59:33,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:33,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:33,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:33,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:33,451 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 321 [2022-09-16 11:59:33,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 327 transitions, 981 flow. Second operand has 4 states, 4 states have (on average 265.75) internal successors, (1063), 4 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:33,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:33,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 321 [2022-09-16 11:59:33,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:36,661 INFO L130 PetriNetUnfolder]: 2898/15886 cut-off events. [2022-09-16 11:59:36,661 INFO L131 PetriNetUnfolder]: For 4081/4082 co-relation queries the response was YES. [2022-09-16 11:59:36,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25647 conditions, 15886 events. 2898/15886 cut-off events. For 4081/4082 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 201823 event pairs, 1086 based on Foata normal form. 130/12419 useless extension candidates. Maximal degree in co-relation 25532. Up to 2789 conditions per place. [2022-09-16 11:59:37,104 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 73 selfloop transitions, 8 changer transitions 0/356 dead transitions. [2022-09-16 11:59:37,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 356 transitions, 1222 flow [2022-09-16 11:59:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:59:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:59:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1124 transitions. [2022-09-16 11:59:37,111 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8753894080996885 [2022-09-16 11:59:37,111 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1124 transitions. [2022-09-16 11:59:37,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1124 transitions. [2022-09-16 11:59:37,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:37,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1124 transitions. [2022-09-16 11:59:37,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 11:59:37,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:37,122 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:37,122 INFO L175 Difference]: Start difference. First operand has 339 places, 327 transitions, 981 flow. Second operand 4 states and 1124 transitions. [2022-09-16 11:59:37,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 356 transitions, 1222 flow [2022-09-16 11:59:37,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 356 transitions, 1213 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:37,151 INFO L231 Difference]: Finished difference. Result has 339 places, 326 transitions, 1002 flow [2022-09-16 11:59:37,152 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1002, PETRI_PLACES=339, PETRI_TRANSITIONS=326} [2022-09-16 11:59:37,153 INFO L287 CegarLoopForPetriNet]: 283 programPoint places, 56 predicate places. [2022-09-16 11:59:37,153 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 326 transitions, 1002 flow [2022-09-16 11:59:37,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.75) internal successors, (1063), 4 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:37,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:37,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:37,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:59:37,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-09-16 11:59:37,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:37,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1830987526, now seen corresponding path program 1 times [2022-09-16 11:59:37,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:37,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690725282] [2022-09-16 11:59:37,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:37,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:38,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:38,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690725282] [2022-09-16 11:59:38,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690725282] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:38,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099653138] [2022-09-16 11:59:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:38,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:38,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:38,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:38,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:59:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:38,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 50 conjunts are in the unsatisfiable core [2022-09-16 11:59:38,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:38,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:59:38,372 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-09-16 11:59:38,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-09-16 11:59:38,409 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-09-16 11:59:38,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 22 [2022-09-16 11:59:38,650 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-09-16 11:59:38,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 25 [2022-09-16 11:59:38,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:59:39,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:59:40,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:59:40,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:59:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:40,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:40,517 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_189 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_189) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))) 9223372039002259456))) (not (< c_~M~0 c_~N~0))) is different from false [2022-09-16 11:59:40,540 WARN L833 $PredicateComparison]: unable to prove that (or (not (< c_~M~0 c_~N~0)) (forall ((v_ArrVal_188 (Array Int Int)) (v_ArrVal_189 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_188) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_189) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))) 9223372039002259456)))) is different from false [2022-09-16 11:59:40,569 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_188 (Array Int Int)) (v_ArrVal_187 (Array Int Int)) (v_ArrVal_189 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_187) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_188) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_189) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))) 9223372039002259456))) (not (< c_~M~0 c_~N~0))) is different from false [2022-09-16 11:59:41,370 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:41,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-09-16 11:59:41,381 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:41,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 342 treesize of output 330 [2022-09-16 11:59:41,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 266 [2022-09-16 11:59:41,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 121 [2022-09-16 11:59:41,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 254 treesize of output 230 [2022-09-16 11:59:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:42,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099653138] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:42,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:42,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 74 [2022-09-16 11:59:42,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903125537] [2022-09-16 11:59:42,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:42,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-09-16 11:59:42,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:42,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-09-16 11:59:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=4781, Unknown=60, NotChecked=426, Total=5550 [2022-09-16 11:59:42,675 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 321 [2022-09-16 11:59:42,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 326 transitions, 1002 flow. Second operand has 75 states, 75 states have (on average 205.05333333333334) internal successors, (15379), 75 states have internal predecessors, (15379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:42,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:42,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 321 [2022-09-16 11:59:42,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand