/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/parallel-misc-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:50:15,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:50:15,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:50:15,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:50:15,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:50:15,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:50:15,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:50:15,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:50:15,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:50:15,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:50:15,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:50:15,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:50:15,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:50:15,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:50:15,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:50:15,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:50:15,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:50:15,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:50:15,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:50:15,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:50:15,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:50:15,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:50:15,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:50:15,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:50:15,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:50:15,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:50:15,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:50:15,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:50:15,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:50:15,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:50:15,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:50:15,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:50:15,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:50:15,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:50:15,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:50:15,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:50:15,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:50:15,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:50:15,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:50:15,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:50:15,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:50:15,451 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 11:50:15,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:50:15,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:50:15,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:50:15,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:50:15,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:50:15,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:50:15,476 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:50:15,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:50:15,476 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:50:15,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:50:15,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:50:15,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:50:15,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:50:15,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:50:15,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:50:15,478 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:50:15,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:50:15,478 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:50:15,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:50:15,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:50:15,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:50:15,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:50:15,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:50:15,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:50:15,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:50:15,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:50:15,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:50:15,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:50:15,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:50:15,480 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:50:15,480 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:50:15,480 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:50:15,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:50:15,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:50:15,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:50:15,725 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:50:15,726 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:50:15,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2022-09-16 11:50:15,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34f845ab/d5177c99c6214502bc05670299743a72/FLAGe021fc5c0 [2022-09-16 11:50:16,195 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:50:16,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2022-09-16 11:50:16,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34f845ab/d5177c99c6214502bc05670299743a72/FLAGe021fc5c0 [2022-09-16 11:50:16,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34f845ab/d5177c99c6214502bc05670299743a72 [2022-09-16 11:50:16,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:50:16,219 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:50:16,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:50:16,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:50:16,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:50:16,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:50:16" (1/1) ... [2022-09-16 11:50:16,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e7c833f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16, skipping insertion in model container [2022-09-16 11:50:16,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:50:16" (1/1) ... [2022-09-16 11:50:16,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:50:16,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:50:16,451 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/parallel-misc-5.wvr.c[3027,3040] [2022-09-16 11:50:16,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:50:16,462 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:50:16,486 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/parallel-misc-5.wvr.c[3027,3040] [2022-09-16 11:50:16,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:50:16,497 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:50:16,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16 WrapperNode [2022-09-16 11:50:16,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:50:16,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:50:16,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:50:16,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:50:16,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16" (1/1) ... [2022-09-16 11:50:16,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16" (1/1) ... [2022-09-16 11:50:16,540 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 159 [2022-09-16 11:50:16,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:50:16,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:50:16,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:50:16,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:50:16,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16" (1/1) ... [2022-09-16 11:50:16,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16" (1/1) ... [2022-09-16 11:50:16,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16" (1/1) ... [2022-09-16 11:50:16,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16" (1/1) ... [2022-09-16 11:50:16,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16" (1/1) ... [2022-09-16 11:50:16,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16" (1/1) ... [2022-09-16 11:50:16,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16" (1/1) ... [2022-09-16 11:50:16,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:50:16,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:50:16,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:50:16,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:50:16,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16" (1/1) ... [2022-09-16 11:50:16,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:50:16,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:16,611 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 11:50:16,613 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 11:50:16,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:50:16,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:50:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:50:16,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:50:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:50:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:50:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:50:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:50:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:50:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:50:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:50:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:50:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:50:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:50:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:50:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:50:16,648 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 11:50:16,714 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:50:16,715 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:50:16,931 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:50:17,044 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:50:17,045 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 11:50:17,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:50:17 BoogieIcfgContainer [2022-09-16 11:50:17,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:50:17,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:50:17,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:50:17,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:50:17,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:50:16" (1/3) ... [2022-09-16 11:50:17,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa59a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:50:17, skipping insertion in model container [2022-09-16 11:50:17,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:16" (2/3) ... [2022-09-16 11:50:17,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa59a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:50:17, skipping insertion in model container [2022-09-16 11:50:17,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:50:17" (3/3) ... [2022-09-16 11:50:17,062 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2022-09-16 11:50:17,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:50:17,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-09-16 11:50:17,075 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:50:17,158 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:50:17,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 124 transitions, 272 flow [2022-09-16 11:50:17,272 INFO L130 PetriNetUnfolder]: 7/121 cut-off events. [2022-09-16 11:50:17,272 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:50:17,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 7/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 169 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2022-09-16 11:50:17,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 124 transitions, 272 flow [2022-09-16 11:50:17,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 105 transitions, 222 flow [2022-09-16 11:50:17,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:50:17,301 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;@691a55ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:50:17,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-09-16 11:50:17,324 INFO L130 PetriNetUnfolder]: 3/57 cut-off events. [2022-09-16 11:50:17,324 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:50:17,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:17,325 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] [2022-09-16 11:50:17,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:17,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:17,329 INFO L85 PathProgramCache]: Analyzing trace with hash 274155913, now seen corresponding path program 1 times [2022-09-16 11:50:17,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:17,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122490002] [2022-09-16 11:50:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:17,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:17,579 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 11:50:17,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:17,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122490002] [2022-09-16 11:50:17,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122490002] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:17,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:17,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:50:17,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203077391] [2022-09-16 11:50:17,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:17,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:50:17,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:17,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:50:17,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:50:17,616 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-09-16 11:50:17,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:17,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:17,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-09-16 11:50:17,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:18,020 INFO L130 PetriNetUnfolder]: 1242/2392 cut-off events. [2022-09-16 11:50:18,021 INFO L131 PetriNetUnfolder]: For 295/295 co-relation queries the response was YES. [2022-09-16 11:50:18,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4362 conditions, 2392 events. 1242/2392 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 16081 event pairs, 295 based on Foata normal form. 163/1436 useless extension candidates. Maximal degree in co-relation 3925. Up to 970 conditions per place. [2022-09-16 11:50:18,041 INFO L137 encePairwiseOnDemand]: 102/124 looper letters, 34 selfloop transitions, 13 changer transitions 1/118 dead transitions. [2022-09-16 11:50:18,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 118 transitions, 353 flow [2022-09-16 11:50:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:50:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:50:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2022-09-16 11:50:18,056 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7919354838709678 [2022-09-16 11:50:18,057 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2022-09-16 11:50:18,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2022-09-16 11:50:18,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:18,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2022-09-16 11:50:18,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,072 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 222 flow. Second operand 5 states and 491 transitions. [2022-09-16 11:50:18,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 118 transitions, 353 flow [2022-09-16 11:50:18,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 118 transitions, 343 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:50:18,083 INFO L231 Difference]: Finished difference. Result has 108 places, 107 transitions, 292 flow [2022-09-16 11:50:18,084 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=108, PETRI_TRANSITIONS=107} [2022-09-16 11:50:18,087 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 0 predicate places. [2022-09-16 11:50:18,087 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 107 transitions, 292 flow [2022-09-16 11:50:18,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:18,088 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] [2022-09-16 11:50:18,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:50:18,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:18,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:18,090 INFO L85 PathProgramCache]: Analyzing trace with hash 274154915, now seen corresponding path program 1 times [2022-09-16 11:50:18,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:18,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145535372] [2022-09-16 11:50:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:18,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:18,152 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 11:50:18,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:18,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145535372] [2022-09-16 11:50:18,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145535372] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:18,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:18,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:50:18,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596295993] [2022-09-16 11:50:18,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:18,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:50:18,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:18,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:50:18,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:50:18,155 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-09-16 11:50:18,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 107 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:18,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-09-16 11:50:18,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:18,462 INFO L130 PetriNetUnfolder]: 1606/3070 cut-off events. [2022-09-16 11:50:18,465 INFO L131 PetriNetUnfolder]: For 1371/1371 co-relation queries the response was YES. [2022-09-16 11:50:18,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6861 conditions, 3070 events. 1606/3070 cut-off events. For 1371/1371 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20754 event pairs, 245 based on Foata normal form. 126/2252 useless extension candidates. Maximal degree in co-relation 6635. Up to 1562 conditions per place. [2022-09-16 11:50:18,488 INFO L137 encePairwiseOnDemand]: 105/124 looper letters, 44 selfloop transitions, 15 changer transitions 0/129 dead transitions. [2022-09-16 11:50:18,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 129 transitions, 491 flow [2022-09-16 11:50:18,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:50:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:50:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 481 transitions. [2022-09-16 11:50:18,490 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7758064516129032 [2022-09-16 11:50:18,490 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 481 transitions. [2022-09-16 11:50:18,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 481 transitions. [2022-09-16 11:50:18,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:18,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 481 transitions. [2022-09-16 11:50:18,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,493 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,493 INFO L175 Difference]: Start difference. First operand has 108 places, 107 transitions, 292 flow. Second operand 5 states and 481 transitions. [2022-09-16 11:50:18,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 129 transitions, 491 flow [2022-09-16 11:50:18,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 129 transitions, 487 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:18,498 INFO L231 Difference]: Finished difference. Result has 111 places, 117 transitions, 408 flow [2022-09-16 11:50:18,498 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=111, PETRI_TRANSITIONS=117} [2022-09-16 11:50:18,499 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 3 predicate places. [2022-09-16 11:50:18,499 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 117 transitions, 408 flow [2022-09-16 11:50:18,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:18,500 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] [2022-09-16 11:50:18,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:50:18,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:18,501 INFO L85 PathProgramCache]: Analyzing trace with hash 274155914, now seen corresponding path program 1 times [2022-09-16 11:50:18,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:18,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15712883] [2022-09-16 11:50:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:18,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:18,538 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 11:50:18,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:18,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15712883] [2022-09-16 11:50:18,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15712883] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:18,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:18,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:18,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18790915] [2022-09-16 11:50:18,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:18,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:18,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:18,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:18,541 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-09-16 11:50:18,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 117 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:18,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-09-16 11:50:18,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:18,679 INFO L130 PetriNetUnfolder]: 877/1696 cut-off events. [2022-09-16 11:50:18,680 INFO L131 PetriNetUnfolder]: For 1447/1447 co-relation queries the response was YES. [2022-09-16 11:50:18,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4935 conditions, 1696 events. 877/1696 cut-off events. For 1447/1447 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10102 event pairs, 188 based on Foata normal form. 0/1245 useless extension candidates. Maximal degree in co-relation 4695. Up to 1170 conditions per place. [2022-09-16 11:50:18,694 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 41 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2022-09-16 11:50:18,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 115 transitions, 486 flow [2022-09-16 11:50:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2022-09-16 11:50:18,695 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7661290322580645 [2022-09-16 11:50:18,695 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2022-09-16 11:50:18,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2022-09-16 11:50:18,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:18,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2022-09-16 11:50:18,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,697 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,697 INFO L175 Difference]: Start difference. First operand has 111 places, 117 transitions, 408 flow. Second operand 4 states and 380 transitions. [2022-09-16 11:50:18,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 115 transitions, 486 flow [2022-09-16 11:50:18,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 115 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:18,701 INFO L231 Difference]: Finished difference. Result has 111 places, 115 transitions, 400 flow [2022-09-16 11:50:18,701 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=400, PETRI_PLACES=111, PETRI_TRANSITIONS=115} [2022-09-16 11:50:18,702 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 3 predicate places. [2022-09-16 11:50:18,702 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 400 flow [2022-09-16 11:50:18,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:18,702 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] [2022-09-16 11:50:18,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:50:18,702 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:18,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:18,703 INFO L85 PathProgramCache]: Analyzing trace with hash 274154917, now seen corresponding path program 1 times [2022-09-16 11:50:18,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:18,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774125349] [2022-09-16 11:50:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:18,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:18,747 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 11:50:18,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:18,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774125349] [2022-09-16 11:50:18,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774125349] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:18,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:18,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:50:18,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013791404] [2022-09-16 11:50:18,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:18,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:50:18,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:18,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:50:18,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:50:18,750 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2022-09-16 11:50:18,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:18,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:18,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2022-09-16 11:50:18,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:19,041 INFO L130 PetriNetUnfolder]: 1634/3152 cut-off events. [2022-09-16 11:50:19,041 INFO L131 PetriNetUnfolder]: For 3009/3009 co-relation queries the response was YES. [2022-09-16 11:50:19,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8889 conditions, 3152 events. 1634/3152 cut-off events. For 3009/3009 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 21832 event pairs, 225 based on Foata normal form. 29/2396 useless extension candidates. Maximal degree in co-relation 8842. Up to 1205 conditions per place. [2022-09-16 11:50:19,066 INFO L137 encePairwiseOnDemand]: 116/124 looper letters, 71 selfloop transitions, 9 changer transitions 0/148 dead transitions. [2022-09-16 11:50:19,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 148 transitions, 747 flow [2022-09-16 11:50:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:50:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:50:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2022-09-16 11:50:19,068 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7580645161290323 [2022-09-16 11:50:19,068 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2022-09-16 11:50:19,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2022-09-16 11:50:19,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:19,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2022-09-16 11:50:19,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:19,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:19,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:19,071 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 400 flow. Second operand 5 states and 470 transitions. [2022-09-16 11:50:19,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 148 transitions, 747 flow [2022-09-16 11:50:19,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 148 transitions, 741 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:19,075 INFO L231 Difference]: Finished difference. Result has 114 places, 121 transitions, 476 flow [2022-09-16 11:50:19,075 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=114, PETRI_TRANSITIONS=121} [2022-09-16 11:50:19,075 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 6 predicate places. [2022-09-16 11:50:19,075 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 121 transitions, 476 flow [2022-09-16 11:50:19,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:19,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:19,076 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] [2022-09-16 11:50:19,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:50:19,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:19,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:19,077 INFO L85 PathProgramCache]: Analyzing trace with hash 274154918, now seen corresponding path program 1 times [2022-09-16 11:50:19,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:19,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553311736] [2022-09-16 11:50:19,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:19,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:19,113 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 11:50:19,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:19,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553311736] [2022-09-16 11:50:19,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553311736] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:19,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:19,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:19,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495092975] [2022-09-16 11:50:19,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:19,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:19,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:19,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:19,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:19,115 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-09-16 11:50:19,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 121 transitions, 476 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:19,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:19,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-09-16 11:50:19,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:19,279 INFO L130 PetriNetUnfolder]: 838/1766 cut-off events. [2022-09-16 11:50:19,280 INFO L131 PetriNetUnfolder]: For 2307/2307 co-relation queries the response was YES. [2022-09-16 11:50:19,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5340 conditions, 1766 events. 838/1766 cut-off events. For 2307/2307 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11586 event pairs, 212 based on Foata normal form. 98/1560 useless extension candidates. Maximal degree in co-relation 5153. Up to 1169 conditions per place. [2022-09-16 11:50:19,293 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 43 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2022-09-16 11:50:19,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 117 transitions, 536 flow [2022-09-16 11:50:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2022-09-16 11:50:19,295 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7641129032258065 [2022-09-16 11:50:19,295 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2022-09-16 11:50:19,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2022-09-16 11:50:19,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:19,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2022-09-16 11:50:19,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:19,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:19,298 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:19,298 INFO L175 Difference]: Start difference. First operand has 114 places, 121 transitions, 476 flow. Second operand 4 states and 379 transitions. [2022-09-16 11:50:19,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 117 transitions, 536 flow [2022-09-16 11:50:19,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 117 transitions, 522 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:50:19,302 INFO L231 Difference]: Finished difference. Result has 112 places, 117 transitions, 436 flow [2022-09-16 11:50:19,302 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=436, PETRI_PLACES=112, PETRI_TRANSITIONS=117} [2022-09-16 11:50:19,304 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 4 predicate places. [2022-09-16 11:50:19,304 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 117 transitions, 436 flow [2022-09-16 11:50:19,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:19,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:19,305 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:50:19,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:50:19,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:19,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:19,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2115945332, now seen corresponding path program 1 times [2022-09-16 11:50:19,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:19,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348676608] [2022-09-16 11:50:19,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:19,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:19,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:19,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348676608] [2022-09-16 11:50:19,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348676608] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:19,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151847036] [2022-09-16 11:50:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:19,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:19,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:19,355 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 11:50:19,356 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 11:50:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:19,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:50:19,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:19,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:19,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151847036] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:19,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:19,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-09-16 11:50:19,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470940832] [2022-09-16 11:50:19,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:19,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:50:19,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:19,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:50:19,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-09-16 11:50:19,541 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-09-16 11:50:19,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 117 transitions, 436 flow. Second operand has 13 states, 13 states have (on average 87.6923076923077) internal successors, (1140), 13 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:19,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:19,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-09-16 11:50:19,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:20,267 INFO L130 PetriNetUnfolder]: 3237/7020 cut-off events. [2022-09-16 11:50:20,267 INFO L131 PetriNetUnfolder]: For 10808/10808 co-relation queries the response was YES. [2022-09-16 11:50:20,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18533 conditions, 7020 events. 