/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-counter-fun.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:55:03,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:55:03,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:55:03,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:55:03,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:55:03,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:55:03,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:55:03,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:55:03,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:55:03,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:55:03,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:55:03,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:55:03,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:55:03,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:55:03,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:55:03,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:55:03,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:55:03,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:55:03,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:55:03,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:55:03,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:55:03,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:55:03,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:55:03,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:55:03,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:55:03,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:55:03,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:55:03,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:55:03,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:55:03,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:55:03,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:55:03,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:55:03,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:55:03,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:55:03,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:55:03,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:55:03,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:55:03,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:55:03,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:55:03,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:55:03,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:55:03,179 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 11:55:03,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:55:03,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:55:03,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:55:03,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:55:03,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:55:03,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:55:03,204 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:55:03,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:55:03,204 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:55:03,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:55:03,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:55:03,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:55:03,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:55:03,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:55:03,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:55:03,205 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:55:03,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:55:03,205 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:55:03,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:55:03,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:55:03,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:55:03,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:55:03,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:55:03,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:55:03,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:55:03,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:55:03,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:55:03,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:55:03,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:55:03,206 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:55:03,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:55:03,207 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:55:03,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:55:03,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:55:03,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:55:03,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:55:03,433 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:55:03,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c [2022-09-16 11:55:03,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c2e71ac6/dfad1a54722e490da2e7252b68241f13/FLAG3d200045a [2022-09-16 11:55:03,880 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:55:03,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c [2022-09-16 11:55:03,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c2e71ac6/dfad1a54722e490da2e7252b68241f13/FLAG3d200045a [2022-09-16 11:55:04,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c2e71ac6/dfad1a54722e490da2e7252b68241f13 [2022-09-16 11:55:04,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:55:04,300 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:55:04,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:55:04,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:55:04,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:55:04,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:55:04" (1/1) ... [2022-09-16 11:55:04,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d5092c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04, skipping insertion in model container [2022-09-16 11:55:04,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:55:04" (1/1) ... [2022-09-16 11:55:04,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:55:04,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:55:04,469 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-counter-fun.wvr.c[2681,2694] [2022-09-16 11:55:04,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:55:04,480 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:55:04,501 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-counter-fun.wvr.c[2681,2694] [2022-09-16 11:55:04,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:55:04,520 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:55:04,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04 WrapperNode [2022-09-16 11:55:04,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:55:04,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:55:04,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:55:04,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:55:04,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04" (1/1) ... [2022-09-16 11:55:04,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04" (1/1) ... [2022-09-16 11:55:04,560 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 201 [2022-09-16 11:55:04,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:55:04,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:55:04,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:55:04,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:55:04,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04" (1/1) ... [2022-09-16 11:55:04,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04" (1/1) ... [2022-09-16 11:55:04,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04" (1/1) ... [2022-09-16 11:55:04,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04" (1/1) ... [2022-09-16 11:55:04,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04" (1/1) ... [2022-09-16 11:55:04,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04" (1/1) ... [2022-09-16 11:55:04,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04" (1/1) ... [2022-09-16 11:55:04,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:55:04,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:55:04,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:55:04,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:55:04,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04" (1/1) ... [2022-09-16 11:55:04,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:55:04,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:04,615 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 11:55:04,622 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 11:55:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:55:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:55:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:55:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:55:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:55:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:55:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:55:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:55:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:55:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:55:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:55:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:55:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:55:04,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:55:04,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:55:04,652 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 11:55:04,724 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:55:04,725 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:55:04,997 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:55:05,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:55:05,162 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:55:05,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:55:05 BoogieIcfgContainer [2022-09-16 11:55:05,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:55:05,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:55:05,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:55:05,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:55:05,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:55:04" (1/3) ... [2022-09-16 11:55:05,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a018817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:55:05, skipping insertion in model container [2022-09-16 11:55:05,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:04" (2/3) ... [2022-09-16 11:55:05,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a018817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:55:05, skipping insertion in model container [2022-09-16 11:55:05,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:55:05" (3/3) ... [2022-09-16 11:55:05,172 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2022-09-16 11:55:05,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:55:05,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 11:55:05,185 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:55:05,245 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:55:05,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 180 transitions, 376 flow [2022-09-16 11:55:05,348 INFO L130 PetriNetUnfolder]: 13/178 cut-off events. [2022-09-16 11:55:05,349 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:55:05,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 13/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 121 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2022-09-16 11:55:05,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 180 transitions, 376 flow [2022-09-16 11:55:05,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 159 transitions, 327 flow [2022-09-16 11:55:05,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:55:05,379 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;@60fe366e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:55:05,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-09-16 11:55:05,396 INFO L130 PetriNetUnfolder]: 3/67 cut-off events. [2022-09-16 11:55:05,396 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:55:05,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:05,397 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] [2022-09-16 11:55:05,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:05,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:05,401 INFO L85 PathProgramCache]: Analyzing trace with hash 822045203, now seen corresponding path program 1 times [2022-09-16 11:55:05,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:05,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885564467] [2022-09-16 11:55:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:05,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:05,634 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 11:55:05,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:05,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885564467] [2022-09-16 11:55:05,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885564467] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:05,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:05,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:05,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217554698] [2022-09-16 11:55:05,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:05,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:05,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:05,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:05,674 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 180 [2022-09-16 11:55:05,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 159 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:05,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:05,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 180 [2022-09-16 11:55:05,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:05,851 INFO L130 PetriNetUnfolder]: 23/315 cut-off events. [2022-09-16 11:55:05,851 INFO L131 PetriNetUnfolder]: For 30/32 co-relation queries the response was YES. [2022-09-16 11:55:05,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 315 events. 23/315 cut-off events. For 30/32 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 864 event pairs, 6 based on Foata normal form. 22/291 useless extension candidates. Maximal degree in co-relation 236. Up to 42 conditions per place. [2022-09-16 11:55:05,857 INFO L137 encePairwiseOnDemand]: 159/180 looper letters, 42 selfloop transitions, 9 changer transitions 4/173 dead transitions. [2022-09-16 11:55:05,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 173 transitions, 466 flow [2022-09-16 11:55:05,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:55:05,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:55:05,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 767 transitions. [2022-09-16 11:55:05,875 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8522222222222222 [2022-09-16 11:55:05,876 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 767 transitions. [2022-09-16 11:55:05,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 767 transitions. [2022-09-16 11:55:05,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:05,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 767 transitions. [2022-09-16 11:55:05,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:05,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:05,898 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:05,900 INFO L175 Difference]: Start difference. First operand has 154 places, 159 transitions, 327 flow. Second operand 5 states and 767 transitions. [2022-09-16 11:55:05,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 173 transitions, 466 flow [2022-09-16 11:55:05,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 173 transitions, 456 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:55:05,916 INFO L231 Difference]: Finished difference. Result has 158 places, 154 transitions, 365 flow [2022-09-16 11:55:05,917 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=158, PETRI_TRANSITIONS=154} [2022-09-16 11:55:05,921 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 4 predicate places. [2022-09-16 11:55:05,921 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 154 transitions, 365 flow [2022-09-16 11:55:05,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:05,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:05,923 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] [2022-09-16 11:55:05,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:55:05,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:05,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:05,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1012410176, now seen corresponding path program 1 times [2022-09-16 11:55:05,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:05,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317897266] [2022-09-16 11:55:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:05,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:06,021 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 11:55:06,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:06,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317897266] [2022-09-16 11:55:06,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317897266] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:06,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795530757] [2022-09-16 11:55:06,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:06,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:06,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:06,024 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 11:55:06,025 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 11:55:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:06,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:06,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:06,238 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 11:55:06,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:06,280 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 11:55:06,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795530757] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:06,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:06,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:55:06,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376783143] [2022-09-16 11:55:06,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:06,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:55:06,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:06,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:55:06,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:55:06,313 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 180 [2022-09-16 11:55:06,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 154 transitions, 365 flow. Second operand has 12 states, 12 states have (on average 142.66666666666666) internal successors, (1712), 12 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:06,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:06,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 180 [2022-09-16 11:55:06,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:06,747 INFO L130 PetriNetUnfolder]: 56/675 cut-off events. [2022-09-16 11:55:06,747 INFO L131 PetriNetUnfolder]: For 47/52 co-relation queries the response was YES. [2022-09-16 11:55:06,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 675 events. 56/675 cut-off events. For 47/52 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2918 event pairs, 15 based on Foata normal form. 6/586 useless extension candidates. Maximal degree in co-relation 544. Up to 35 conditions per place. [2022-09-16 11:55:06,768 INFO L137 encePairwiseOnDemand]: 165/180 looper letters, 81 selfloop transitions, 40 changer transitions 0/239 dead transitions. [2022-09-16 11:55:06,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 239 transitions, 843 flow [2022-09-16 11:55:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:55:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:55:06,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2647 transitions. [2022-09-16 11:55:06,773 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8169753086419753 [2022-09-16 11:55:06,774 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2647 transitions. [2022-09-16 11:55:06,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2647 transitions. [2022-09-16 11:55:06,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:06,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2647 transitions. [2022-09-16 11:55:06,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 147.05555555555554) internal successors, (2647), 18 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:06,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 180.0) internal successors, (3420), 19 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:06,802 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 180.0) internal successors, (3420), 19 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:06,803 INFO L175 Difference]: Start difference. First operand has 158 places, 154 transitions, 365 flow. Second operand 18 states and 2647 transitions. [2022-09-16 11:55:06,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 239 transitions, 843 flow [2022-09-16 11:55:06,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 239 transitions, 838 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:06,808 INFO L231 Difference]: Finished difference. Result has 174 places, 181 transitions, 598 flow [2022-09-16 11:55:06,808 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=598, PETRI_PLACES=174, PETRI_TRANSITIONS=181} [2022-09-16 11:55:06,809 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 20 predicate places. [2022-09-16 11:55:06,809 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 181 transitions, 598 flow [2022-09-16 11:55:06,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 142.66666666666666) internal successors, (1712), 12 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:06,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:06,810 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] [2022-09-16 11:55:06,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:07,042 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 11:55:07,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:07,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:07,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1319944917, now seen corresponding path program 1 times [2022-09-16 11:55:07,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:07,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254647467] [2022-09-16 11:55:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:07,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:07,126 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 11:55:07,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:07,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254647467] [2022-09-16 11:55:07,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254647467] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:07,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731281519] [2022-09-16 11:55:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:07,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:07,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:07,128 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 11:55:07,176 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 11:55:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:07,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:07,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:07,258 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 11:55:07,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:07,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731281519] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:07,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:07,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:55:07,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784638539] [2022-09-16 11:55:07,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:07,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:55:07,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:07,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:55:07,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:55:07,261 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 180 [2022-09-16 11:55:07,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 181 transitions, 598 flow. Second operand has 6 states, 6 states have (on average 142.33333333333334) internal successors, (854), 6 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:07,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:07,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 180 [2022-09-16 11:55:07,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:07,423 INFO L130 PetriNetUnfolder]: 56/667 cut-off events. [2022-09-16 11:55:07,423 INFO L131 PetriNetUnfolder]: For 141/146 co-relation queries the response was YES. [2022-09-16 11:55:07,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 667 events. 56/667 cut-off events. For 141/146 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2854 event pairs, 15 based on Foata normal form. 8/580 useless extension candidates. Maximal degree in co-relation 746. Up to 96 conditions per place. [2022-09-16 11:55:07,426 INFO L137 encePairwiseOnDemand]: 169/180 looper letters, 43 selfloop transitions, 27 changer transitions 0/188 dead transitions. [2022-09-16 11:55:07,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 188 transitions, 722 flow [2022-09-16 11:55:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:55:07,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:55:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1031 transitions. [2022-09-16 11:55:07,429 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8182539682539682 [2022-09-16 11:55:07,429 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1031 transitions. [2022-09-16 11:55:07,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1031 transitions. [2022-09-16 11:55:07,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:07,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1031 transitions. [2022-09-16 11:55:07,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.28571428571428) internal successors, (1031), 7 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:07,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:07,433 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:07,433 INFO L175 Difference]: Start difference. First operand has 174 places, 181 transitions, 598 flow. Second operand 7 states and 1031 transitions. [2022-09-16 11:55:07,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 188 transitions, 722 flow [2022-09-16 11:55:07,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 188 transitions, 648 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:07,438 INFO L231 Difference]: Finished difference. Result has 169 places, 173 transitions, 524 flow [2022-09-16 11:55:07,438 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=524, PETRI_PLACES=169, PETRI_TRANSITIONS=173} [2022-09-16 11:55:07,439 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 15 predicate places. [2022-09-16 11:55:07,439 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 173 transitions, 524 flow [2022-09-16 11:55:07,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.33333333333334) internal successors, (854), 6 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:07,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:07,440 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] [2022-09-16 11:55:07,459 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 11:55:07,656 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 11:55:07,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:07,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:07,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1195702445, now seen corresponding path program 2 times [2022-09-16 11:55:07,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:07,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869906708] [2022-09-16 11:55:07,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:07,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:07,785 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 11:55:07,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:07,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869906708] [2022-09-16 11:55:07,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869906708] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:07,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982546828] [2022-09-16 11:55:07,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:55:07,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:07,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:07,800 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 11:55:07,804 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 11:55:07,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:55:07,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:55:07,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:55:07,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:08,054 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 11:55:08,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:08,167 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 11:55:08,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982546828] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:08,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:08,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:55:08,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858836723] [2022-09-16 11:55:08,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:08,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:55:08,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:08,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:55:08,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:55:08,184 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 180 [2022-09-16 11:55:08,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 173 transitions, 524 flow. Second operand has 18 states, 18 states have (on average 128.61111111111111) internal successors, (2315), 18 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:08,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:08,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 180 [2022-09-16 11:55:08,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:08,999 INFO L130 PetriNetUnfolder]: 78/899 cut-off events. [2022-09-16 11:55:09,000 INFO L131 PetriNetUnfolder]: For 168/175 co-relation queries the response was YES. [2022-09-16 11:55:09,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1306 conditions, 899 events. 78/899 cut-off events. For 168/175 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4286 event pairs, 21 based on Foata normal form. 4/770 useless extension candidates. Maximal degree in co-relation 822. Up to 36 conditions per place. [2022-09-16 11:55:09,004 INFO L137 encePairwiseOnDemand]: 160/180 looper letters, 107 selfloop transitions, 65 changer transitions 0/275 dead transitions. [2022-09-16 11:55:09,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 275 transitions, 1155 flow [2022-09-16 11:55:09,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:55:09,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-09-16 11:55:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 6301 transitions. [2022-09-16 11:55:09,015 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7143990929705215 [2022-09-16 11:55:09,016 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 6301 transitions. [2022-09-16 11:55:09,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 6301 transitions. [2022-09-16 11:55:09,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:09,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 6301 transitions. [2022-09-16 11:55:09,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 128.59183673469389) internal successors, (6301), 49 states have internal predecessors, (6301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 180.0) internal successors, (9000), 50 states have internal predecessors, (9000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,042 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 180.0) internal successors, (9000), 50 states have internal predecessors, (9000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,042 INFO L175 Difference]: Start difference. First operand has 169 places, 173 transitions, 524 flow. Second operand 49 states and 6301 transitions. [2022-09-16 11:55:09,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 275 transitions, 1155 flow [2022-09-16 11:55:09,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 275 transitions, 1112 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:09,047 INFO L231 Difference]: Finished difference. Result has 215 places, 198 transitions, 739 flow [2022-09-16 11:55:09,048 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=739, PETRI_PLACES=215, PETRI_TRANSITIONS=198} [2022-09-16 11:55:09,048 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 61 predicate places. [2022-09-16 11:55:09,048 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 198 transitions, 739 flow [2022-09-16 11:55:09,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 128.61111111111111) internal successors, (2315), 18 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:09,049 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] [2022-09-16 11:55:09,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:55:09,266 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 11:55:09,266 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash 465409555, now seen corresponding path program 1 times [2022-09-16 11:55:09,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:09,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978977771] [2022-09-16 11:55:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:09,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:09,303 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 11:55:09,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:09,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978977771] [2022-09-16 11:55:09,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978977771] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:09,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:09,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:09,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288427502] [2022-09-16 11:55:09,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:09,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:09,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:09,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:09,305 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 180 [2022-09-16 11:55:09,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 198 transitions, 739 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:09,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 180 [2022-09-16 11:55:09,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:09,475 INFO L130 PetriNetUnfolder]: 386/1571 cut-off events. [2022-09-16 11:55:09,475 INFO L131 PetriNetUnfolder]: For 180/215 co-relation queries the response was YES. [2022-09-16 11:55:09,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2825 conditions, 1571 events. 386/1571 cut-off events. For 180/215 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9884 event pairs, 119 based on Foata normal form. 7/1333 useless extension candidates. Maximal degree in co-relation 2556. Up to 491 conditions per place. [2022-09-16 11:55:09,482 INFO L137 encePairwiseOnDemand]: 174/180 looper letters, 26 selfloop transitions, 4 changer transitions 0/213 dead transitions. [2022-09-16 11:55:09,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 213 transitions, 836 flow [2022-09-16 11:55:09,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:55:09,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:55:09,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 802 transitions. [2022-09-16 11:55:09,484 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8911111111111111 [2022-09-16 11:55:09,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 802 transitions. [2022-09-16 11:55:09,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 802 transitions. [2022-09-16 11:55:09,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:09,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 802 transitions. [2022-09-16 11:55:09,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.4) internal successors, (802), 5 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,487 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,487 INFO L175 Difference]: Start difference. First operand has 215 places, 198 transitions, 739 flow. Second operand 5 states and 802 transitions. [2022-09-16 11:55:09,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 213 transitions, 836 flow [2022-09-16 11:55:09,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 213 transitions, 753 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-09-16 11:55:09,491 INFO L231 Difference]: Finished difference. Result has 207 places, 201 transitions, 686 flow [2022-09-16 11:55:09,491 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=686, PETRI_PLACES=207, PETRI_TRANSITIONS=201} [2022-09-16 11:55:09,492 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 53 predicate places. [2022-09-16 11:55:09,492 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 201 transitions, 686 flow [2022-09-16 11:55:09,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:09,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:09,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:55:09,492 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:09,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:09,493 INFO L85 PathProgramCache]: Analyzing trace with hash -463800145, now seen corresponding path program 1 times [2022-09-16 11:55:09,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:09,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129783534] [2022-09-16 11:55:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:09,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:09,524 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 11:55:09,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:09,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129783534] [2022-09-16 11:55:09,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129783534] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:09,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:09,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:09,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563355440] [2022-09-16 11:55:09,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:09,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:09,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:09,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:09,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:09,527 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 180 [2022-09-16 11:55:09,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 201 transitions, 686 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:09,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 180 [2022-09-16 11:55:09,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:09,775 INFO L130 PetriNetUnfolder]: 575/2068 cut-off events. [2022-09-16 11:55:09,775 INFO L131 PetriNetUnfolder]: For 385/392 co-relation queries the response was YES. [2022-09-16 11:55:09,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3671 conditions, 2068 events. 