/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:54:51,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:54:51,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:54:51,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:54:51,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:54:51,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:54:51,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:54:51,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:54:51,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:54:51,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:54:51,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:54:51,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:54:51,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:54:51,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:54:51,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:54:51,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:54:51,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:54:51,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:54:51,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:54:51,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:54:51,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:54:51,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:54:51,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:54:51,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:54:51,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:54:51,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:54:51,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:54:51,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:54:51,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:54:51,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:54:51,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:54:51,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:54:51,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:54:51,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:54:51,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:54:51,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:54:51,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:54:51,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:54:51,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:54:51,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:54:51,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:54:51,425 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 11:54:51,448 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:54:51,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:54:51,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:54:51,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:54:51,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:54:51,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:54:51,450 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:54:51,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:54:51,450 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:54:51,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:54:51,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:54:51,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:54:51,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:54:51,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:54:51,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:54:51,451 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:54:51,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:54:51,451 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:54:51,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:54:51,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:54:51,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:54:51,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:54:51,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:54:51,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:54:51,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:54:51,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:54:51,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:54:51,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:54:51,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:54:51,453 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:54:51,453 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:54:51,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:54:51,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:54:51,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:54:51,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:54:51,709 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:54:51,709 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:54:51,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2022-09-16 11:54:51,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc89b45d3/12be5d6ec0ac48b8a4b52fd8ef9a8417/FLAGca3bd2090 [2022-09-16 11:54:52,145 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:54:52,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2022-09-16 11:54:52,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc89b45d3/12be5d6ec0ac48b8a4b52fd8ef9a8417/FLAGca3bd2090 [2022-09-16 11:54:52,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc89b45d3/12be5d6ec0ac48b8a4b52fd8ef9a8417 [2022-09-16 11:54:52,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:54:52,169 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:54:52,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:54:52,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:54:52,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:54:52,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:54:52" (1/1) ... [2022-09-16 11:54:52,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1563fd6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52, skipping insertion in model container [2022-09-16 11:54:52,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:54:52" (1/1) ... [2022-09-16 11:54:52,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:54:52,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:54:52,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-09-16 11:54:52,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:54:52,466 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:54:52,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-09-16 11:54:52,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:54:52,516 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:54:52,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52 WrapperNode [2022-09-16 11:54:52,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:54:52,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:54:52,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:54:52,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:54:52,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52" (1/1) ... [2022-09-16 11:54:52,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52" (1/1) ... [2022-09-16 11:54:52,577 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 488 [2022-09-16 11:54:52,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:54:52,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:54:52,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:54:52,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:54:52,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52" (1/1) ... [2022-09-16 11:54:52,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52" (1/1) ... [2022-09-16 11:54:52,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52" (1/1) ... [2022-09-16 11:54:52,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52" (1/1) ... [2022-09-16 11:54:52,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52" (1/1) ... [2022-09-16 11:54:52,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52" (1/1) ... [2022-09-16 11:54:52,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52" (1/1) ... [2022-09-16 11:54:52,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:54:52,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:54:52,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:54:52,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:54:52,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52" (1/1) ... [2022-09-16 11:54:52,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:54:52,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:54:52,676 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 11:54:52,679 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 11:54:52,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:54:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:54:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:54:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:54:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:54:52,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:54:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:54:52,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:54:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:54:52,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:54:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:54:52,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:54:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:54:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:54:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:54:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:54:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:54:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:54:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:54:52,732 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 11:54:52,866 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:54:52,867 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:54:53,387 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:54:53,639 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:54:53,639 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-09-16 11:54:53,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:54:53 BoogieIcfgContainer [2022-09-16 11:54:53,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:54:53,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:54:53,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:54:53,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:54:53,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:54:52" (1/3) ... [2022-09-16 11:54:53,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b0990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:54:53, skipping insertion in model container [2022-09-16 11:54:53,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:52" (2/3) ... [2022-09-16 11:54:53,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b0990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:54:53, skipping insertion in model container [2022-09-16 11:54:53,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:54:53" (3/3) ... [2022-09-16 11:54:53,648 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-09-16 11:54:53,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:54:53,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-09-16 11:54:53,662 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:54:53,751 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:54:53,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 367 transitions, 766 flow [2022-09-16 11:54:53,850 INFO L130 PetriNetUnfolder]: 25/363 cut-off events. [2022-09-16 11:54:53,850 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-16 11:54:53,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 363 events. 25/363 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 330 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 320. Up to 2 conditions per place. [2022-09-16 11:54:53,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 367 transitions, 766 flow [2022-09-16 11:54:53,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 340 transitions, 701 flow [2022-09-16 11:54:53,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:54:53,869 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;@7bde59d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:54:53,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-09-16 11:54:53,877 INFO L130 PetriNetUnfolder]: 3/80 cut-off events. [2022-09-16 11:54:53,877 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:54:53,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:53,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:54:53,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:54:53,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:53,881 INFO L85 PathProgramCache]: Analyzing trace with hash 867123507, now seen corresponding path program 1 times [2022-09-16 11:54:53,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:53,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210050484] [2022-09-16 11:54:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:53,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:54,037 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 11:54:54,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:54,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210050484] [2022-09-16 11:54:54,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210050484] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:54,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:54,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:54:54,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376395265] [2022-09-16 11:54:54,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:54,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:54:54,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:54,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:54:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:54:54,065 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-09-16 11:54:54,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 340 transitions, 701 flow. Second operand has 4 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:54,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:54,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-09-16 11:54:54,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:55,990 INFO L130 PetriNetUnfolder]: 6441/9073 cut-off events. [2022-09-16 11:54:55,990 INFO L131 PetriNetUnfolder]: For 1010/1014 co-relation queries the response was YES. [2022-09-16 11:54:56,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18984 conditions, 9073 events. 