3237/7020 cut-off events. For 10808/10808 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 57953 event pairs, 71 based on Foata normal form. 788/6528 useless extension candidates. Maximal degree in co-relation 18487. Up to 1691 conditions per place. [2022-09-16 11:50:20,322 INFO L137 encePairwiseOnDemand]: 103/124 looper letters, 70 selfloop transitions, 69 changer transitions 0/209 dead transitions. [2022-09-16 11:50:20,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 209 transitions, 1227 flow [2022-09-16 11:50:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:50:20,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:50:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 978 transitions. [2022-09-16 11:50:20,325 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7887096774193548 [2022-09-16 11:50:20,325 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 978 transitions. [2022-09-16 11:50:20,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 978 transitions. [2022-09-16 11:50:20,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:20,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 978 transitions. [2022-09-16 11:50:20,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 97.8) internal successors, (978), 10 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:20,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:20,330 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:20,330 INFO L175 Difference]: Start difference. First operand has 112 places, 117 transitions, 436 flow. Second operand 10 states and 978 transitions. [2022-09-16 11:50:20,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 209 transitions, 1227 flow [2022-09-16 11:50:20,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 209 transitions, 1221 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:20,339 INFO L231 Difference]: Finished difference. Result has 122 places, 179 transitions, 1178 flow [2022-09-16 11:50:20,339 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1178, PETRI_PLACES=122, PETRI_TRANSITIONS=179} [2022-09-16 11:50:20,341 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 14 predicate places. [2022-09-16 11:50:20,342 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 179 transitions, 1178 flow [2022-09-16 11:50:20,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 87.6923076923077) internal successors, (1140), 13 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:20,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:20,342 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:50:20,362 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 11:50:20,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-09-16 11:50:20,558 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:20,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:20,558 INFO L85 PathProgramCache]: Analyzing trace with hash 657514440, now seen corresponding path program 1 times [2022-09-16 11:50:20,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:20,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313510035] [2022-09-16 11:50:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:20,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:20,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:20,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313510035] [2022-09-16 11:50:20,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313510035] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:20,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:20,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:50:20,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132590576] [2022-09-16 11:50:20,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:20,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:50:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:20,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:50:20,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:50:20,591 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-09-16 11:50:20,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 179 transitions, 1178 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:20,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:20,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-09-16 11:50:20,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:21,057 INFO L130 PetriNetUnfolder]: 2428/5357 cut-off events. [2022-09-16 11:50:21,057 INFO L131 PetriNetUnfolder]: For 17768/17768 co-relation queries the response was YES. [2022-09-16 11:50:21,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18345 conditions, 5357 events. 2428/5357 cut-off events. For 17768/17768 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 42223 event pairs, 361 based on Foata normal form. 365/4662 useless extension candidates. Maximal degree in co-relation 8251. Up to 3195 conditions per place. [2022-09-16 11:50:21,103 INFO L137 encePairwiseOnDemand]: 113/124 looper letters, 89 selfloop transitions, 9 changer transitions 0/171 dead transitions. [2022-09-16 11:50:21,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 171 transitions, 1261 flow [2022-09-16 11:50:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:50:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:50:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2022-09-16 11:50:21,104 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8198924731182796 [2022-09-16 11:50:21,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2022-09-16 11:50:21,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2022-09-16 11:50:21,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:21,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2022-09-16 11:50:21,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,106 INFO L175 Difference]: Start difference. First operand has 122 places, 179 transitions, 1178 flow. Second operand 3 states and 305 transitions. [2022-09-16 11:50:21,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 171 transitions, 1261 flow [2022-09-16 11:50:21,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 171 transitions, 1225 flow, removed 15 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:21,132 INFO L231 Difference]: Finished difference. Result has 119 places, 167 transitions, 1034 flow [2022-09-16 11:50:21,132 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1034, PETRI_PLACES=119, PETRI_TRANSITIONS=167} [2022-09-16 11:50:21,132 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 11 predicate places. [2022-09-16 11:50:21,133 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 167 transitions, 1034 flow [2022-09-16 11:50:21,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:21,133 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] [2022-09-16 11:50:21,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:50:21,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:21,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:21,134 INFO L85 PathProgramCache]: Analyzing trace with hash 414630081, now seen corresponding path program 1 times [2022-09-16 11:50:21,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:21,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197597487] [2022-09-16 11:50:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:21,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:21,182 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 11:50:21,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:21,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197597487] [2022-09-16 11:50:21,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197597487] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:21,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:21,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:21,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932619539] [2022-09-16 11:50:21,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:21,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:21,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:21,184 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-09-16 11:50:21,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 167 transitions, 1034 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:21,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-09-16 11:50:21,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:21,434 INFO L130 PetriNetUnfolder]: 1233/3072 cut-off events. [2022-09-16 11:50:21,434 INFO L131 PetriNetUnfolder]: For 8123/8123 co-relation queries the response was YES. [2022-09-16 11:50:21,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10139 conditions, 3072 events. 1233/3072 cut-off events. For 8123/8123 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 23152 event pairs, 219 based on Foata normal form. 0/2510 useless extension candidates. Maximal degree in co-relation 9775. Up to 1648 conditions per place. [2022-09-16 11:50:21,465 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 86 selfloop transitions, 3 changer transitions 0/160 dead transitions. [2022-09-16 11:50:21,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 160 transitions, 1160 flow [2022-09-16 11:50:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-09-16 11:50:21,466 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7580645161290323 [2022-09-16 11:50:21,466 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-09-16 11:50:21,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-09-16 11:50:21,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:21,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-09-16 11:50:21,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,468 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,468 INFO L175 Difference]: Start difference. First operand has 119 places, 167 transitions, 1034 flow. Second operand 4 states and 376 transitions. [2022-09-16 11:50:21,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 160 transitions, 1160 flow [2022-09-16 11:50:21,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 160 transitions, 1144 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:21,479 INFO L231 Difference]: Finished difference. Result has 119 places, 160 transitions, 972 flow [2022-09-16 11:50:21,479 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=972, PETRI_PLACES=119, PETRI_TRANSITIONS=160} [2022-09-16 11:50:21,481 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 11 predicate places. [2022-09-16 11:50:21,481 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 160 transitions, 972 flow [2022-09-16 11:50:21,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:21,482 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] [2022-09-16 11:50:21,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:50:21,482 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:21,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:21,482 INFO L85 PathProgramCache]: Analyzing trace with hash 414630080, now seen corresponding path program 1 times [2022-09-16 11:50:21,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:21,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652959998] [2022-09-16 11:50:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:21,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:21,539 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 11:50:21,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:21,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652959998] [2022-09-16 11:50:21,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652959998] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:21,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:21,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:50:21,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023082746] [2022-09-16 11:50:21,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:21,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:50:21,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:21,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:50:21,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:50:21,541 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2022-09-16 11:50:21,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 160 transitions, 972 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:21,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2022-09-16 11:50:21,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:21,960 INFO L130 PetriNetUnfolder]: 2041/4928 cut-off events. [2022-09-16 11:50:21,961 INFO L131 PetriNetUnfolder]: For 16243/16243 co-relation queries the response was YES. [2022-09-16 11:50:21,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16060 conditions, 4928 events. 