575/2068 cut-off events. For 385/392 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16644 event pairs, 196 based on Foata normal form. 0/1816 useless extension candidates. Maximal degree in co-relation 3423. Up to 736 conditions per place. [2022-09-16 11:55:09,784 INFO L137 encePairwiseOnDemand]: 174/180 looper letters, 25 selfloop transitions, 4 changer transitions 0/215 dead transitions. [2022-09-16 11:55:09,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 215 transitions, 775 flow [2022-09-16 11:55:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:55:09,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:55:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 801 transitions. [2022-09-16 11:55:09,788 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.89 [2022-09-16 11:55:09,788 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 801 transitions. [2022-09-16 11:55:09,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 801 transitions. [2022-09-16 11:55:09,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:09,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 801 transitions. [2022-09-16 11:55:09,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,791 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,791 INFO L175 Difference]: Start difference. First operand has 207 places, 201 transitions, 686 flow. Second operand 5 states and 801 transitions. [2022-09-16 11:55:09,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 215 transitions, 775 flow [2022-09-16 11:55:09,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 215 transitions, 773 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:09,795 INFO L231 Difference]: Finished difference. Result has 213 places, 204 transitions, 714 flow [2022-09-16 11:55:09,796 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=714, PETRI_PLACES=213, PETRI_TRANSITIONS=204} [2022-09-16 11:55:09,798 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 59 predicate places. [2022-09-16 11:55:09,798 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 204 transitions, 714 flow [2022-09-16 11:55:09,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:09,798 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:09,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:55:09,798 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:09,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash 114987223, now seen corresponding path program 1 times [2022-09-16 11:55:09,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:09,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600653219] [2022-09-16 11:55:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:09,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:09,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600653219] [2022-09-16 11:55:09,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600653219] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:09,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753693005] [2022-09-16 11:55:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:09,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:09,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:09,874 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 11:55:09,876 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 11:55:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:09,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:55:09,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:55:10,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:10,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753693005] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:10,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:10,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:55:10,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364904992] [2022-09-16 11:55:10,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:10,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:55:10,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:10,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:55:10,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:55:10,173 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 180 [2022-09-16 11:55:10,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 204 transitions, 714 flow. Second operand has 7 states, 7 states have (on average 139.14285714285714) internal successors, (974), 7 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:10,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:10,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 180 [2022-09-16 11:55:10,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:10,416 INFO L130 PetriNetUnfolder]: 120/1672 cut-off events. [2022-09-16 11:55:10,417 INFO L131 PetriNetUnfolder]: For 392/399 co-relation queries the response was YES. [2022-09-16 11:55:10,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2782 conditions, 1672 events. 120/1672 cut-off events. For 392/399 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 11315 event pairs, 70 based on Foata normal form. 28/1609 useless extension candidates. Maximal degree in co-relation 2378. Up to 244 conditions per place. [2022-09-16 11:55:10,424 INFO L137 encePairwiseOnDemand]: 168/180 looper letters, 75 selfloop transitions, 22 changer transitions 10/238 dead transitions. [2022-09-16 11:55:10,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 238 transitions, 1072 flow [2022-09-16 11:55:10,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:55:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:55:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1414 transitions. [2022-09-16 11:55:10,426 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7855555555555556 [2022-09-16 11:55:10,426 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1414 transitions. [2022-09-16 11:55:10,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1414 transitions. [2022-09-16 11:55:10,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:10,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1414 transitions. [2022-09-16 11:55:10,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.4) internal successors, (1414), 10 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:10,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 180.0) internal successors, (1980), 11 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:10,432 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 180.0) internal successors, (1980), 11 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:10,432 INFO L175 Difference]: Start difference. First operand has 213 places, 204 transitions, 714 flow. Second operand 10 states and 1414 transitions. [2022-09-16 11:55:10,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 238 transitions, 1072 flow [2022-09-16 11:55:10,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 238 transitions, 1070 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:10,438 INFO L231 Difference]: Finished difference. Result has 223 places, 205 transitions, 770 flow [2022-09-16 11:55:10,438 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=770, PETRI_PLACES=223, PETRI_TRANSITIONS=205} [2022-09-16 11:55:10,438 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 69 predicate places. [2022-09-16 11:55:10,439 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 205 transitions, 770 flow [2022-09-16 11:55:10,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.14285714285714) internal successors, (974), 7 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:10,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:10,439 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:10,458 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 11:55:10,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:10,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:10,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:10,656 INFO L85 PathProgramCache]: Analyzing trace with hash 568080778, now seen corresponding path program 1 times [2022-09-16 11:55:10,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:10,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036735877] [2022-09-16 11:55:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:10,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:55:10,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:10,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036735877] [2022-09-16 11:55:10,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036735877] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:10,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926444591] [2022-09-16 11:55:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:10,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:10,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:10,698 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 11:55:10,699 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 11:55:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:10,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:10,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:55:10,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:55:10,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926444591] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:10,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:10,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:55:10,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596896912] [2022-09-16 11:55:10,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:10,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:55:10,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:10,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:55:10,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:55:10,832 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 180 [2022-09-16 11:55:10,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 205 transitions, 770 flow. Second operand has 12 states, 12 states have (on average 156.66666666666666) internal successors, (1880), 12 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:10,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:10,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 180 [2022-09-16 11:55:10,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:11,532 INFO L130 PetriNetUnfolder]: 1072/4094 cut-off events. [2022-09-16 11:55:11,532 INFO L131 PetriNetUnfolder]: For 1057/1253 co-relation queries the response was YES. [2022-09-16 11:55:11,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9231 conditions, 4094 events. 1072/4094 cut-off events. For 1057/1253 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 36302 event pairs, 175 based on Foata normal form. 91/3849 useless extension candidates. Maximal degree in co-relation 8306. Up to 842 conditions per place. [2022-09-16 11:55:11,553 INFO L137 encePairwiseOnDemand]: 173/180 looper letters, 67 selfloop transitions, 18 changer transitions 0/272 dead transitions. [2022-09-16 11:55:11,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 272 transitions, 1172 flow [2022-09-16 11:55:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:55:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:55:11,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2860 transitions. [2022-09-16 11:55:11,558 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2022-09-16 11:55:11,558 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2860 transitions. [2022-09-16 11:55:11,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2860 transitions. [2022-09-16 11:55:11,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:11,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2860 transitions. [2022-09-16 11:55:11,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 158.88888888888889) internal successors, (2860), 18 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:11,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 180.0) internal successors, (3420), 19 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:11,566 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 180.0) internal successors, (3420), 19 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:11,566 INFO L175 Difference]: Start difference. First operand has 223 places, 205 transitions, 770 flow. Second operand 18 states and 2860 transitions. [2022-09-16 11:55:11,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 272 transitions, 1172 flow [2022-09-16 11:55:11,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 272 transitions, 1144 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:55:11,574 INFO L231 Difference]: Finished difference. Result has 238 places, 217 transitions, 848 flow [2022-09-16 11:55:11,574 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=848, PETRI_PLACES=238, PETRI_TRANSITIONS=217} [2022-09-16 11:55:11,574 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 84 predicate places. [2022-09-16 11:55:11,574 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 217 transitions, 848 flow [2022-09-16 11:55:11,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 156.66666666666666) internal successors, (1880), 12 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:11,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:11,576 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:11,594 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 11:55:11,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:11,793 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:11,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:11,793 INFO L85 PathProgramCache]: Analyzing trace with hash 430635579, now seen corresponding path program 1 times [2022-09-16 11:55:11,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:11,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092854775] [2022-09-16 11:55:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:11,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:55:11,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:11,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092854775] [2022-09-16 11:55:11,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092854775] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:11,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441907694] [2022-09-16 11:55:11,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:11,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:11,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:11,897 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 11:55:11,912 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 11:55:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:11,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:11,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:55:12,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:12,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441907694] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:12,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:12,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:55:12,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781061007] [2022-09-16 11:55:12,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:12,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:55:12,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:12,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:55:12,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:55:12,017 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 180 [2022-09-16 11:55:12,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 217 transitions, 848 flow. Second operand has 6 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:12,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 180 [2022-09-16 11:55:12,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:12,526 INFO L130 PetriNetUnfolder]: 981/3786 cut-off events. [2022-09-16 11:55:12,526 INFO L131 PetriNetUnfolder]: For 1817/1950 co-relation queries the response was YES. [2022-09-16 11:55:12,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9232 conditions, 3786 events. 