6441/9073 cut-off events. For 1010/1014 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 49211 event pairs, 4782 based on Foata normal form. 1660/6651 useless extension candidates. Maximal degree in co-relation 9063. Up to 4373 conditions per place. [2022-09-16 11:54:56,068 INFO L137 encePairwiseOnDemand]: 312/367 looper letters, 126 selfloop transitions, 19 changer transitions 8/378 dead transitions. [2022-09-16 11:54:56,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 378 transitions, 1088 flow [2022-09-16 11:54:56,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:54:56,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:54:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1486 transitions. [2022-09-16 11:54:56,081 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8098092643051771 [2022-09-16 11:54:56,082 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1486 transitions. [2022-09-16 11:54:56,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1486 transitions. [2022-09-16 11:54:56,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:56,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1486 transitions. [2022-09-16 11:54:56,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:56,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:56,099 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:56,100 INFO L175 Difference]: Start difference. First operand has 329 places, 340 transitions, 701 flow. Second operand 5 states and 1486 transitions. [2022-09-16 11:54:56,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 378 transitions, 1088 flow [2022-09-16 11:54:56,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 378 transitions, 1062 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:54:56,121 INFO L231 Difference]: Finished difference. Result has 317 places, 319 transitions, 757 flow [2022-09-16 11:54:56,123 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=757, PETRI_PLACES=317, PETRI_TRANSITIONS=319} [2022-09-16 11:54:56,125 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, -12 predicate places. [2022-09-16 11:54:56,126 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 319 transitions, 757 flow [2022-09-16 11:54:56,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:56,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:56,127 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:54:56,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:54:56,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:54:56,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:56,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1846259264, now seen corresponding path program 1 times [2022-09-16 11:54:56,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:56,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017322601] [2022-09-16 11:54:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:56,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:56,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:56,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017322601] [2022-09-16 11:54:56,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017322601] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:54:56,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257537275] [2022-09-16 11:54:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:56,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:56,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:54:56,202 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 11:54:56,232 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 11:54:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:56,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:54:56,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:54:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:56,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:54:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:56,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257537275] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:54:56,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:54:56,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:54:56,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368485430] [2022-09-16 11:54:56,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:54:56,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:54:56,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:56,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:54:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:54:56,417 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-09-16 11:54:56,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 319 transitions, 757 flow. Second operand has 12 states, 12 states have (on average 259.6666666666667) internal successors, (3116), 12 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:56,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:56,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-09-16 11:54:56,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:00,701 INFO L130 PetriNetUnfolder]: 16101/22486 cut-off events. [2022-09-16 11:55:00,701 INFO L131 PetriNetUnfolder]: For 479/489 co-relation queries the response was YES. [2022-09-16 11:55:00,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46628 conditions, 22486 events. 16101/22486 cut-off events. For 479/489 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 129177 event pairs, 11955 based on Foata normal form. 12/12333 useless extension candidates. Maximal degree in co-relation 36692. Up to 4362 conditions per place. [2022-09-16 11:55:00,904 INFO L137 encePairwiseOnDemand]: 336/367 looper letters, 267 selfloop transitions, 84 changer transitions 0/576 dead transitions. [2022-09-16 11:55:00,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 576 transitions, 2111 flow [2022-09-16 11:55:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:55:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:55:00,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4989 transitions. [2022-09-16 11:55:00,914 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7552225249772934 [2022-09-16 11:55:00,914 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4989 transitions. [2022-09-16 11:55:00,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4989 transitions. [2022-09-16 11:55:00,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:00,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4989 transitions. [2022-09-16 11:55:00,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 277.1666666666667) internal successors, (4989), 18 states have internal predecessors, (4989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:00,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 367.0) internal successors, (6973), 19 states have internal predecessors, (6973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:00,939 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 367.0) internal successors, (6973), 19 states have internal predecessors, (6973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:00,939 INFO L175 Difference]: Start difference. First operand has 317 places, 319 transitions, 757 flow. Second operand 18 states and 4989 transitions. [2022-09-16 11:55:00,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 576 transitions, 2111 flow [2022-09-16 11:55:00,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 576 transitions, 2100 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:00,953 INFO L231 Difference]: Finished difference. Result has 329 places, 376 transitions, 1248 flow [2022-09-16 11:55:00,954 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1248, PETRI_PLACES=329, PETRI_TRANSITIONS=376} [2022-09-16 11:55:00,955 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 0 predicate places. [2022-09-16 11:55:00,955 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 376 transitions, 1248 flow [2022-09-16 11:55:00,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 259.6666666666667) internal successors, (3116), 12 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:00,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:00,958 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:00,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 11:55:01,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:01,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:55:01,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:01,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1399463769, now seen corresponding path program 1 times [2022-09-16 11:55:01,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:01,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391571868] [2022-09-16 11:55:01,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:01,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:01,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:01,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391571868] [2022-09-16 11:55:01,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391571868] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:01,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927540388] [2022-09-16 11:55:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:01,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:01,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:01,295 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 11:55:01,296 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 11:55:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:01,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:01,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:01,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:01,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927540388] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:01,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:01,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:55:01,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577885620] [2022-09-16 11:55:01,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:01,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:55:01,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:01,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:55:01,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:55:01,463 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-09-16 11:55:01,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 376 transitions, 1248 flow. Second operand has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:01,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:01,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-09-16 11:55:01,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:05,456 INFO L130 PetriNetUnfolder]: 16101/22470 cut-off events. [2022-09-16 11:55:05,456 INFO L131 PetriNetUnfolder]: For 689/699 co-relation queries the response was YES. [2022-09-16 11:55:05,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46703 conditions, 22470 events. 16101/22470 cut-off events. For 689/699 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 128968 event pairs, 11955 based on Foata normal form. 16/12321 useless extension candidates. Maximal degree in co-relation 37304. Up to 17348 conditions per place. [2022-09-16 11:55:05,782 INFO L137 encePairwiseOnDemand]: 344/367 looper letters, 127 selfloop transitions, 59 changer transitions 0/411 dead transitions. [2022-09-16 11:55:05,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 411 transitions, 1630 flow [2022-09-16 11:55:05,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:55:05,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:55:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1944 transitions. [2022-09-16 11:55:05,786 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7567146749708058 [2022-09-16 11:55:05,786 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1944 transitions. [2022-09-16 11:55:05,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1944 transitions. [2022-09-16 11:55:05,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:05,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1944 transitions. [2022-09-16 11:55:05,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.7142857142857) internal successors, (1944), 7 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:05,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:05,794 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:05,794 INFO L175 Difference]: Start difference. First operand has 329 places, 376 transitions, 1248 flow. Second operand 7 states and 1944 transitions. [2022-09-16 11:55:05,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 411 transitions, 1630 flow [2022-09-16 11:55:05,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 411 transitions, 1472 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:05,803 INFO L231 Difference]: Finished difference. Result has 322 places, 360 transitions, 1100 flow [2022-09-16 11:55:05,804 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1100, PETRI_PLACES=322, PETRI_TRANSITIONS=360} [2022-09-16 11:55:05,806 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, -7 predicate places. [2022-09-16 11:55:05,806 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 360 transitions, 1100 flow [2022-09-16 11:55:05,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:05,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:05,807 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:05,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:06,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:55:06,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:55:06,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:06,020 INFO L85 PathProgramCache]: Analyzing trace with hash 127637107, now seen corresponding path program 2 times [2022-09-16 11:55:06,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:06,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730353876] [2022-09-16 11:55:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:06,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:06,137 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:06,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:06,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730353876] [2022-09-16 11:55:06,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730353876] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:06,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128979123] [2022-09-16 11:55:06,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:55:06,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:06,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:06,140 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 11:55:06,142 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 11:55:06,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:55:06,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:55:06,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:55:06,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:55:06,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:55:06,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128979123] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:06,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:06,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:55:06,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901092635] [2022-09-16 11:55:06,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:06,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:55:06,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:06,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:55:06,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:55:06,561 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 367 [2022-09-16 11:55:06,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 360 transitions, 1100 flow. Second operand has 18 states, 18 states have (on average 235.61111111111111) internal successors, (4241), 18 states have internal predecessors, (4241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:06,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:06,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 367 [2022-09-16 11:55:06,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:09,516 INFO L130 PetriNetUnfolder]: 7988/11916 cut-off events. [2022-09-16 11:55:09,517 INFO L131 PetriNetUnfolder]: For 595/602 co-relation queries the response was YES. [2022-09-16 11:55:09,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24616 conditions, 11916 events. 7988/11916 cut-off events. For 595/602 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 62844 event pairs, 5306 based on Foata normal form. 8/8466 useless extension candidates. Maximal degree in co-relation 20160. Up to 1593 conditions per place. [2022-09-16 11:55:09,588 INFO L137 encePairwiseOnDemand]: 325/367 looper letters, 333 selfloop transitions, 129 changer transitions 0/662 dead transitions. [2022-09-16 11:55:09,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 662 transitions, 2819 flow [2022-09-16 11:55:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:55:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-09-16 11:55:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 11880 transitions. [2022-09-16 11:55:09,606 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6606239225935606 [2022-09-16 11:55:09,606 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 11880 transitions. [2022-09-16 11:55:09,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 11880 transitions. [2022-09-16 11:55:09,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:09,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 11880 transitions. [2022-09-16 11:55:09,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 242.44897959183675) internal successors, (11880), 49 states have internal predecessors, (11880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 367.0) internal successors, (18350), 50 states have internal predecessors, (18350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,665 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 367.0) internal successors, (18350), 50 states have internal predecessors, (18350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,665 INFO L175 Difference]: Start difference. First operand has 322 places, 360 transitions, 1100 flow. Second operand 49 states and 11880 transitions. [2022-09-16 11:55:09,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 662 transitions, 2819 flow [2022-09-16 11:55:09,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 662 transitions, 2724 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:09,675 INFO L231 Difference]: Finished difference. Result has 362 places, 409 transitions, 1559 flow [2022-09-16 11:55:09,676 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1559, PETRI_PLACES=362, PETRI_TRANSITIONS=409} [2022-09-16 11:55:09,677 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 33 predicate places. [2022-09-16 11:55:09,677 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 409 transitions, 1559 flow [2022-09-16 11:55:09,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 235.61111111111111) internal successors, (4241), 18 states have internal predecessors, (4241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:09,678 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:09,696 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 11:55:09,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:09,896 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:55:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:09,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1915746962, now seen corresponding path program 1 times [2022-09-16 11:55:09,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:09,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868649274] [2022-09-16 11:55:09,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:09,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:10,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:10,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868649274] [2022-09-16 11:55:10,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868649274] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:10,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829845584] [2022-09-16 11:55:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:10,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:10,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:10,081 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 11:55:10,111 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 11:55:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:10,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 11:55:10,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:10,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:10,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829845584] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:10,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:10,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-09-16 11:55:10,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262873332] [2022-09-16 11:55:10,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:10,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-16 11:55:10,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:10,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-16 11:55:10,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-09-16 11:55:10,611 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-09-16 11:55:10,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 409 transitions, 1559 flow. Second operand has 32 states, 32 states have (on average 260.28125) internal successors, (8329), 32 states have internal predecessors, (8329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:10,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:10,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-09-16 11:55:10,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:16,174 INFO L130 PetriNetUnfolder]: 17116/25419 cut-off events. [2022-09-16 11:55:16,174 INFO L131 PetriNetUnfolder]: For 1956/1971 co-relation queries the response was YES. [2022-09-16 11:55:16,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52818 conditions, 25419 events. 17116/25419 cut-off events. For 1956/1971 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 142105 event pairs, 11370 based on Foata normal form. 24/18093 useless extension candidates. Maximal degree in co-relation 52018. Up to 2625 conditions per place. [2022-09-16 11:55:16,346 INFO L137 encePairwiseOnDemand]: 341/367 looper letters, 686 selfloop transitions, 218 changer transitions 0/1135 dead transitions. [2022-09-16 11:55:16,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1135 transitions, 5875 flow [2022-09-16 11:55:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-09-16 11:55:16,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-09-16 11:55:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 12236 transitions. [2022-09-16 11:55:16,360 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7577408967054744 [2022-09-16 11:55:16,360 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 12236 transitions. [2022-09-16 11:55:16,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 12236 transitions. [2022-09-16 11:55:16,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:16,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 12236 transitions. [2022-09-16 11:55:16,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 278.09090909090907) internal successors, (12236), 44 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:16,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 367.0) internal successors, (16515), 45 states have internal predecessors, (16515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:16,401 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 367.0) internal successors, (16515), 45 states have internal predecessors, (16515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:16,401 INFO L175 Difference]: Start difference. First operand has 362 places, 409 transitions, 1559 flow. Second operand 44 states and 12236 transitions. [2022-09-16 11:55:16,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1135 transitions, 5875 flow [2022-09-16 11:55:16,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1135 transitions, 5533 flow, removed 104 selfloop flow, removed 15 redundant places. [2022-09-16 11:55:16,418 INFO L231 Difference]: Finished difference. Result has 399 places, 535 transitions, 2771 flow [2022-09-16 11:55:16,419 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2771, PETRI_PLACES=399, PETRI_TRANSITIONS=535} [2022-09-16 11:55:16,419 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 70 predicate places. [2022-09-16 11:55:16,420 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 535 transitions, 2771 flow [2022-09-16 11:55:16,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 260.28125) internal successors, (8329), 32 states have internal predecessors, (8329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:16,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:16,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:16,440 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 11:55:16,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:16,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:55:16,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:16,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2011792613, now seen corresponding path program 1 times [2022-09-16 11:55:16,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:16,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795012957] [2022-09-16 11:55:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:16,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:16,735 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 11:55:16,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:16,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795012957] [2022-09-16 11:55:16,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795012957] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:16,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:16,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:55:16,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211304740] [2022-09-16 11:55:16,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:16,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:55:16,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:16,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:55:16,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:55:16,740 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 367 [2022-09-16 11:55:16,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 535 transitions, 2771 flow. Second operand has 6 states, 6 states have (on average 261.1666666666667) internal successors, (1567), 6 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:16,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:16,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 367 [2022-09-16 11:55:16,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:22,065 INFO L130 PetriNetUnfolder]: 18286/28421 cut-off events. [2022-09-16 11:55:22,065 INFO L131 PetriNetUnfolder]: For 3098/3128 co-relation queries the response was YES. [2022-09-16 11:55:22,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58349 conditions, 28421 events. 18286/28421 cut-off events. For 3098/3128 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 171401 event pairs, 12135 based on Foata normal form. 735/21221 useless extension candidates. Maximal degree in co-relation 57535. Up to 23165 conditions per place. [2022-09-16 11:55:22,281 INFO L137 encePairwiseOnDemand]: 354/367 looper letters, 291 selfloop transitions, 24 changer transitions 0/596 dead transitions. [2022-09-16 11:55:22,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 596 transitions, 3720 flow [2022-09-16 11:55:22,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:55:22,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:55:22,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2405 transitions. [2022-09-16 11:55:22,304 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7281259461095974 [2022-09-16 11:55:22,304 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2405 transitions. [2022-09-16 11:55:22,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2405 transitions. [2022-09-16 11:55:22,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:22,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2405 transitions. [2022-09-16 11:55:22,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 267.22222222222223) internal successors, (2405), 9 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:22,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 367.0) internal successors, (3670), 10 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:22,317 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 367.0) internal successors, (3670), 10 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:22,317 INFO L175 Difference]: Start difference. First operand has 399 places, 535 transitions, 2771 flow. Second operand 9 states and 2405 transitions. [2022-09-16 11:55:22,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 596 transitions, 3720 flow [2022-09-16 11:55:22,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 596 transitions, 3562 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-09-16 11:55:22,346 INFO L231 Difference]: Finished difference. Result has 393 places, 536 transitions, 2695 flow [2022-09-16 11:55:22,347 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2695, PETRI_PLACES=393, PETRI_TRANSITIONS=536} [2022-09-16 11:55:22,364 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 64 predicate places. [2022-09-16 11:55:22,364 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 536 transitions, 2695 flow [2022-09-16 11:55:22,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.1666666666667) internal successors, (1567), 6 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:22,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:22,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:22,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:55:22,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:55:22,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:22,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1413379815, now seen corresponding path program 1 times [2022-09-16 11:55:22,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:22,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406295888] [2022-09-16 11:55:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:22,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:22,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:22,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406295888] [2022-09-16 11:55:22,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406295888] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:22,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903395010] [2022-09-16 11:55:22,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:22,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:22,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:22,468 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 11:55:22,470 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 11:55:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:22,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:22,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:22,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:55:22,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:22,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903395010] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:22,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:22,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-09-16 11:55:22,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191208816] [2022-09-16 11:55:22,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:22,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:22,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:22,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:22,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:55:22,708 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 367 [2022-09-16 11:55:22,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 536 transitions, 2695 flow. Second operand has 4 states, 4 states have (on average 301.25) internal successors, (1205), 4 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:22,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:22,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 367 [2022-09-16 11:55:22,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:26,098 INFO L130 PetriNetUnfolder]: 11596/19436 cut-off events. [2022-09-16 11:55:26,098 INFO L131 PetriNetUnfolder]: For 3932/3962 co-relation queries the response was YES. [2022-09-16 11:55:26,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40869 conditions, 19436 events. 