2041/4928 cut-off events. For 16243/16243 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 41070 event pairs, 543 based on Foata normal form. 69/4172 useless extension candidates. Maximal degree in co-relation 16003. Up to 1892 conditions per place. [2022-09-16 11:50:22,006 INFO L137 encePairwiseOnDemand]: 117/124 looper letters, 121 selfloop transitions, 11 changer transitions 0/200 dead transitions. [2022-09-16 11:50:22,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 200 transitions, 1597 flow [2022-09-16 11:50:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:50:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:50:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2022-09-16 11:50:22,008 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7467741935483871 [2022-09-16 11:50:22,008 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2022-09-16 11:50:22,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2022-09-16 11:50:22,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:22,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2022-09-16 11:50:22,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:22,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:22,010 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:22,010 INFO L175 Difference]: Start difference. First operand has 119 places, 160 transitions, 972 flow. Second operand 5 states and 463 transitions. [2022-09-16 11:50:22,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 200 transitions, 1597 flow [2022-09-16 11:50:22,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 200 transitions, 1591 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:22,077 INFO L231 Difference]: Finished difference. Result has 121 places, 159 transitions, 1017 flow [2022-09-16 11:50:22,078 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1017, PETRI_PLACES=121, PETRI_TRANSITIONS=159} [2022-09-16 11:50:22,078 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 13 predicate places. [2022-09-16 11:50:22,078 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 159 transitions, 1017 flow [2022-09-16 11:50:22,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:22,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:22,079 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:22,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:50:22,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:22,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:22,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1555287595, now seen corresponding path program 1 times [2022-09-16 11:50:22,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:22,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761871786] [2022-09-16 11:50:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:22,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:22,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:22,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761871786] [2022-09-16 11:50:22,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761871786] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:22,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:22,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:22,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386095749] [2022-09-16 11:50:22,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:22,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:22,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:22,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:22,146 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-09-16 11:50:22,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 159 transitions, 1017 flow. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:22,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:22,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-09-16 11:50:22,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:22,811 INFO L130 PetriNetUnfolder]: 2581/7125 cut-off events. [2022-09-16 11:50:22,811 INFO L131 PetriNetUnfolder]: For 25441/25441 co-relation queries the response was YES. [2022-09-16 11:50:22,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21977 conditions, 7125 events. 2581/7125 cut-off events. For 25441/25441 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 67273 event pairs, 64 based on Foata normal form. 168/6470 useless extension candidates. Maximal degree in co-relation 21528. Up to 2114 conditions per place. [2022-09-16 11:50:22,872 INFO L137 encePairwiseOnDemand]: 109/124 looper letters, 54 selfloop transitions, 56 changer transitions 0/183 dead transitions. [2022-09-16 11:50:22,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 183 transitions, 1402 flow [2022-09-16 11:50:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:22,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 406 transitions. [2022-09-16 11:50:22,874 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8185483870967742 [2022-09-16 11:50:22,874 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 406 transitions. [2022-09-16 11:50:22,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 406 transitions. [2022-09-16 11:50:22,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:22,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 406 transitions. [2022-09-16 11:50:22,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:22,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:22,876 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:22,876 INFO L175 Difference]: Start difference. First operand has 121 places, 159 transitions, 1017 flow. Second operand 4 states and 406 transitions. [2022-09-16 11:50:22,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 183 transitions, 1402 flow [2022-09-16 11:50:22,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 183 transitions, 1388 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:22,893 INFO L231 Difference]: Finished difference. Result has 123 places, 175 transitions, 1408 flow [2022-09-16 11:50:22,893 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1408, PETRI_PLACES=123, PETRI_TRANSITIONS=175} [2022-09-16 11:50:22,894 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 15 predicate places. [2022-09-16 11:50:22,894 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 175 transitions, 1408 flow [2022-09-16 11:50:22,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:22,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:22,894 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:22,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:50:22,895 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:22,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:22,895 INFO L85 PathProgramCache]: Analyzing trace with hash -840429689, now seen corresponding path program 1 times [2022-09-16 11:50:22,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:22,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127542172] [2022-09-16 11:50:22,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:22,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:22,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:22,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127542172] [2022-09-16 11:50:22,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127542172] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:22,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405904063] [2022-09-16 11:50:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:22,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:22,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:22,980 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 11:50:22,981 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 11:50:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:23,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:50:23,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:50:23,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:50:23,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405904063] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:23,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:50:23,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-09-16 11:50:23,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623569982] [2022-09-16 11:50:23,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:23,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:50:23,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:23,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:50:23,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:50:23,125 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 124 [2022-09-16 11:50:23,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 175 transitions, 1408 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:23,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:23,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 124 [2022-09-16 11:50:23,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:23,576 INFO L130 PetriNetUnfolder]: 1386/4389 cut-off events. [2022-09-16 11:50:23,576 INFO L131 PetriNetUnfolder]: For 22853/22853 co-relation queries the response was YES. [2022-09-16 11:50:23,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15322 conditions, 4389 events. 1386/4389 cut-off events. For 22853/22853 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 40746 event pairs, 64 based on Foata normal form. 108/3974 useless extension candidates. Maximal degree in co-relation 14831. Up to 1761 conditions per place. [2022-09-16 11:50:23,666 INFO L137 encePairwiseOnDemand]: 113/124 looper letters, 126 selfloop transitions, 15 changer transitions 0/212 dead transitions. [2022-09-16 11:50:23,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 212 transitions, 2127 flow [2022-09-16 11:50:23,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:50:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:50:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 558 transitions. [2022-09-16 11:50:23,681 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-09-16 11:50:23,681 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 558 transitions. [2022-09-16 11:50:23,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 558 transitions. [2022-09-16 11:50:23,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:23,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 558 transitions. [2022-09-16 11:50:23,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:23,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:23,683 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:23,683 INFO L175 Difference]: Start difference. First operand has 123 places, 175 transitions, 1408 flow. Second operand 6 states and 558 transitions. [2022-09-16 11:50:23,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 212 transitions, 2127 flow [2022-09-16 11:50:23,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 212 transitions, 2080 flow, removed 21 selfloop flow, removed 1 redundant places. [2022-09-16 11:50:23,703 INFO L231 Difference]: Finished difference. Result has 128 places, 183 transitions, 1561 flow [2022-09-16 11:50:23,703 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1561, PETRI_PLACES=128, PETRI_TRANSITIONS=183} [2022-09-16 11:50:23,704 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 20 predicate places. [2022-09-16 11:50:23,704 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 183 transitions, 1561 flow [2022-09-16 11:50:23,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:23,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:23,704 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:23,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 11:50:23,920 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,SelfDestructingSolverStorable10 [2022-09-16 11:50:23,921 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:23,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:23,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2015322153, now seen corresponding path program 1 times [2022-09-16 11:50:23,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:23,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250670457] [2022-09-16 11:50:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:23,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:23,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:23,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250670457] [2022-09-16 11:50:23,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250670457] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:23,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:23,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:50:23,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705651650] [2022-09-16 11:50:23,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:23,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:50:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:23,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:50:23,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:50:23,956 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 124 [2022-09-16 11:50:23,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 183 transitions, 1561 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:23,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:23,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 124 [2022-09-16 11:50:23,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:24,406 INFO L130 PetriNetUnfolder]: 1264/4136 cut-off events. [2022-09-16 11:50:24,406 INFO L131 PetriNetUnfolder]: For 20850/20850 co-relation queries the response was YES. [2022-09-16 11:50:24,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14163 conditions, 4136 events. 