981/3786 cut-off events. For 1817/1950 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 33272 event pairs, 91 based on Foata normal form. 119/3618 useless extension candidates. Maximal degree in co-relation 8289. Up to 924 conditions per place. [2022-09-16 11:55:12,551 INFO L137 encePairwiseOnDemand]: 175/180 looper letters, 31 selfloop transitions, 11 changer transitions 0/229 dead transitions. [2022-09-16 11:55:12,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 229 transitions, 962 flow [2022-09-16 11:55:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:55:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:55:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1112 transitions. [2022-09-16 11:55:12,555 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8825396825396825 [2022-09-16 11:55:12,555 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1112 transitions. [2022-09-16 11:55:12,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1112 transitions. [2022-09-16 11:55:12,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:12,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1112 transitions. [2022-09-16 11:55:12,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 158.85714285714286) internal successors, (1112), 7 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,561 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,561 INFO L175 Difference]: Start difference. First operand has 238 places, 217 transitions, 848 flow. Second operand 7 states and 1112 transitions. [2022-09-16 11:55:12,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 229 transitions, 962 flow [2022-09-16 11:55:12,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 229 transitions, 930 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:12,572 INFO L231 Difference]: Finished difference. Result has 234 places, 213 transitions, 811 flow [2022-09-16 11:55:12,572 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=811, PETRI_PLACES=234, PETRI_TRANSITIONS=213} [2022-09-16 11:55:12,573 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 80 predicate places. [2022-09-16 11:55:12,573 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 213 transitions, 811 flow [2022-09-16 11:55:12,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:12,574 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:12,593 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 11:55:12,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:12,793 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:12,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:12,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1801998332, now seen corresponding path program 1 times [2022-09-16 11:55:12,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:12,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110257292] [2022-09-16 11:55:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:12,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:55:12,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:12,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110257292] [2022-09-16 11:55:12,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110257292] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:12,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124698117] [2022-09-16 11:55:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:12,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:12,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:12,844 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 11:55:12,847 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 11:55:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:12,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:55:12,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:13,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:55:13,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:13,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124698117] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:13,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:13,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:55:13,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504973568] [2022-09-16 11:55:13,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:13,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:55:13,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:13,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:55:13,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:55:13,100 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 180 [2022-09-16 11:55:13,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 213 transitions, 811 flow. Second operand has 7 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:13,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:13,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 180 [2022-09-16 11:55:13,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:13,450 INFO L130 PetriNetUnfolder]: 194/2469 cut-off events. [2022-09-16 11:55:13,450 INFO L131 PetriNetUnfolder]: For 1119/1137 co-relation queries the response was YES. [2022-09-16 11:55:13,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4699 conditions, 2469 events. 194/2469 cut-off events. For 1119/1137 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 19512 event pairs, 150 based on Foata normal form. 4/2319 useless extension candidates. Maximal degree in co-relation 3939. Up to 472 conditions per place. [2022-09-16 11:55:13,474 INFO L137 encePairwiseOnDemand]: 170/180 looper letters, 62 selfloop transitions, 13 changer transitions 4/218 dead transitions. [2022-09-16 11:55:13,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 218 transitions, 983 flow [2022-09-16 11:55:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:55:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:55:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1130 transitions. [2022-09-16 11:55:13,476 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2022-09-16 11:55:13,476 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1130 transitions. [2022-09-16 11:55:13,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1130 transitions. [2022-09-16 11:55:13,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:13,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1130 transitions. [2022-09-16 11:55:13,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.25) internal successors, (1130), 8 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:13,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 180.0) internal successors, (1620), 9 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:13,481 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 180.0) internal successors, (1620), 9 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:13,481 INFO L175 Difference]: Start difference. First operand has 234 places, 213 transitions, 811 flow. Second operand 8 states and 1130 transitions. [2022-09-16 11:55:13,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 218 transitions, 983 flow [2022-09-16 11:55:13,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 218 transitions, 969 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:13,490 INFO L231 Difference]: Finished difference. Result has 237 places, 212 transitions, 824 flow [2022-09-16 11:55:13,491 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=824, PETRI_PLACES=237, PETRI_TRANSITIONS=212} [2022-09-16 11:55:13,491 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 83 predicate places. [2022-09-16 11:55:13,491 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 212 transitions, 824 flow [2022-09-16 11:55:13,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:13,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:13,492 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:13,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:13,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:13,709 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1014863807, now seen corresponding path program 1 times [2022-09-16 11:55:13,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:13,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098106561] [2022-09-16 11:55:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:13,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:55:13,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:13,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098106561] [2022-09-16 11:55:13,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098106561] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:13,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100297739] [2022-09-16 11:55:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:13,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:13,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:13,776 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 11:55:13,777 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 11:55:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:13,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:13,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:55:13,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:13,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:55:13,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100297739] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:13,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:13,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:55:13,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616012922] [2022-09-16 11:55:13,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:13,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:55:13,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:55:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:55:13,917 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 180 [2022-09-16 11:55:13,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 212 transitions, 824 flow. Second operand has 12 states, 12 states have (on average 156.75) internal successors, (1881), 12 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 11:55:13,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:13,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 180 [2022-09-16 11:55:13,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:15,280 INFO L130 PetriNetUnfolder]: 2780/7979 cut-off events. [2022-09-16 11:55:15,280 INFO L131 PetriNetUnfolder]: For 6207/6981 co-relation queries the response was YES. [2022-09-16 11:55:15,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19634 conditions, 7979 events. 2780/7979 cut-off events. For 6207/6981 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 85962 event pairs, 312 based on Foata normal form. 198/7211 useless extension candidates. Maximal degree in co-relation 18852. Up to 1712 conditions per place. [2022-09-16 11:55:15,338 INFO L137 encePairwiseOnDemand]: 173/180 looper letters, 63 selfloop transitions, 18 changer transitions 0/275 dead transitions. [2022-09-16 11:55:15,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 275 transitions, 1230 flow [2022-09-16 11:55:15,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:55:15,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:55:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2856 transitions. [2022-09-16 11:55:15,342 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8814814814814815 [2022-09-16 11:55:15,342 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2856 transitions. [2022-09-16 11:55:15,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2856 transitions. [2022-09-16 11:55:15,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:15,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2856 transitions. [2022-09-16 11:55:15,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 158.66666666666666) internal successors, (2856), 18 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:15,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 180.0) internal successors, (3420), 19 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:15,350 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 180.0) internal successors, (3420), 19 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:15,350 INFO L175 Difference]: Start difference. First operand has 237 places, 212 transitions, 824 flow. Second operand 18 states and 2856 transitions. [2022-09-16 11:55:15,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 275 transitions, 1230 flow [2022-09-16 11:55:15,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 275 transitions, 1160 flow, removed 22 selfloop flow, removed 7 redundant places. [2022-09-16 11:55:15,367 INFO L231 Difference]: Finished difference. Result has 250 places, 224 transitions, 900 flow [2022-09-16 11:55:15,367 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=900, PETRI_PLACES=250, PETRI_TRANSITIONS=224} [2022-09-16 11:55:15,368 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 96 predicate places. [2022-09-16 11:55:15,368 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 224 transitions, 900 flow [2022-09-16 11:55:15,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 156.75) internal successors, (1881), 12 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 11:55:15,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:15,369 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:15,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:15,595 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,SelfDestructingSolverStorable10 [2022-09-16 11:55:15,596 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:15,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:15,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1396006286, now seen corresponding path program 1 times [2022-09-16 11:55:15,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:15,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637580471] [2022-09-16 11:55:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:15,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:55:15,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:15,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637580471] [2022-09-16 11:55:15,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637580471] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:15,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904669860] [2022-09-16 11:55:15,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:15,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:15,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:15,684 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 11:55:15,731 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 11:55:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:15,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:15,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:55:15,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:15,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904669860] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:15,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:15,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:55:15,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746613808] [2022-09-16 11:55:15,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:15,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:55:15,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:15,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:55:15,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:55:15,841 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 180 [2022-09-16 11:55:15,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 224 transitions, 900 flow. Second operand has 6 states, 6 states have (on average 156.5) internal successors, (939), 6 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:15,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:15,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 180 [2022-09-16 11:55:15,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:17,134 INFO L130 PetriNetUnfolder]: 2534/7157 cut-off events. [2022-09-16 11:55:17,134 INFO L131 PetriNetUnfolder]: For 4933/5107 co-relation queries the response was YES. [2022-09-16 11:55:17,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17880 conditions, 7157 events. 2534/7157 cut-off events. For 4933/5107 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 76883 event pairs, 30 based on Foata normal form. 264/6767 useless extension candidates. Maximal degree in co-relation 17096. Up to 2082 conditions per place. [2022-09-16 11:55:17,175 INFO L137 encePairwiseOnDemand]: 175/180 looper letters, 30 selfloop transitions, 11 changer transitions 0/235 dead transitions. [2022-09-16 11:55:17,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 235 transitions, 1004 flow [2022-09-16 11:55:17,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:55:17,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:55:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1111 transitions. [2022-09-16 11:55:17,177 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8817460317460317 [2022-09-16 11:55:17,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1111 transitions. [2022-09-16 11:55:17,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1111 transitions. [2022-09-16 11:55:17,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:17,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1111 transitions. [2022-09-16 11:55:17,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 158.71428571428572) internal successors, (1111), 7 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:17,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:17,179 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:17,179 INFO L175 Difference]: Start difference. First operand has 250 places, 224 transitions, 900 flow. Second operand 7 states and 1111 transitions. [2022-09-16 11:55:17,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 235 transitions, 1004 flow [2022-09-16 11:55:17,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 235 transitions, 972 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:17,201 INFO L231 Difference]: Finished difference. Result has 246 places, 220 transitions, 863 flow [2022-09-16 11:55:17,201 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=863, PETRI_PLACES=246, PETRI_TRANSITIONS=220} [2022-09-16 11:55:17,201 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 92 predicate places. [2022-09-16 11:55:17,202 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 220 transitions, 863 flow [2022-09-16 11:55:17,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.5) internal successors, (939), 6 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:17,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:17,202 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] [2022-09-16 11:55:17,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:17,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:17,419 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:17,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1671571543, now seen corresponding path program 1 times [2022-09-16 11:55:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:17,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338285196] [2022-09-16 11:55:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:17,583 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 11:55:17,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:17,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338285196] [2022-09-16 11:55:17,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338285196] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:17,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956633645] [2022-09-16 11:55:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:17,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:17,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:17,592 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 11:55:17,595 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 11:55:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:17,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 11:55:17,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:17,765 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 11:55:17,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:17,987 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 11:55:17,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956633645] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:17,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:17,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-09-16 11:55:17,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855419079] [2022-09-16 11:55:17,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:17,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-16 11:55:17,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:17,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-16 11:55:17,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-09-16 11:55:17,991 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 180 [2022-09-16 11:55:17,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 220 transitions, 863 flow. Second operand has 32 states, 32 states have (on average 143.28125) internal successors, (4585), 32 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:17,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:17,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 180 [2022-09-16 11:55:17,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:20,255 INFO L130 PetriNetUnfolder]: 912/9108 cut-off events. [2022-09-16 11:55:20,256 INFO L131 PetriNetUnfolder]: For 4314/4440 co-relation queries the response was YES. [2022-09-16 11:55:20,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17650 conditions, 9108 events. 912/9108 cut-off events. For 4314/4440 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 95265 event pairs, 770 based on Foata normal form. 16/8480 useless extension candidates. Maximal degree in co-relation 15968. Up to 1262 conditions per place. [2022-09-16 11:55:20,317 INFO L137 encePairwiseOnDemand]: 168/180 looper letters, 224 selfloop transitions, 102 changer transitions 0/472 dead transitions. [2022-09-16 11:55:20,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 472 transitions, 2532 flow [2022-09-16 11:55:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-09-16 11:55:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-09-16 11:55:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 6494 transitions. [2022-09-16 11:55:20,322 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.819949494949495 [2022-09-16 11:55:20,322 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 6494 transitions. [2022-09-16 11:55:20,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 6494 transitions. [2022-09-16 11:55:20,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:20,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 6494 transitions. [2022-09-16 11:55:20,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 147.5909090909091) internal successors, (6494), 44 states have internal predecessors, (6494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:20,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 180.0) internal successors, (8100), 45 states have internal predecessors, (8100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:20,339 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 180.0) internal successors, (8100), 45 states have internal predecessors, (8100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:20,339 INFO L175 Difference]: Start difference. First operand has 246 places, 220 transitions, 863 flow. Second operand 44 states and 6494 transitions. [2022-09-16 11:55:20,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 472 transitions, 2532 flow [2022-09-16 11:55:20,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 472 transitions, 2518 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:20,375 INFO L231 Difference]: Finished difference. Result has 293 places, 280 transitions, 1502 flow [2022-09-16 11:55:20,375 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1502, PETRI_PLACES=293, PETRI_TRANSITIONS=280} [2022-09-16 11:55:20,376 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 139 predicate places. [2022-09-16 11:55:20,376 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 280 transitions, 1502 flow [2022-09-16 11:55:20,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 143.28125) internal successors, (4585), 32 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:20,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:20,377 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:20,417 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 11:55:20,591 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,SelfDestructingSolverStorable12 [2022-09-16 11:55:20,591 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1589000027, now seen corresponding path program 1 times [2022-09-16 11:55:20,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:20,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913842595] [2022-09-16 11:55:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:55:20,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:20,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913842595] [2022-09-16 11:55:20,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913842595] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:20,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653730779] [2022-09-16 11:55:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:20,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:20,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:20,720 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 11:55:20,721 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 11:55:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:20,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 11 conjunts are in the unsatisfiable core [2022-09-16 11:55:20,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:55:20,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:55:20,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653730779] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:20,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:20,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-09-16 11:55:20,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816356557] [2022-09-16 11:55:20,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:20,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-09-16 11:55:20,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-09-16 11:55:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-09-16 11:55:20,986 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 180 [2022-09-16 11:55:20,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 280 transitions, 1502 flow. Second operand has 24 states, 24 states have (on average 157.08333333333334) internal successors, (3770), 24 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:20,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:20,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 180 [2022-09-16 11:55:20,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:26,130 INFO L130 PetriNetUnfolder]: 8332/23990 cut-off events. [2022-09-16 11:55:26,130 INFO L131 PetriNetUnfolder]: For 14196/14644 co-relation queries the response was YES. [2022-09-16 11:55:26,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60949 conditions, 23990 events. 