11596/19436 cut-off events. For 3932/3962 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 121645 event pairs, 7080 based on Foata normal form. 0/15716 useless extension candidates. Maximal degree in co-relation 40176. Up to 16007 conditions per place. [2022-09-16 11:55:26,242 INFO L137 encePairwiseOnDemand]: 362/367 looper letters, 26 selfloop transitions, 3 changer transitions 0/534 dead transitions. [2022-09-16 11:55:26,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 534 transitions, 2745 flow [2022-09-16 11:55:26,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:55:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:55:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1227 transitions. [2022-09-16 11:55:26,243 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8358310626702997 [2022-09-16 11:55:26,244 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1227 transitions. [2022-09-16 11:55:26,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1227 transitions. [2022-09-16 11:55:26,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:26,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1227 transitions. [2022-09-16 11:55:26,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.75) internal successors, (1227), 4 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:26,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:26,247 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:26,247 INFO L175 Difference]: Start difference. First operand has 393 places, 536 transitions, 2695 flow. Second operand 4 states and 1227 transitions. [2022-09-16 11:55:26,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 534 transitions, 2745 flow [2022-09-16 11:55:26,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 534 transitions, 2723 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:55:26,261 INFO L231 Difference]: Finished difference. Result has 391 places, 534 transitions, 2671 flow [2022-09-16 11:55:26,262 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2671, PETRI_PLACES=391, PETRI_TRANSITIONS=534} [2022-09-16 11:55:26,262 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 62 predicate places. [2022-09-16 11:55:26,263 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 534 transitions, 2671 flow [2022-09-16 11:55:26,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 301.25) internal successors, (1205), 4 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:26,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:26,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:26,283 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 11:55:26,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:26,481 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:55:26,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:26,481 INFO L85 PathProgramCache]: Analyzing trace with hash 865102846, now seen corresponding path program 1 times [2022-09-16 11:55:26,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:26,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367737141] [2022-09-16 11:55:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:26,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:55:26,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:26,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367737141] [2022-09-16 11:55:26,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367737141] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:26,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:26,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:55:26,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739675077] [2022-09-16 11:55:26,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:26,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:55:26,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:26,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:55:26,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:55:26,540 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 367 [2022-09-16 11:55:26,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 534 transitions, 2671 flow. Second operand has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:26,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:26,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 367 [2022-09-16 11:55:26,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:29,949 INFO L130 PetriNetUnfolder]: 10913/18524 cut-off events. [2022-09-16 11:55:29,949 INFO L131 PetriNetUnfolder]: For 4457/4487 co-relation queries the response was YES. [2022-09-16 11:55:30,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39258 conditions, 18524 events. 10913/18524 cut-off events. For 4457/4487 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 115949 event pairs, 6662 based on Foata normal form. 58/15073 useless extension candidates. Maximal degree in co-relation 38457. Up to 15060 conditions per place. [2022-09-16 11:55:30,244 INFO L137 encePairwiseOnDemand]: 356/367 looper letters, 261 selfloop transitions, 8 changer transitions 0/550 dead transitions. [2022-09-16 11:55:30,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 550 transitions, 3253 flow [2022-09-16 11:55:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:55:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:55:30,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1881 transitions. [2022-09-16 11:55:30,246 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.732191514207863 [2022-09-16 11:55:30,246 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1881 transitions. [2022-09-16 11:55:30,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1881 transitions. [2022-09-16 11:55:30,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:30,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1881 transitions. [2022-09-16 11:55:30,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 268.7142857142857) internal successors, (1881), 7 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:30,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:30,251 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:30,251 INFO L175 Difference]: Start difference. First operand has 391 places, 534 transitions, 2671 flow. Second operand 7 states and 1881 transitions. [2022-09-16 11:55:30,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 550 transitions, 3253 flow [2022-09-16 11:55:30,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 550 transitions, 3247 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:55:30,271 INFO L231 Difference]: Finished difference. Result has 395 places, 534 transitions, 2690 flow [2022-09-16 11:55:30,272 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2690, PETRI_PLACES=395, PETRI_TRANSITIONS=534} [2022-09-16 11:55:30,274 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 66 predicate places. [2022-09-16 11:55:30,274 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 534 transitions, 2690 flow [2022-09-16 11:55:30,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:30,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:30,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:30,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:55:30,275 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:55:30,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:30,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1658108303, now seen corresponding path program 1 times [2022-09-16 11:55:30,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:30,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072623420] [2022-09-16 11:55:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:30,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:30,349 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 11:55:30,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:30,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072623420] [2022-09-16 11:55:30,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072623420] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:30,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:30,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:55:30,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327779769] [2022-09-16 11:55:30,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:30,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:55:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:55:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:55:30,351 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 367 [2022-09-16 11:55:30,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 534 transitions, 2690 flow. Second operand has 6 states, 6 states have (on average 261.6666666666667) internal successors, (1570), 6 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:30,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:30,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 367 [2022-09-16 11:55:30,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:34,756 INFO L130 PetriNetUnfolder]: 11296/22463 cut-off events. [2022-09-16 11:55:34,757 INFO L131 PetriNetUnfolder]: For 7861/7891 co-relation queries the response was YES. [2022-09-16 11:55:34,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49470 conditions, 22463 events. 11296/22463 cut-off events. For 7861/7891 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 163598 event pairs, 7015 based on Foata normal form. 1005/19528 useless extension candidates. Maximal degree in co-relation 45736. Up to 15459 conditions per place. [2022-09-16 11:55:34,952 INFO L137 encePairwiseOnDemand]: 354/367 looper letters, 399 selfloop transitions, 29 changer transitions 3/712 dead transitions. [2022-09-16 11:55:34,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 712 transitions, 4662 flow [2022-09-16 11:55:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:55:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:55:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2423 transitions. [2022-09-16 11:55:34,957 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7335755373902513 [2022-09-16 11:55:34,957 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2423 transitions. [2022-09-16 11:55:34,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2423 transitions. [2022-09-16 11:55:34,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:34,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2423 transitions. [2022-09-16 11:55:34,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 269.22222222222223) internal successors, (2423), 9 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:34,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 367.0) internal successors, (3670), 10 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:34,978 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 367.0) internal successors, (3670), 10 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:34,978 INFO L175 Difference]: Start difference. First operand has 395 places, 534 transitions, 2690 flow. Second operand 9 states and 2423 transitions. [2022-09-16 11:55:34,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 712 transitions, 4662 flow [2022-09-16 11:55:35,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 712 transitions, 4642 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:55:35,073 INFO L231 Difference]: Finished difference. Result has 401 places, 535 transitions, 2754 flow [2022-09-16 11:55:35,074 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2754, PETRI_PLACES=401, PETRI_TRANSITIONS=535} [2022-09-16 11:55:35,074 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 72 predicate places. [2022-09-16 11:55:35,075 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 535 transitions, 2754 flow [2022-09-16 11:55:35,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.6666666666667) internal successors, (1570), 6 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:35,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:35,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:35,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:55:35,075 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:55:35,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:35,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1559043444, now seen corresponding path program 1 times [2022-09-16 11:55:35,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:35,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688112284] [2022-09-16 11:55:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:35,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:55:35,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:35,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688112284] [2022-09-16 11:55:35,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688112284] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:35,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:35,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:35,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287132208] [2022-09-16 11:55:35,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:35,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:35,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:35,226 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 367 [2022-09-16 11:55:35,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 535 transitions, 2754 flow. Second operand has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:35,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:35,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 367 [2022-09-16 11:55:35,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:39,384 INFO L130 PetriNetUnfolder]: 11548/24059 cut-off events. [2022-09-16 11:55:39,384 INFO L131 PetriNetUnfolder]: For 10567/10597 co-relation queries the response was YES. [2022-09-16 11:55:39,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55392 conditions, 24059 events. 