1264/4136 cut-off events. For 20850/20850 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 38265 event pairs, 72 based on Foata normal form. 67/3717 useless extension candidates. Maximal degree in co-relation 13678. Up to 1587 conditions per place. [2022-09-16 11:50:24,449 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 116 selfloop transitions, 12 changer transitions 0/202 dead transitions. [2022-09-16 11:50:24,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 202 transitions, 2017 flow [2022-09-16 11:50:24,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:50:24,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:50:24,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2022-09-16 11:50:24,450 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8091397849462365 [2022-09-16 11:50:24,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2022-09-16 11:50:24,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2022-09-16 11:50:24,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:24,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2022-09-16 11:50:24,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:24,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:24,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:24,452 INFO L175 Difference]: Start difference. First operand has 128 places, 183 transitions, 1561 flow. Second operand 3 states and 301 transitions. [2022-09-16 11:50:24,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 202 transitions, 2017 flow [2022-09-16 11:50:24,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 202 transitions, 1998 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:50:24,469 INFO L231 Difference]: Finished difference. Result has 125 places, 173 transitions, 1414 flow [2022-09-16 11:50:24,469 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1414, PETRI_PLACES=125, PETRI_TRANSITIONS=173} [2022-09-16 11:50:24,470 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 17 predicate places. [2022-09-16 11:50:24,470 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 173 transitions, 1414 flow [2022-09-16 11:50:24,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:24,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:24,470 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:24,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:50:24,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:24,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:24,471 INFO L85 PathProgramCache]: Analyzing trace with hash 266084713, now seen corresponding path program 1 times [2022-09-16 11:50:24,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:24,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97094913] [2022-09-16 11:50:24,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:24,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:24,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:24,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97094913] [2022-09-16 11:50:24,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97094913] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:24,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:24,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:50:24,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144973565] [2022-09-16 11:50:24,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:24,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:50:24,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:24,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:50:24,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:50:24,508 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 124 [2022-09-16 11:50:24,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 173 transitions, 1414 flow. Second operand has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:24,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:24,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 124 [2022-09-16 11:50:24,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:25,448 INFO L130 PetriNetUnfolder]: 3190/9442 cut-off events. [2022-09-16 11:50:25,448 INFO L131 PetriNetUnfolder]: For 51759/51759 co-relation queries the response was YES. [2022-09-16 11:50:25,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32327 conditions, 9442 events. 3190/9442 cut-off events. For 51759/51759 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 95207 event pairs, 223 based on Foata normal form. 74/8317 useless extension candidates. Maximal degree in co-relation 31702. Up to 2379 conditions per place. [2022-09-16 11:50:25,565 INFO L137 encePairwiseOnDemand]: 108/124 looper letters, 51 selfloop transitions, 100 changer transitions 0/221 dead transitions. [2022-09-16 11:50:25,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 221 transitions, 2253 flow [2022-09-16 11:50:25,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:50:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:50:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 662 transitions. [2022-09-16 11:50:25,567 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7626728110599078 [2022-09-16 11:50:25,567 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 662 transitions. [2022-09-16 11:50:25,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 662 transitions. [2022-09-16 11:50:25,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:25,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 662 transitions. [2022-09-16 11:50:25,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.57142857142857) internal successors, (662), 7 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,570 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,570 INFO L175 Difference]: Start difference. First operand has 125 places, 173 transitions, 1414 flow. Second operand 7 states and 662 transitions. [2022-09-16 11:50:25,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 221 transitions, 2253 flow [2022-09-16 11:50:25,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 221 transitions, 2221 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:25,610 INFO L231 Difference]: Finished difference. Result has 130 places, 213 transitions, 2229 flow [2022-09-16 11:50:25,610 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2229, PETRI_PLACES=130, PETRI_TRANSITIONS=213} [2022-09-16 11:50:25,610 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 22 predicate places. [2022-09-16 11:50:25,610 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 213 transitions, 2229 flow [2022-09-16 11:50:25,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:25,611 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:25,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:50:25,611 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:25,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash 443805016, now seen corresponding path program 1 times [2022-09-16 11:50:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:25,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165999212] [2022-09-16 11:50:25,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:25,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:25,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165999212] [2022-09-16 11:50:25,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165999212] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778179185] [2022-09-16 11:50:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:25,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:25,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:25,676 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 11:50:25,677 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 11:50:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:25,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:50:25,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:25,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:25,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778179185] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:25,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:25,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-09-16 11:50:25,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939833711] [2022-09-16 11:50:25,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:25,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:50:25,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:25,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:50:25,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-09-16 11:50:25,874 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 124 [2022-09-16 11:50:25,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 213 transitions, 2229 flow. Second operand has 13 states, 13 states have (on average 89.15384615384616) internal successors, (1159), 13 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:25,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:25,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 124 [2022-09-16 11:50:25,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:27,653 INFO L130 PetriNetUnfolder]: 4845/16367 cut-off events. [2022-09-16 11:50:27,653 INFO L131 PetriNetUnfolder]: For 121916/121916 co-relation queries the response was YES. [2022-09-16 11:50:27,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62291 conditions, 16367 events. 