8332/23990 cut-off events. For 14196/14644 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 273090 event pairs, 574 based on Foata normal form. 588/23010 useless extension candidates. Maximal degree in co-relation 59022. Up to 8080 conditions per place. [2022-09-16 11:55:26,401 INFO L137 encePairwiseOnDemand]: 174/180 looper letters, 131 selfloop transitions, 32 changer transitions 0/417 dead transitions. [2022-09-16 11:55:26,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 417 transitions, 2330 flow [2022-09-16 11:55:26,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-16 11:55:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-16 11:55:26,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5097 transitions. [2022-09-16 11:55:26,406 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8848958333333333 [2022-09-16 11:55:26,406 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5097 transitions. [2022-09-16 11:55:26,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5097 transitions. [2022-09-16 11:55:26,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:26,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5097 transitions. [2022-09-16 11:55:26,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 159.28125) internal successors, (5097), 32 states have internal predecessors, (5097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:26,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 180.0) internal successors, (5940), 33 states have internal predecessors, (5940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:26,423 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 180.0) internal successors, (5940), 33 states have internal predecessors, (5940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:26,423 INFO L175 Difference]: Start difference. First operand has 293 places, 280 transitions, 1502 flow. Second operand 32 states and 5097 transitions. [2022-09-16 11:55:26,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 417 transitions, 2330 flow [2022-09-16 11:55:26,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 417 transitions, 2263 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-09-16 11:55:26,484 INFO L231 Difference]: Finished difference. Result has 316 places, 299 transitions, 1627 flow [2022-09-16 11:55:26,484 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1627, PETRI_PLACES=316, PETRI_TRANSITIONS=299} [2022-09-16 11:55:26,485 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 162 predicate places. [2022-09-16 11:55:26,485 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 299 transitions, 1627 flow [2022-09-16 11:55:26,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 157.08333333333334) internal successors, (3770), 24 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:26,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:26,486 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:26,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:26,704 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,SelfDestructingSolverStorable13 [2022-09-16 11:55:26,704 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:26,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:26,705 INFO L85 PathProgramCache]: Analyzing trace with hash 80890487, now seen corresponding path program 2 times [2022-09-16 11:55:26,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:26,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881842096] [2022-09-16 11:55:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:26,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:55:26,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:26,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881842096] [2022-09-16 11:55:26,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881842096] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:26,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536155961] [2022-09-16 11:55:26,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:55:26,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:26,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:26,813 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 11:55:26,814 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 11:55:26,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:55:26,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:55:26,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:26,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-09-16 11:55:27,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-09-16 11:55:27,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536155961] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:27,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:27,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-09-16 11:55:27,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385295922] [2022-09-16 11:55:27,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:27,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:55:27,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:27,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:55:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:55:27,197 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 180 [2022-09-16 11:55:27,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 299 transitions, 1627 flow. Second operand has 16 states, 16 states have (on average 150.5625) internal successors, (2409), 16 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:27,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:27,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 180 [2022-09-16 11:55:27,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:42,887 INFO L130 PetriNetUnfolder]: 32104/78870 cut-off events. [2022-09-16 11:55:42,887 INFO L131 PetriNetUnfolder]: For 36030/36030 co-relation queries the response was YES. [2022-09-16 11:55:43,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186565 conditions, 78870 events. 32104/78870 cut-off events. For 36030/36030 co-relation queries the response was YES. Maximal size of possible extension queue 1235. Compared 960414 event pairs, 1722 based on Foata normal form. 1260/66676 useless extension candidates. Maximal degree in co-relation 184038. Up to 11790 conditions per place. [2022-09-16 11:55:44,058 INFO L137 encePairwiseOnDemand]: 171/180 looper letters, 73 selfloop transitions, 23 changer transitions 42/400 dead transitions. [2022-09-16 11:55:44,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 400 transitions, 2175 flow [2022-09-16 11:55:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:55:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 11:55:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3370 transitions. [2022-09-16 11:55:44,060 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.851010101010101 [2022-09-16 11:55:44,061 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3370 transitions. [2022-09-16 11:55:44,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3370 transitions. [2022-09-16 11:55:44,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:44,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3370 transitions. [2022-09-16 11:55:44,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 153.1818181818182) internal successors, (3370), 22 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:44,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 180.0) internal successors, (4140), 23 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:44,067 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 180.0) internal successors, (4140), 23 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:44,067 INFO L175 Difference]: Start difference. First operand has 316 places, 299 transitions, 1627 flow. Second operand 22 states and 3370 transitions. [2022-09-16 11:55:44,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 400 transitions, 2175 flow [2022-09-16 11:55:44,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 400 transitions, 2129 flow, removed 8 selfloop flow, removed 15 redundant places. [2022-09-16 11:55:44,784 INFO L231 Difference]: Finished difference. Result has 322 places, 297 transitions, 1635 flow [2022-09-16 11:55:44,785 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1635, PETRI_PLACES=322, PETRI_TRANSITIONS=297} [2022-09-16 11:55:44,786 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 168 predicate places. [2022-09-16 11:55:44,786 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 297 transitions, 1635 flow [2022-09-16 11:55:44,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 150.5625) internal successors, (2409), 16 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:44,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:44,787 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:44,806 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 11:55:45,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:55:45,007 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:45,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1034227675, now seen corresponding path program 2 times [2022-09-16 11:55:45,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:45,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818184747] [2022-09-16 11:55:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:45,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:55:45,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:45,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818184747] [2022-09-16 11:55:45,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818184747] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:45,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888181465] [2022-09-16 11:55:45,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:55:45,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:45,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:45,227 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:45,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 11:55:45,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:55:45,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:55:45,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:45,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-09-16 11:55:45,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-09-16 11:55:45,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888181465] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:45,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:45,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 5, 5] total 27 [2022-09-16 11:55:45,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788075321] [2022-09-16 11:55:45,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:45,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-09-16 11:55:45,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:45,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-09-16 11:55:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-09-16 11:55:45,736 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 180 [2022-09-16 11:55:45,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 297 transitions, 1635 flow. Second operand has 28 states, 28 states have (on average 150.46428571428572) internal successors, (4213), 28 states have internal predecessors, (4213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:45,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:45,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 180 [2022-09-16 11:55:45,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:57,441 INFO L130 PetriNetUnfolder]: 25398/55168 cut-off events. [2022-09-16 11:55:57,441 INFO L131 PetriNetUnfolder]: For 59065/61291 co-relation queries the response was YES. [2022-09-16 11:55:58,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165021 conditions, 55168 events. 25398/55168 cut-off events. For 59065/61291 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 575529 event pairs, 602 based on Foata normal form. 2814/57548 useless extension candidates. Maximal degree in co-relation 162758. Up to 10754 conditions per place. [2022-09-16 11:55:58,100 INFO L137 encePairwiseOnDemand]: 171/180 looper letters, 2 selfloop transitions, 3 changer transitions 318/523 dead transitions. [2022-09-16 11:55:58,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 523 transitions, 3023 flow [2022-09-16 11:55:58,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-16 11:55:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-09-16 11:55:58,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6122 transitions. [2022-09-16 11:55:58,119 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8502777777777778 [2022-09-16 11:55:58,120 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6122 transitions. [2022-09-16 11:55:58,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6122 transitions. [2022-09-16 11:55:58,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:58,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6122 transitions. [2022-09-16 11:55:58,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 153.05) internal successors, (6122), 40 states have internal predecessors, (6122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:58,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 180.0) internal successors, (7380), 41 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:58,138 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 180.0) internal successors, (7380), 41 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:58,138 INFO L175 Difference]: Start difference. First operand has 322 places, 297 transitions, 1635 flow. Second operand 40 states and 6122 transitions. [2022-09-16 11:55:58,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 523 transitions, 3023 flow [2022-09-16 11:55:58,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 523 transitions, 2951 flow, removed 2 selfloop flow, removed 25 redundant places. [2022-09-16 11:55:58,602 INFO L231 Difference]: Finished difference. Result has 329 places, 205 transitions, 1155 flow [2022-09-16 11:55:58,602 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1155, PETRI_PLACES=329, PETRI_TRANSITIONS=205} [2022-09-16 11:55:58,603 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 175 predicate places. [2022-09-16 11:55:58,603 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 205 transitions, 1155 flow [2022-09-16 11:55:58,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 150.46428571428572) internal successors, (4213), 28 states have internal predecessors, (4213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:58,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:58,604 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] [2022-09-16 11:55:58,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:58,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:55:58,810 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-09-16 11:55:58,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:58,810 INFO L85 PathProgramCache]: Analyzing trace with hash 353769769, now seen corresponding path program 2 times [2022-09-16 11:55:58,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:58,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460014518] [2022-09-16 11:55:58,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:58,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:59,312 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 11:55:59,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:59,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460014518] [2022-09-16 11:55:59,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460014518] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:59,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770117073] [2022-09-16 11:55:59,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:55:59,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:59,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:59,325 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:59,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-09-16 11:55:59,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:55:59,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:55:59,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:55:59,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:59,641 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 11:55:59,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:59,856 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 11:55:59,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770117073] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:59,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:59,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-09-16 11:55:59,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286162326] [2022-09-16 11:55:59,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:59,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-09-16 11:55:59,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:59,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-09-16 11:55:59,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-09-16 11:55:59,859 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 180 [2022-09-16 11:55:59,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 205 transitions, 1155 flow. Second operand has 38 states, 38 states have (on average 128.97368421052633) internal successors, (4901), 38 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:59,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:59,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 180 [2022-09-16 11:55:59,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:02,201 INFO L130 PetriNetUnfolder]: 18/696 cut-off events. [2022-09-16 11:56:02,201 INFO L131 PetriNetUnfolder]: For 1316/1316 co-relation queries the response was YES. [2022-09-16 11:56:02,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1841 conditions, 696 events. 18/696 cut-off events. For 1316/1316 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1756 event pairs, 0 based on Foata normal form. 4/700 useless extension candidates. Maximal degree in co-relation 1814. Up to 61 conditions per place. [2022-09-16 11:56:02,203 INFO L137 encePairwiseOnDemand]: 162/180 looper letters, 0 selfloop transitions, 0 changer transitions 360/360 dead transitions. [2022-09-16 11:56:02,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 360 transitions, 2361 flow [2022-09-16 11:56:02,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-09-16 11:56:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2022-09-16 11:56:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 15051 transitions. [2022-09-16 11:56:02,212 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7086158192090396 [2022-09-16 11:56:02,212 INFO L72 ComplementDD]: Start complementDD. Operand 118 states and 15051 transitions. [2022-09-16 11:56:02,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 15051 transitions. [2022-09-16 11:56:02,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:02,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 118 states and 15051 transitions. [2022-09-16 11:56:02,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 119 states, 118 states have (on average 127.55084745762711) internal successors, (15051), 118 states have internal predecessors, (15051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:02,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 119 states, 119 states have (on average 180.0) internal successors, (21420), 119 states have internal predecessors, (21420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:02,249 INFO L81 ComplementDD]: Finished complementDD. Result has 119 states, 119 states have (on average 180.0) internal successors, (21420), 119 states have internal predecessors, (21420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:02,249 INFO L175 Difference]: Start difference. First operand has 329 places, 205 transitions, 1155 flow. Second operand 118 states and 15051 transitions. [2022-09-16 11:56:02,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 360 transitions, 2361 flow [2022-09-16 11:56:02,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 360 transitions, 2262 flow, removed 0 selfloop flow, removed 21 redundant places. [2022-09-16 11:56:02,256 INFO L231 Difference]: Finished difference. Result has 296 places, 0 transitions, 0 flow [2022-09-16 11:56:02,257 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=118, PETRI_FLOW=0, PETRI_PLACES=296, PETRI_TRANSITIONS=0} [2022-09-16 11:56:02,257 INFO L287 CegarLoopForPetriNet]: 154 programPoint places, 142 predicate places. [2022-09-16 11:56:02,257 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 0 transitions, 0 flow [2022-09-16 11:56:02,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 128.97368421052633) internal successors, (4901), 38 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:02,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2022-09-16 11:56:02,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-09-16 11:56:02,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-09-16 11:56:02,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-09-16 11:56:02,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-09-16 11:56:02,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2022-09-16 11:56:02,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2022-09-16 11:56:02,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2022-09-16 11:56:02,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2022-09-16 11:56:02,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2022-09-16 11:56:02,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-09-16 11:56:02,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-09-16 11:56:02,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-09-16 11:56:02,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-09-16 11:56:02,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-09-16 11:56:02,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:02,478 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:56:02,482 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:56:02,482 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:56:02,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:56:02 BasicIcfg [2022-09-16 11:56:02,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:56:02,486 INFO L158 Benchmark]: Toolchain (without parser) took 58185.85ms. Allocated memory was 173.0MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 143.6MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2022-09-16 11:56:02,486 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 173.0MB. Free memory was 130.6MB in the beginning and 130.6MB in the end (delta: 70.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:56:02,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.79ms. Allocated memory was 173.0MB in the beginning and 212.9MB in the end (delta: 39.8MB). Free memory was 143.4MB in the beginning and 185.3MB in the end (delta: -41.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-09-16 11:56:02,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.03ms. Allocated memory is still 212.9MB. Free memory was 185.2MB in the beginning and 183.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:56:02,486 INFO L158 Benchmark]: Boogie Preprocessor took 28.14ms. Allocated memory is still 212.9MB. Free memory was 183.0MB in the beginning and 181.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:56:02,487 INFO L158 Benchmark]: RCFGBuilder took 574.30ms. Allocated memory is still 212.9MB. Free memory was 181.4MB in the beginning and 148.9MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-09-16 11:56:02,487 INFO L158 Benchmark]: TraceAbstraction took 57320.49ms. Allocated memory was 212.9MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 148.4MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2022-09-16 11:56:02,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 173.0MB. Free memory was 130.6MB in the beginning and 130.6MB in the end (delta: 70.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 219.79ms. Allocated memory was 173.0MB in the beginning and 212.9MB in the end (delta: 39.8MB). Free memory was 143.4MB in the beginning and 185.3MB in the end (delta: -41.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.03ms. Allocated memory is still 212.9MB. Free memory was 185.2MB in the beginning and 183.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.14ms. Allocated memory is still 212.9MB. Free memory was 183.0MB in the beginning and 181.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 574.30ms. Allocated memory is still 212.9MB. Free memory was 181.4MB in the beginning and 148.9MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 57320.49ms. Allocated memory was 212.9MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 148.4MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: 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: 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 196 locations, 14 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: 57.2s, OverallIterations: 17, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 47.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3733 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3733 mSDsluCounter, 623 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1056 mSDsCounter, 750 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2831 IncrementalHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 750 mSolverCounterUnsat, 138 mSDtfsCounter, 2831 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3363 GetRequests, 2819 SyntacticMatches, 16 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11827 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1635occurred in iteration=15, InterpolantAutomatonStates: 413, 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, 0.7s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 3662 NumberOfCodeBlocks, 3366 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 4818 ConstructedInterpolants, 0 QuantifiedInterpolants, 9252 SizeOfPredicates, 66 NumberOfNonLiveVariables, 3312 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 40 InterpolantComputations, 8 PerfectInterpolantSequences, 2584/4996 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:56:02,534 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...