11548/24059 cut-off events. For 10567/10597 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 179351 event pairs, 2871 based on Foata normal form. 924/21127 useless extension candidates. Maximal degree in co-relation 51248. Up to 13304 conditions per place. [2022-09-16 11:55:39,644 INFO L137 encePairwiseOnDemand]: 359/367 looper letters, 40 selfloop transitions, 6 changer transitions 0/550 dead transitions. [2022-09-16 11:55:39,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 550 transitions, 2897 flow [2022-09-16 11:55:39,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:55:39,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:55:39,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1239 transitions. [2022-09-16 11:55:39,645 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8440054495912807 [2022-09-16 11:55:39,645 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1239 transitions. [2022-09-16 11:55:39,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1239 transitions. [2022-09-16 11:55:39,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:39,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1239 transitions. [2022-09-16 11:55:39,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:39,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:39,650 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:39,650 INFO L175 Difference]: Start difference. First operand has 401 places, 535 transitions, 2754 flow. Second operand 4 states and 1239 transitions. [2022-09-16 11:55:39,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 550 transitions, 2897 flow [2022-09-16 11:55:39,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 550 transitions, 2866 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:55:39,674 INFO L231 Difference]: Finished difference. Result has 401 places, 536 transitions, 2747 flow [2022-09-16 11:55:39,676 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2747, PETRI_PLACES=401, PETRI_TRANSITIONS=536} [2022-09-16 11:55:39,676 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 72 predicate places. [2022-09-16 11:55:39,676 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 536 transitions, 2747 flow [2022-09-16 11:55:39,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:39,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:39,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:39,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:55:39,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:55:39,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:39,677 INFO L85 PathProgramCache]: Analyzing trace with hash -269408834, now seen corresponding path program 1 times [2022-09-16 11:55:39,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:39,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224804183] [2022-09-16 11:55:39,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:39,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:55:39,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:39,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224804183] [2022-09-16 11:55:39,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224804183] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:39,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:39,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:39,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937026291] [2022-09-16 11:55:39,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:39,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:39,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:39,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:39,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:39,990 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 367 [2022-09-16 11:55:39,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 536 transitions, 2747 flow. Second operand has 4 states, 4 states have (on average 301.25) internal successors, (1205), 4 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:39,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:39,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 367 [2022-09-16 11:55:39,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:44,913 INFO L130 PetriNetUnfolder]: 13879/28377 cut-off events. [2022-09-16 11:55:44,913 INFO L131 PetriNetUnfolder]: For 14811/14841 co-relation queries the response was YES. [2022-09-16 11:55:45,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69319 conditions, 28377 events. 13879/28377 cut-off events. For 14811/14841 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 221171 event pairs, 3401 based on Foata normal form. 589/25027 useless extension candidates. Maximal degree in co-relation 64171. Up to 13429 conditions per place. [2022-09-16 11:55:45,207 INFO L137 encePairwiseOnDemand]: 359/367 looper letters, 47 selfloop transitions, 6 changer transitions 4/555 dead transitions. [2022-09-16 11:55:45,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 555 transitions, 2926 flow [2022-09-16 11:55:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:55:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:55:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1244 transitions. [2022-09-16 11:55:45,208 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8474114441416893 [2022-09-16 11:55:45,208 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1244 transitions. [2022-09-16 11:55:45,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1244 transitions. [2022-09-16 11:55:45,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:45,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1244 transitions. [2022-09-16 11:55:45,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:45,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:45,211 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:45,211 INFO L175 Difference]: Start difference. First operand has 401 places, 536 transitions, 2747 flow. Second operand 4 states and 1244 transitions. [2022-09-16 11:55:45,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 555 transitions, 2926 flow [2022-09-16 11:55:45,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 555 transitions, 2916 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:55:45,233 INFO L231 Difference]: Finished difference. Result has 403 places, 536 transitions, 2752 flow [2022-09-16 11:55:45,234 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2752, PETRI_PLACES=403, PETRI_TRANSITIONS=536} [2022-09-16 11:55:45,234 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 74 predicate places. [2022-09-16 11:55:45,235 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 536 transitions, 2752 flow [2022-09-16 11:55:45,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 301.25) internal successors, (1205), 4 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:45,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:45,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:45,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:55:45,235 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:55:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash -602099460, now seen corresponding path program 1 times [2022-09-16 11:55:45,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:45,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803463207] [2022-09-16 11:55:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:45,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:55:45,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:45,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803463207] [2022-09-16 11:55:45,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803463207] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:45,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467934121] [2022-09-16 11:55:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:45,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:45,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:45,316 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 11:55:45,374 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 11:55:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:45,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:45,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:55:45,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:45,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467934121] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:45,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:45,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-09-16 11:55:45,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067383432] [2022-09-16 11:55:45,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:45,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:45,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:45,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:45,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:55:45,578 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 367 [2022-09-16 11:55:45,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 536 transitions, 2752 flow. Second operand has 4 states, 4 states have (on average 301.5) internal successors, (1206), 4 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:45,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:45,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 367 [2022-09-16 11:55:45,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:49,423 INFO L130 PetriNetUnfolder]: 8952/20035 cut-off events. [2022-09-16 11:55:49,423 INFO L131 PetriNetUnfolder]: For 12128/12156 co-relation queries the response was YES. [2022-09-16 11:55:49,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48639 conditions, 20035 events. 8952/20035 cut-off events. For 12128/12156 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 154049 event pairs, 5320 based on Foata normal form. 392/19167 useless extension candidates. Maximal degree in co-relation 44923. Up to 12900 conditions per place. [2022-09-16 11:55:49,599 INFO L137 encePairwiseOnDemand]: 362/367 looper letters, 27 selfloop transitions, 3 changer transitions 0/534 dead transitions. [2022-09-16 11:55:49,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 534 transitions, 2802 flow [2022-09-16 11:55:49,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:55:49,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:55:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1225 transitions. [2022-09-16 11:55:49,600 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8344686648501363 [2022-09-16 11:55:49,600 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1225 transitions. [2022-09-16 11:55:49,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1225 transitions. [2022-09-16 11:55:49,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:49,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1225 transitions. [2022-09-16 11:55:49,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.25) internal successors, (1225), 4 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:49,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:49,712 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:49,713 INFO L175 Difference]: Start difference. First operand has 403 places, 536 transitions, 2752 flow. Second operand 4 states and 1225 transitions. [2022-09-16 11:55:49,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 534 transitions, 2802 flow [2022-09-16 11:55:49,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 534 transitions, 2786 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-09-16 11:55:49,747 INFO L231 Difference]: Finished difference. Result has 400 places, 534 transitions, 2732 flow [2022-09-16 11:55:49,748 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2732, PETRI_PLACES=400, PETRI_TRANSITIONS=534} [2022-09-16 11:55:49,749 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 71 predicate places. [2022-09-16 11:55:49,749 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 534 transitions, 2732 flow [2022-09-16 11:55:49,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 301.5) internal successors, (1206), 4 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:49,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:49,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:49,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:49,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:49,964 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:55:49,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1360051473, now seen corresponding path program 1 times [2022-09-16 11:55:49,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:49,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277108801] [2022-09-16 11:55:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:49,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:55:50,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:50,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277108801] [2022-09-16 11:55:50,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277108801] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:50,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:50,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:55:50,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228243012] [2022-09-16 11:55:50,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:50,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:55:50,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:50,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:55:50,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:55:50,056 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 367 [2022-09-16 11:55:50,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 534 transitions, 2732 flow. Second operand has 6 states, 6 states have (on average 263.8333333333333) internal successors, (1583), 6 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:50,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:50,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 367 [2022-09-16 11:55:50,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:55,446 INFO L130 PetriNetUnfolder]: 11222/28821 cut-off events. [2022-09-16 11:55:55,446 INFO L131 PetriNetUnfolder]: For 14950/15006 co-relation queries the response was YES. [2022-09-16 11:55:55,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65623 conditions, 28821 events. 11222/28821 cut-off events. For 14950/15006 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 259360 event pairs, 6818 based on Foata normal form. 420/27477 useless extension candidates. Maximal degree in co-relation 60515. Up to 13418 conditions per place. [2022-09-16 11:55:55,738 INFO L137 encePairwiseOnDemand]: 356/367 looper letters, 324 selfloop transitions, 30 changer transitions 23/658 dead transitions. [2022-09-16 11:55:55,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 658 transitions, 4218 flow [2022-09-16 11:55:55,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:55:55,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:55:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2414 transitions. [2022-09-16 11:55:55,740 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7308507417499243 [2022-09-16 11:55:55,740 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2414 transitions. [2022-09-16 11:55:55,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2414 transitions. [2022-09-16 11:55:55,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:55,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2414 transitions. [2022-09-16 11:55:55,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 268.22222222222223) internal successors, (2414), 9 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:55,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 367.0) internal successors, (3670), 10 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:55,744 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 367.0) internal successors, (3670), 10 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:55,744 INFO L175 Difference]: Start difference. First operand has 400 places, 534 transitions, 2732 flow. Second operand 9 states and 2414 transitions. [2022-09-16 11:55:55,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 658 transitions, 4218 flow [2022-09-16 11:55:55,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 658 transitions, 4212 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:55:55,771 INFO L231 Difference]: Finished difference. Result has 406 places, 535 transitions, 2795 flow [2022-09-16 11:55:55,772 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2795, PETRI_PLACES=406, PETRI_TRANSITIONS=535} [2022-09-16 11:55:55,772 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 77 predicate places. [2022-09-16 11:55:55,772 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 535 transitions, 2795 flow [2022-09-16 11:55:55,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 263.8333333333333) internal successors, (1583), 6 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:55,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:55,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:55,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:55:55,773 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:55:55,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:55,773 INFO L85 PathProgramCache]: Analyzing trace with hash -24854388, now seen corresponding path program 1 times [2022-09-16 11:55:55,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:55,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13739856] [2022-09-16 11:55:55,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:55,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:55:55,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:55,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13739856] [2022-09-16 11:55:55,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13739856] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:55,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152178275] [2022-09-16 11:55:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:55,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:55,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:55,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:55,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:55:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:56,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:56,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-16 11:55:56,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:56,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152178275] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:56,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:56,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-09-16 11:55:56,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079994660] [2022-09-16 11:55:56,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:56,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:56,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:56,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:56,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:55:56,189 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 367 [2022-09-16 11:55:56,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 535 transitions, 2795 flow. Second operand has 4 states, 4 states have (on average 302.25) internal successors, (1209), 4 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:56,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:56,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 367 [2022-09-16 11:55:56,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:01,049 INFO L130 PetriNetUnfolder]: 8716/25405 cut-off events. [2022-09-16 11:56:01,050 INFO L131 PetriNetUnfolder]: For 11793/11849 co-relation queries the response was YES. [2022-09-16 11:56:01,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54795 conditions, 25405 events. 8716/25405 cut-off events. For 11793/11849 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 238101 event pairs, 5250 based on Foata normal form. 420/24635 useless extension candidates. Maximal degree in co-relation 50479. Up to 13290 conditions per place. [2022-09-16 11:56:01,260 INFO L137 encePairwiseOnDemand]: 362/367 looper letters, 9 selfloop transitions, 3 changer transitions 89/533 dead transitions. [2022-09-16 11:56:01,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 533 transitions, 2853 flow [2022-09-16 11:56:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:56:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:56:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1223 transitions. [2022-09-16 11:56:01,261 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8331062670299727 [2022-09-16 11:56:01,262 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1223 transitions. [2022-09-16 11:56:01,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1223 transitions. [2022-09-16 11:56:01,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:01,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1223 transitions. [2022-09-16 11:56:01,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 305.75) internal successors, (1223), 4 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:01,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:01,264 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:01,264 INFO L175 Difference]: Start difference. First operand has 406 places, 535 transitions, 2795 flow. Second operand 4 states and 1223 transitions. [2022-09-16 11:56:01,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 533 transitions, 2853 flow [2022-09-16 11:56:01,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 533 transitions, 2813 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:56:01,287 INFO L231 Difference]: Finished difference. Result has 403 places, 444 transitions, 2529 flow [2022-09-16 11:56:01,288 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2747, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2529, PETRI_PLACES=403, PETRI_TRANSITIONS=444} [2022-09-16 11:56:01,288 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 74 predicate places. [2022-09-16 11:56:01,289 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 444 transitions, 2529 flow [2022-09-16 11:56:01,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 302.25) internal successors, (1209), 4 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:01,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:01,289 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:01,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-09-16 11:56:01,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:01,501 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:56:01,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:01,504 INFO L85 PathProgramCache]: Analyzing trace with hash -943227666, now seen corresponding path program 2 times [2022-09-16 11:56:01,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:01,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969964796] [2022-09-16 11:56:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:01,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:01,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:01,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969964796] [2022-09-16 11:56:01,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969964796] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:01,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361735911] [2022-09-16 11:56:01,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:56:01,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:01,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:01,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:56:01,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:56:01,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:56:01,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:56:01,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:56:01,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-09-16 11:56:02,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:56:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-09-16 11:56:02,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361735911] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:56:02,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:56:02,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-09-16 11:56:02,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74868529] [2022-09-16 11:56:02,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:56:02,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-09-16 11:56:02,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:02,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-09-16 11:56:02,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-09-16 11:56:02,390 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 367 [2022-09-16 11:56:02,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 444 transitions, 2529 flow. Second operand has 38 states, 38 states have (on average 235.76315789473685) internal successors, (8959), 38 states have internal predecessors, (8959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:02,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:02,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 367 [2022-09-16 11:56:02,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:06,283 INFO L130 PetriNetUnfolder]: 120/4603 cut-off events. [2022-09-16 11:56:06,283 INFO L131 PetriNetUnfolder]: For 8805/8805 co-relation queries the response was YES. [2022-09-16 11:56:06,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10829 conditions, 4603 events. 120/4603 cut-off events. For 8805/8805 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 33868 event pairs, 0 based on Foata normal form. 28/4631 useless extension candidates. Maximal degree in co-relation 8490. Up to 493 conditions per place. [2022-09-16 11:56:06,296 INFO L137 encePairwiseOnDemand]: 333/367 looper letters, 346 selfloop transitions, 351 changer transitions 0/835 dead transitions. [2022-09-16 11:56:06,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 835 transitions, 5453 flow [2022-09-16 11:56:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-09-16 11:56:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2022-09-16 11:56:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 32023 transitions. [2022-09-16 11:56:06,316 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6463417095569685 [2022-09-16 11:56:06,316 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 32023 transitions. [2022-09-16 11:56:06,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 32023 transitions. [2022-09-16 11:56:06,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:06,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 32023 transitions. [2022-09-16 11:56:06,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 237.2074074074074) internal successors, (32023), 135 states have internal predecessors, (32023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:06,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 367.0) internal successors, (49912), 136 states have internal predecessors, (49912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:06,392 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 367.0) internal successors, (49912), 136 states have internal predecessors, (49912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:06,392 INFO L175 Difference]: Start difference. First operand has 403 places, 444 transitions, 2529 flow. Second operand 135 states and 32023 transitions. [2022-09-16 11:56:06,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 835 transitions, 5453 flow [2022-09-16 11:56:06,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 835 transitions, 5356 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-16 11:56:06,419 INFO L231 Difference]: Finished difference. Result has 449 places, 557 transitions, 3832 flow [2022-09-16 11:56:06,419 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2482, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=3832, PETRI_PLACES=449, PETRI_TRANSITIONS=557} [2022-09-16 11:56:06,419 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 120 predicate places. [2022-09-16 11:56:06,420 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 557 transitions, 3832 flow [2022-09-16 11:56:06,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 235.76315789473685) internal successors, (8959), 38 states have internal predecessors, (8959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:06,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:06,421 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:06,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-09-16 11:56:06,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:56:06,636 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:56:06,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:06,636 INFO L85 PathProgramCache]: Analyzing trace with hash 9483449, now seen corresponding path program 1 times [2022-09-16 11:56:06,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:06,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609325151] [2022-09-16 11:56:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:06,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:07,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:07,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609325151] [2022-09-16 11:56:07,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609325151] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:07,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738968998] [2022-09-16 11:56:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:07,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:07,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:07,009 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:56:07,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:56:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:07,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-16 11:56:07,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:07,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:56:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:08,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738968998] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:56:08,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:56:08,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 71 [2022-09-16 11:56:08,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953382466] [2022-09-16 11:56:08,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:56:08,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-09-16 11:56:08,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:08,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-09-16 11:56:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2022-09-16 11:56:08,209 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-09-16 11:56:08,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 557 transitions, 3832 flow. Second operand has 72 states, 72 states have (on average 260.44444444444446) internal successors, (18752), 72 states have internal predecessors, (18752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:08,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:08,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-09-16 11:56:08,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:11,480 INFO L130 PetriNetUnfolder]: 106/3158 cut-off events. [2022-09-16 11:56:11,480 INFO L131 PetriNetUnfolder]: For 10064/10064 co-relation queries the response was YES. [2022-09-16 11:56:11,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7768 conditions, 3158 events. 106/3158 cut-off events. For 10064/10064 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 15344 event pairs, 0 based on Foata normal form. 36/3194 useless extension candidates. Maximal degree in co-relation 5439. Up to 339 conditions per place. [2022-09-16 11:56:11,493 INFO L137 encePairwiseOnDemand]: 342/367 looper letters, 675 selfloop transitions, 518 changer transitions 0/1421 dead transitions. [2022-09-16 11:56:11,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 1421 transitions, 11697 flow [2022-09-16 11:56:11,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-09-16 11:56:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2022-09-16 11:56:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 27957 transitions. [2022-09-16 11:56:11,508 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7324722280444351 [2022-09-16 11:56:11,508 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 27957 transitions. [2022-09-16 11:56:11,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 27957 transitions. [2022-09-16 11:56:11,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:11,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 27957 transitions. [2022-09-16 11:56:11,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 268.8173076923077) internal successors, (27957), 104 states have internal predecessors, (27957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:11,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 367.0) internal successors, (38535), 105 states have internal predecessors, (38535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:11,569 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 367.0) internal successors, (38535), 105 states have internal predecessors, (38535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:11,570 INFO L175 Difference]: Start difference. First operand has 449 places, 557 transitions, 3832 flow. Second operand 104 states and 27957 transitions. [2022-09-16 11:56:11,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 1421 transitions, 11697 flow [2022-09-16 11:56:11,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 1421 transitions, 10875 flow, removed 257 selfloop flow, removed 29 redundant places. [2022-09-16 11:56:11,610 INFO L231 Difference]: Finished difference. Result has 542 places, 833 transitions, 7353 flow [2022-09-16 11:56:11,611 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=3481, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=7353, PETRI_PLACES=542, PETRI_TRANSITIONS=833} [2022-09-16 11:56:11,611 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 213 predicate places. [2022-09-16 11:56:11,612 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 833 transitions, 7353 flow [2022-09-16 11:56:11,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 260.44444444444446) internal successors, (18752), 72 states have internal predecessors, (18752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:11,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:11,615 INFO L208 CegarLoopForPetriNet]: trace histogram [35, 35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:11,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-09-16 11:56:11,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:56:11,834 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:56:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1364743943, now seen corresponding path program 2 times [2022-09-16 11:56:11,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:11,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211696190] [2022-09-16 11:56:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:11,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:13,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:13,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211696190] [2022-09-16 11:56:13,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211696190] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:13,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559193570] [2022-09-16 11:56:13,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:56:13,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:13,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:13,079 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:56:13,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:56:13,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:56:13,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:56:13,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:56:13,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-09-16 11:56:13,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:56:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-09-16 11:56:14,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559193570] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:56:14,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:56:14,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 7, 7] total 77 [2022-09-16 11:56:14,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113210023] [2022-09-16 11:56:14,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:56:14,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-09-16 11:56:14,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:14,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-09-16 11:56:14,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1413, Invalid=4593, Unknown=0, NotChecked=0, Total=6006 [2022-09-16 11:56:14,101 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 367 [2022-09-16 11:56:14,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 833 transitions, 7353 flow. Second operand has 78 states, 78 states have (on average 235.73076923076923) internal successors, (18387), 78 states have internal predecessors, (18387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:14,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:14,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 367 [2022-09-16 11:56:14,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:22,812 INFO L130 PetriNetUnfolder]: 112/3324 cut-off events. [2022-09-16 11:56:22,812 INFO L131 PetriNetUnfolder]: For 10740/10740 co-relation queries the response was YES. [2022-09-16 11:56:22,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8751 conditions, 3324 events. 112/3324 cut-off events. For 10740/10740 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 16228 event pairs, 0 based on Foata normal form. 4/3328 useless extension candidates. Maximal degree in co-relation 7889. Up to 339 conditions per place. [2022-09-16 11:56:22,826 INFO L137 encePairwiseOnDemand]: 334/367 looper letters, 725 selfloop transitions, 771 changer transitions 0/1666 dead transitions. [2022-09-16 11:56:22,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 835 places, 1666 transitions, 14133 flow [2022-09-16 11:56:22,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2022-09-16 11:56:22,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2022-09-16 11:56:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 69940 transitions. [2022-09-16 11:56:22,856 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6460074816422666 [2022-09-16 11:56:22,856 INFO L72 ComplementDD]: Start complementDD. Operand 295 states and 69940 transitions. [2022-09-16 11:56:22,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 295 states and 69940 transitions. [2022-09-16 11:56:22,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:22,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 295 states and 69940 transitions. [2022-09-16 11:56:22,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 296 states, 295 states have (on average 237.08474576271186) internal successors, (69940), 295 states have internal predecessors, (69940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:22,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 296 states, 296 states have (on average 367.0) internal successors, (108632), 296 states have internal predecessors, (108632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:23,018 INFO L81 ComplementDD]: Finished complementDD. Result has 296 states, 296 states have (on average 367.0) internal successors, (108632), 296 states have internal predecessors, (108632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:23,019 INFO L175 Difference]: Start difference. First operand has 542 places, 833 transitions, 7353 flow. Second operand 295 states and 69940 transitions. [2022-09-16 11:56:23,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 835 places, 1666 transitions, 14133 flow [2022-09-16 11:56:23,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 790 places, 1666 transitions, 13722 flow, removed 3 selfloop flow, removed 45 redundant places. [2022-09-16 11:56:23,078 INFO L231 Difference]: Finished difference. Result has 794 places, 1041 transitions, 9539 flow [2022-09-16 11:56:23,079 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=6876, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=572, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=295, PETRI_FLOW=9539, PETRI_PLACES=794, PETRI_TRANSITIONS=1041} [2022-09-16 11:56:23,079 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 465 predicate places. [2022-09-16 11:56:23,079 INFO L495 AbstractCegarLoop]: Abstraction has has 794 places, 1041 transitions, 9539 flow [2022-09-16 11:56:23,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 235.73076923076923) internal successors, (18387), 78 states have internal predecessors, (18387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:23,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:23,081 INFO L208 CegarLoopForPetriNet]: trace histogram [37, 37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:23,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:56:23,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-09-16 11:56:23,299 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:56:23,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash -964195989, now seen corresponding path program 1 times [2022-09-16 11:56:23,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:23,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576288774] [2022-09-16 11:56:23,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:23,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:24,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:24,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576288774] [2022-09-16 11:56:24,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576288774] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:24,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442919892] [2022-09-16 11:56:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:24,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:24,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:24,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:56:24,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:56:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:24,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 75 conjunts are in the unsatisfiable core [2022-09-16 11:56:24,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:24,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:24,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:56:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:27,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442919892] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:56:27,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:56:27,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 151 [2022-09-16 11:56:27,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187768563] [2022-09-16 11:56:27,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:56:27,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2022-09-16 11:56:27,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:27,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2022-09-16 11:56:27,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17101, Unknown=0, NotChecked=0, Total=22952 [2022-09-16 11:56:27,980 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-09-16 11:56:27,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 794 places, 1041 transitions, 9539 flow. Second operand has 152 states, 152 states have (on average 260.49342105263156) internal successors, (39595), 152 states have internal predecessors, (39595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:27,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:27,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-09-16 11:56:27,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:44,758 INFO L130 PetriNetUnfolder]: 226/6637 cut-off events. [2022-09-16 11:56:44,758 INFO L131 PetriNetUnfolder]: For 45259/45259 co-relation queries the response was YES. [2022-09-16 11:56:44,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19274 conditions, 6637 events. 226/6637 cut-off events. For 45259/45259 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 34027 event pairs, 0 based on Foata normal form. 38/6675 useless extension candidates. Maximal degree in co-relation 13695. Up to 720 conditions per place. [2022-09-16 11:56:44,799 INFO L137 encePairwiseOnDemand]: 343/367 looper letters, 1434 selfloop transitions, 1118 changer transitions 0/2907 dead transitions. [2022-09-16 11:56:44,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1017 places, 2907 transitions, 29651 flow [2022-09-16 11:56:44,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-09-16 11:56:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2022-09-16 11:56:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 60158 transitions. [2022-09-16 11:56:44,825 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7317779291553134 [2022-09-16 11:56:44,825 INFO L72 ComplementDD]: Start complementDD. Operand 224 states and 60158 transitions. [2022-09-16 11:56:44,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 60158 transitions. [2022-09-16 11:56:44,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:44,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 224 states and 60158 transitions. [2022-09-16 11:56:44,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 225 states, 224 states have (on average 268.5625) internal successors, (60158), 224 states have internal predecessors, (60158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:44,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 225 states, 225 states have (on average 367.0) internal successors, (82575), 225 states have internal predecessors, (82575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:44,938 INFO L81 ComplementDD]: Finished complementDD. Result has 225 states, 225 states have (on average 367.0) internal successors, (82575), 225 states have internal predecessors, (82575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:44,938 INFO L175 Difference]: Start difference. First operand has 794 places, 1041 transitions, 9539 flow. Second operand 224 states and 60158 transitions. [2022-09-16 11:56:44,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1017 places, 2907 transitions, 29651 flow [2022-09-16 11:56:45,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 959 places, 2907 transitions, 28032 flow, removed 482 selfloop flow, removed 58 redundant places. [2022-09-16 11:56:45,077 INFO L231 Difference]: Finished difference. Result has 998 places, 1617 transitions, 18530 flow [2022-09-16 11:56:45,078 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=8911, PETRI_DIFFERENCE_MINUEND_PLACES=736, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1041, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=553, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=224, PETRI_FLOW=18530, PETRI_PLACES=998, PETRI_TRANSITIONS=1617} [2022-09-16 11:56:45,079 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 669 predicate places. [2022-09-16 11:56:45,079 INFO L495 AbstractCegarLoop]: Abstraction has has 998 places, 1617 transitions, 18530 flow [2022-09-16 11:56:45,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 260.49342105263156) internal successors, (39595), 152 states have internal predecessors, (39595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:45,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:45,084 INFO L208 CegarLoopForPetriNet]: trace histogram [75, 75, 75, 75, 75, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:45,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-09-16 11:56:45,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-09-16 11:56:45,304 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:56:45,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:45,304 INFO L85 PathProgramCache]: Analyzing trace with hash -899511349, now seen corresponding path program 2 times [2022-09-16 11:56:45,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:45,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374604150] [2022-09-16 11:56:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:45,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:49,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:49,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374604150] [2022-09-16 11:56:49,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374604150] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:49,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430507732] [2022-09-16 11:56:49,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:56:49,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:49,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:49,321 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:56:49,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 11:56:49,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:56:49,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:56:49,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:56:49,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 24383 trivial. 0 not checked. [2022-09-16 11:56:50,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:56:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 24383 trivial. 0 not checked. [2022-09-16 11:56:51,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430507732] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:56:51,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:56:51,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 7, 7] total 157 [2022-09-16 11:56:51,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686725917] [2022-09-16 11:56:51,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:56:51,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2022-09-16 11:56:51,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2022-09-16 11:56:51,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6013, Invalid=18793, Unknown=0, NotChecked=0, Total=24806 [2022-09-16 11:56:51,373 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 367 [2022-09-16 11:56:51,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 998 places, 1617 transitions, 18530 flow. Second operand has 158 states, 158 states have (on average 235.66455696202533) internal successors, (37235), 158 states have internal predecessors, (37235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:51,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:51,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 367 [2022-09-16 11:56:51,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:33,118 INFO L130 PetriNetUnfolder]: 232/6803 cut-off events. [2022-09-16 11:57:33,118 INFO L131 PetriNetUnfolder]: For 32520/32520 co-relation queries the response was YES. [2022-09-16 11:57:33,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20933 conditions, 6803 events. 232/6803 cut-off events. For 32520/32520 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 34967 event pairs, 0 based on Foata normal form. 2/6805 useless extension candidates. Maximal degree in co-relation 19926. Up to 698 conditions per place. [2022-09-16 11:57:33,172 INFO L137 encePairwiseOnDemand]: 335/367 looper letters, 0 selfloop transitions, 0 changer transitions 3337/3337 dead transitions. [2022-09-16 11:57:33,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1610 places, 3337 transitions, 34462 flow [2022-09-16 11:57:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 614 states. [2022-09-16 11:57:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2022-09-16 11:57:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 145545 transitions. [2022-09-16 11:57:33,232 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.645896386761221 [2022-09-16 11:57:33,232 INFO L72 ComplementDD]: Start complementDD. Operand 614 states and 145545 transitions. [2022-09-16 11:57:33,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 614 states and 145545 transitions. [2022-09-16 11:57:33,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:33,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 614 states and 145545 transitions. [2022-09-16 11:57:33,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 615 states, 614 states have (on average 237.04397394136808) internal successors, (145545), 614 states have internal predecessors, (145545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:33,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 615 states, 615 states have (on average 367.0) internal successors, (225705), 615 states have internal predecessors, (225705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:33,540 INFO L81 ComplementDD]: Finished complementDD. Result has 615 states, 615 states have (on average 367.0) internal successors, (225705), 615 states have internal predecessors, (225705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:33,540 INFO L175 Difference]: Start difference. First operand has 998 places, 1617 transitions, 18530 flow. Second operand 614 states and 145545 transitions. [2022-09-16 11:57:33,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1610 places, 3337 transitions, 34462 flow [2022-09-16 11:57:33,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1431 places, 3337 transitions, 32931 flow, removed 3 selfloop flow, removed 179 redundant places. [2022-09-16 11:57:33,774 INFO L231 Difference]: Finished difference. Result has 1431 places, 0 transitions, 0 flow [2022-09-16 11:57:33,776 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=16853, PETRI_DIFFERENCE_MINUEND_PLACES=818, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=614, PETRI_FLOW=0, PETRI_PLACES=1431, PETRI_TRANSITIONS=0} [2022-09-16 11:57:33,776 INFO L287 CegarLoopForPetriNet]: 329 programPoint places, 1102 predicate places. [2022-09-16 11:57:33,776 INFO L495 AbstractCegarLoop]: Abstraction has has 1431 places, 0 transitions, 0 flow [2022-09-16 11:57:33,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 235.66455696202533) internal successors, (37235), 158 states have internal predecessors, (37235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:33,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 60 remaining) [2022-09-16 11:57:33,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 60 remaining) [2022-09-16 11:57:33,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 60 remaining) [2022-09-16 11:57:33,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 60 remaining) [2022-09-16 11:57:33,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 60 remaining) [2022-09-16 11:57:33,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 60 remaining) [2022-09-16 11:57:33,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 60 remaining) [2022-09-16 11:57:33,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 60 remaining) [2022-09-16 11:57:33,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 60 remaining) [2022-09-16 11:57:33,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 60 remaining) [2022-09-16 11:57:33,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 60 remaining) [2022-09-16 11:57:33,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 60 remaining) [2022-09-16 11:57:33,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 60 remaining) [2022-09-16 11:57:33,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-09-16 11:57:34,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:34,001 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:34,006 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:57:34,006 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:57:34,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:57:34 BasicIcfg [2022-09-16 11:57:34,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:57:34,010 INFO L158 Benchmark]: Toolchain (without parser) took 161840.77ms. Allocated memory was 206.6MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 152.1MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 5.8GB. Max. memory is 8.0GB. [2022-09-16 11:57:34,010 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 206.6MB. Free memory is still 168.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:57:34,010 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.52ms. Allocated memory was 206.6MB in the beginning and 331.4MB in the end (delta: 124.8MB). Free memory was 151.8MB in the beginning and 304.3MB in the end (delta: -152.5MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-09-16 11:57:34,010 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.30ms. Allocated memory is still 331.4MB. Free memory was 304.3MB in the beginning and 300.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-09-16 11:57:34,010 INFO L158 Benchmark]: Boogie Preprocessor took 57.51ms. Allocated memory is still 331.4MB. Free memory was 300.7MB in the beginning and 298.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:57:34,010 INFO L158 Benchmark]: RCFGBuilder took 1005.87ms. Allocated memory is still 331.4MB. Free memory was 298.0MB in the beginning and 206.2MB in the end (delta: 91.8MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. [2022-09-16 11:57:34,011 INFO L158 Benchmark]: TraceAbstraction took 160365.61ms. Allocated memory was 331.4MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 205.8MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 5.7GB. Max. memory is 8.0GB. [2022-09-16 11:57:34,012 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 206.6MB. Free memory is still 168.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 345.52ms. Allocated memory was 206.6MB in the beginning and 331.4MB in the end (delta: 124.8MB). Free memory was 151.8MB in the beginning and 304.3MB in the end (delta: -152.5MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.30ms. Allocated memory is still 331.4MB. Free memory was 304.3MB in the beginning and 300.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 57.51ms. Allocated memory is still 331.4MB. Free memory was 300.7MB in the beginning and 298.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1005.87ms. Allocated memory is still 331.4MB. Free memory was 298.0MB in the beginning and 206.2MB in the end (delta: 91.8MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. * TraceAbstraction took 160365.61ms. Allocated memory was 331.4MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 205.8MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 5.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 134]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 134]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 140]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 140]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 407 locations, 60 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 160.2s, OverallIterations: 19, TraceHistogramMax: 75, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 138.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38654 SdHoareTripleChecker+Valid, 10.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38654 mSDsluCounter, 3308 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4355 mSDsCounter, 11067 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15574 IncrementalHoareTripleChecker+Invalid, 26641 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11067 mSolverCounterUnsat, 421 mSDtfsCounter, 15574 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7952 GetRequests, 5982 SyntacticMatches, 20 SemanticMatches, 1950 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316889 ImplicationChecksByTransitivity, 56.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18530occurred in iteration=18, InterpolantAutomatonStates: 1549, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 7988 NumberOfCodeBlocks, 6854 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 10582 ConstructedInterpolants, 0 QuantifiedInterpolants, 25264 SizeOfPredicates, 152 NumberOfNonLiveVariables, 4920 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 39 InterpolantComputations, 11 PerfectInterpolantSequences, 60740/114714 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 32 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:57:34,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...