4845/16367 cut-off events. For 121916/121916 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 194720 event pairs, 130 based on Foata normal form. 562/14927 useless extension candidates. Maximal degree in co-relation 61608. Up to 3626 conditions per place. [2022-09-16 11:50:27,783 INFO L137 encePairwiseOnDemand]: 114/124 looper letters, 437 selfloop transitions, 104 changer transitions 0/612 dead transitions. [2022-09-16 11:50:27,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 612 transitions, 9293 flow [2022-09-16 11:50:27,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:50:27,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:50:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 869 transitions. [2022-09-16 11:50:27,785 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7786738351254481 [2022-09-16 11:50:27,786 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 869 transitions. [2022-09-16 11:50:27,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 869 transitions. [2022-09-16 11:50:27,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:27,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 869 transitions. [2022-09-16 11:50:27,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.55555555555556) internal successors, (869), 9 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:27,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:27,789 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:27,789 INFO L175 Difference]: Start difference. First operand has 130 places, 213 transitions, 2229 flow. Second operand 9 states and 869 transitions. [2022-09-16 11:50:27,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 612 transitions, 9293 flow [2022-09-16 11:50:28,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 612 transitions, 9084 flow, removed 102 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:28,019 INFO L231 Difference]: Finished difference. Result has 139 places, 296 transitions, 4017 flow [2022-09-16 11:50:28,019 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4017, PETRI_PLACES=139, PETRI_TRANSITIONS=296} [2022-09-16 11:50:28,020 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 31 predicate places. [2022-09-16 11:50:28,020 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 296 transitions, 4017 flow [2022-09-16 11:50:28,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 89.15384615384616) internal successors, (1159), 13 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:28,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:28,021 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:28,059 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 11:50:28,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:28,235 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:28,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash 2068782924, now seen corresponding path program 1 times [2022-09-16 11:50:28,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:28,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032203467] [2022-09-16 11:50:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:28,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:28,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:28,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032203467] [2022-09-16 11:50:28,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032203467] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:28,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:28,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:50:28,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696759392] [2022-09-16 11:50:28,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:28,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:50:28,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:28,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:50:28,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:50:28,318 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-09-16 11:50:28,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 296 transitions, 4017 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:28,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:28,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-09-16 11:50:28,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:32,245 INFO L130 PetriNetUnfolder]: 10917/31451 cut-off events. [2022-09-16 11:50:32,246 INFO L131 PetriNetUnfolder]: For 287075/287075 co-relation queries the response was YES. [2022-09-16 11:50:32,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130588 conditions, 31451 events. 10917/31451 cut-off events. For 287075/287075 co-relation queries the response was YES. Maximal size of possible extension queue 1457. Compared 384423 event pairs, 1778 based on Foata normal form. 61/27799 useless extension candidates. Maximal degree in co-relation 129668. Up to 7682 conditions per place. [2022-09-16 11:50:32,562 INFO L137 encePairwiseOnDemand]: 107/124 looper letters, 231 selfloop transitions, 112 changer transitions 0/413 dead transitions. [2022-09-16 11:50:32,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 413 transitions, 6604 flow [2022-09-16 11:50:32,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:50:32,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:50:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2022-09-16 11:50:32,564 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7647849462365591 [2022-09-16 11:50:32,564 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2022-09-16 11:50:32,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2022-09-16 11:50:32,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:32,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2022-09-16 11:50:32,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:32,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:32,566 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:32,566 INFO L175 Difference]: Start difference. First operand has 139 places, 296 transitions, 4017 flow. Second operand 6 states and 569 transitions. [2022-09-16 11:50:32,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 413 transitions, 6604 flow [2022-09-16 11:50:32,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 413 transitions, 6540 flow, removed 19 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:32,742 INFO L231 Difference]: Finished difference. Result has 144 places, 369 transitions, 5922 flow [2022-09-16 11:50:32,742 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3974, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5922, PETRI_PLACES=144, PETRI_TRANSITIONS=369} [2022-09-16 11:50:32,743 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 36 predicate places. [2022-09-16 11:50:32,743 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 369 transitions, 5922 flow [2022-09-16 11:50:32,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:32,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:32,743 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:32,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:50:32,743 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:32,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:32,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1083882478, now seen corresponding path program 1 times [2022-09-16 11:50:32,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:32,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258089046] [2022-09-16 11:50:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:32,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:32,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:32,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258089046] [2022-09-16 11:50:32,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258089046] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:32,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206759759] [2022-09-16 11:50:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:32,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:32,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:32,796 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 11:50:32,831 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 11:50:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:32,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:50:32,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:32,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:33,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206759759] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:33,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-16 11:50:33,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2022-09-16 11:50:33,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254236715] [2022-09-16 11:50:33,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:33,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:50:33,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:50:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-09-16 11:50:33,030 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2022-09-16 11:50:33,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 369 transitions, 5922 flow. Second operand has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:33,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:33,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2022-09-16 11:50:33,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:39,551 INFO L130 PetriNetUnfolder]: 14757/45845 cut-off events. [2022-09-16 11:50:39,552 INFO L131 PetriNetUnfolder]: For 522969/522969 co-relation queries the response was YES. [2022-09-16 11:50:39,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196545 conditions, 45845 events. 14757/45845 cut-off events. For 522969/522969 co-relation queries the response was YES. Maximal size of possible extension queue 2231. Compared 621768 event pairs, 2262 based on Foata normal form. 309/40596 useless extension candidates. Maximal degree in co-relation 195548. Up to 11421 conditions per place. [2022-09-16 11:50:40,155 INFO L137 encePairwiseOnDemand]: 109/124 looper letters, 456 selfloop transitions, 68 changer transitions 0/592 dead transitions. [2022-09-16 11:50:40,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 592 transitions, 11325 flow [2022-09-16 11:50:40,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:50:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:50:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 558 transitions. [2022-09-16 11:50:40,157 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-09-16 11:50:40,157 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 558 transitions. [2022-09-16 11:50:40,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 558 transitions. [2022-09-16 11:50:40,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:40,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 558 transitions. [2022-09-16 11:50:40,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:40,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:40,179 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:40,180 INFO L175 Difference]: Start difference. First operand has 144 places, 369 transitions, 5922 flow. Second operand 6 states and 558 transitions. [2022-09-16 11:50:40,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 592 transitions, 11325 flow [2022-09-16 11:50:40,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 592 transitions, 11247 flow, removed 37 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:40,904 INFO L231 Difference]: Finished difference. Result has 150 places, 429 transitions, 7400 flow [2022-09-16 11:50:40,904 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5878, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7400, PETRI_PLACES=150, PETRI_TRANSITIONS=429} [2022-09-16 11:50:40,910 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 42 predicate places. [2022-09-16 11:50:40,911 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 429 transitions, 7400 flow [2022-09-16 11:50:40,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:40,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:40,911 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:40,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:50:41,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:50:41,112 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:50:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1170370333, now seen corresponding path program 2 times [2022-09-16 11:50:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:41,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693689776] [2022-09-16 11:50:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:41,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:41,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:41,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693689776] [2022-09-16 11:50:41,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693689776] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:41,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002434204] [2022-09-16 11:50:41,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:50:41,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:41,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:41,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:50:41,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:50:41,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:50:41,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:50:41,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2022-09-16 11:50:41,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:41,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:41,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002434204] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:41,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:41,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-09-16 11:50:41,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703546619] [2022-09-16 11:50:41,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:41,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:50:41,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:41,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:50:41,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:50:41,448 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-09-16 11:50:41,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 429 transitions, 7400 flow. Second operand has 19 states, 19 states have (on average 87.47368421052632) internal successors, (1662), 19 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:41,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:41,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-09-16 11:50:41,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:01,799 INFO L130 PetriNetUnfolder]: 34745/123534 cut-off events. [2022-09-16 11:51:01,800 INFO L131 PetriNetUnfolder]: For 2125168/2125168 co-relation queries the response was YES. [2022-09-16 11:51:02,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485347 conditions, 123534 events. 34745/123534 cut-off events. For 2125168/2125168 co-relation queries the response was YES. Maximal size of possible extension queue 3487. Compared 1912132 event pairs, 229 based on Foata normal form. 14856/122673 useless extension candidates. Maximal degree in co-relation 482697. Up to 25677 conditions per place. [2022-09-16 11:51:03,697 INFO L137 encePairwiseOnDemand]: 107/124 looper letters, 296 selfloop transitions, 884 changer transitions 0/1250 dead transitions. [2022-09-16 11:51:03,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 1250 transitions, 25032 flow [2022-09-16 11:51:03,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:51:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:51:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1558 transitions. [2022-09-16 11:51:03,702 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7852822580645161 [2022-09-16 11:51:03,702 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1558 transitions. [2022-09-16 11:51:03,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1558 transitions. [2022-09-16 11:51:03,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:03,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1558 transitions. [2022-09-16 11:51:03,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.375) internal successors, (1558), 16 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:03,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:03,721 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:03,721 INFO L175 Difference]: Start difference. First operand has 150 places, 429 transitions, 7400 flow. Second operand 16 states and 1558 transitions. [2022-09-16 11:51:03,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 1250 transitions, 25032 flow [2022-09-16 11:51:06,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 1250 transitions, 24996 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-09-16 11:51:06,525 INFO L231 Difference]: Finished difference. Result has 173 places, 1206 transitions, 27056 flow [2022-09-16 11:51:06,526 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7364, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=27056, PETRI_PLACES=173, PETRI_TRANSITIONS=1206} [2022-09-16 11:51:06,526 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 65 predicate places. [2022-09-16 11:51:06,526 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 1206 transitions, 27056 flow [2022-09-16 11:51:06,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 87.47368421052632) internal successors, (1662), 19 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:06,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:06,527 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:06,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:51:06,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-09-16 11:51:06,738 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:51:06,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:06,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1909600541, now seen corresponding path program 2 times [2022-09-16 11:51:06,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:06,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096765571] [2022-09-16 11:51:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:06,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:06,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:06,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096765571] [2022-09-16 11:51:06,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096765571] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:51:06,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974376179] [2022-09-16 11:51:06,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:51:06,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:06,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:51:06,834 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:51:06,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:51:06,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:51:06,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:51:06,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 11 conjunts are in the unsatisfiable core [2022-09-16 11:51:06,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:51:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:06,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:51:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:07,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974376179] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:51:07,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:51:07,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 14 [2022-09-16 11:51:07,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241650303] [2022-09-16 11:51:07,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:51:07,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:51:07,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:51:07,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:51:07,020 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-09-16 11:51:07,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 1206 transitions, 27056 flow. Second operand has 15 states, 15 states have (on average 88.06666666666666) internal successors, (1321), 15 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:07,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:07,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-09-16 11:51:07,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:20,894 INFO L130 PetriNetUnfolder]: 75813/259486 cut-off events. [2022-09-16 11:52:20,895 INFO L131 PetriNetUnfolder]: For 4420592/4420592 co-relation queries the response was YES. [2022-09-16 11:52:24,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222022 conditions, 259486 events. 75813/259486 cut-off events. For 4420592/4420592 co-relation queries the response was YES. Maximal size of possible extension queue 7268. Compared 4292495 event pairs, 1627 based on Foata normal form. 3381/230282 useless extension candidates. Maximal degree in co-relation 1215143. Up to 54703 conditions per place. [2022-09-16 11:52:26,287 INFO L137 encePairwiseOnDemand]: 107/124 looper letters, 1184 selfloop transitions, 1776 changer transitions 0/3030 dead transitions. [2022-09-16 11:52:26,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 3030 transitions, 73681 flow [2022-09-16 11:52:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:52:26,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:52:26,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1154 transitions. [2022-09-16 11:52:26,298 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7755376344086021 [2022-09-16 11:52:26,299 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1154 transitions. [2022-09-16 11:52:26,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1154 transitions. [2022-09-16 11:52:26,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:26,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1154 transitions. [2022-09-16 11:52:26,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.16666666666667) internal successors, (1154), 12 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:26,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:26,315 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:26,315 INFO L175 Difference]: Start difference. First operand has 173 places, 1206 transitions, 27056 flow. Second operand 12 states and 1154 transitions. [2022-09-16 11:52:26,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 3030 transitions, 73681 flow [2022-09-16 11:52:53,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 3030 transitions, 68827 flow, removed 2422 selfloop flow, removed 4 redundant places. [2022-09-16 11:52:53,578 INFO L231 Difference]: Finished difference. Result has 185 places, 2680 transitions, 65624 flow [2022-09-16 11:52:53,579 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=25314, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=840, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=65624, PETRI_PLACES=185, PETRI_TRANSITIONS=2680} [2022-09-16 11:52:53,579 INFO L287 CegarLoopForPetriNet]: 108 programPoint places, 77 predicate places. [2022-09-16 11:52:53,579 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 2680 transitions, 65624 flow [2022-09-16 11:52:53,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 88.06666666666666) internal successors, (1321), 15 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:53,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:53,580 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:52:53,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-09-16 11:52:53,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-09-16 11:52:53,796 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:52:53,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:53,796 INFO L85 PathProgramCache]: Analyzing trace with hash 312202474, now seen corresponding path program 1 times [2022-09-16 11:52:53,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:53,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057405481] [2022-09-16 11:52:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:53,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:52:53,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:53,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057405481] [2022-09-16 11:52:53,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057405481] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:53,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:53,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:52:53,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783715244] [2022-09-16 11:52:53,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:53,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:52:53,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:53,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:52:53,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:52:53,885 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-09-16 11:52:53,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 2680 transitions, 65624 flow. Second operand has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:53,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:53,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-09-16 11:52:53,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand