/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:58:58,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:58:58,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:58:58,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:58:58,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:58:58,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:58:58,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:58:58,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:58:58,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:58:58,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:58:58,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:58:58,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:58:58,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:58:58,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:58:58,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:58:58,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:58:58,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:58:58,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:58:58,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:58:58,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:58:58,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:58:58,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:58:58,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:58:58,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:58:58,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:58:58,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:58:58,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:58:58,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:58:58,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:58:58,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:58:58,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:58:58,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:58:58,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:58:58,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:58:58,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:58:58,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:58:58,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:58:58,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:58:58,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:58:58,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:58:58,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:58:58,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:58:58,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:58:58,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:58:58,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:58:58,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:58:58,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:58:58,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:58:58,633 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:58:58,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:58:58,634 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:58:58,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:58:58,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:58:58,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:58:58,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:58:58,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:58:58,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:58:58,635 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:58:58,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:58:58,635 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:58:58,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:58:58,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:58:58,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:58:58,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:58:58,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:58:58,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:58:58,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:58:58,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:58:58,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:58:58,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:58:58,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:58:58,637 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:58:58,638 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:58:58,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:58:58,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:58:58,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:58:58,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:58:58,911 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:58:58,911 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:58:58,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-09-16 11:58:58,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fa1d23d/35211cecaf6340e79a57c340e895c02d/FLAGce41bf72e [2022-09-16 11:58:59,367 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:58:59,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-09-16 11:58:59,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fa1d23d/35211cecaf6340e79a57c340e895c02d/FLAGce41bf72e [2022-09-16 11:58:59,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fa1d23d/35211cecaf6340e79a57c340e895c02d [2022-09-16 11:58:59,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:58:59,392 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:58:59,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:58:59,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:58:59,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:58:59,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d850aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59, skipping insertion in model container [2022-09-16 11:58:59,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:58:59,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:58:59,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-09-16 11:58:59,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:58:59,684 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:58:59,717 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-09-16 11:58:59,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:58:59,732 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:58:59,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59 WrapperNode [2022-09-16 11:58:59,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:58:59,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:58:59,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:58:59,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:58:59,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,770 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2022-09-16 11:58:59,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:58:59,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:58:59,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:58:59,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:58:59,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:58:59,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:58:59,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:58:59,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:58:59,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59" (1/1) ... [2022-09-16 11:58:59,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:58:59,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:59,846 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 11:58:59,848 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 11:58:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:58:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:58:59,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:58:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:58:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:58:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:58:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:58:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:58:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:58:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:58:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:58:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:58:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:58:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:58:59,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:58:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:58:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:58:59,880 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 11:58:59,958 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:58:59,959 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:59:00,174 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:59:00,216 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:59:00,216 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:59:00,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:59:00 BoogieIcfgContainer [2022-09-16 11:59:00,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:59:00,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:59:00,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:59:00,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:59:00,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:58:59" (1/3) ... [2022-09-16 11:59:00,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6823a389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:59:00, skipping insertion in model container [2022-09-16 11:59:00,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:59" (2/3) ... [2022-09-16 11:59:00,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6823a389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:59:00, skipping insertion in model container [2022-09-16 11:59:00,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:59:00" (3/3) ... [2022-09-16 11:59:00,235 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2022-09-16 11:59:00,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:59:00,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-09-16 11:59:00,253 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:59:00,351 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:59:00,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 160 transitions, 344 flow [2022-09-16 11:59:00,484 INFO L130 PetriNetUnfolder]: 10/157 cut-off events. [2022-09-16 11:59:00,484 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:59:00,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 157 events. 10/157 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 111 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2022-09-16 11:59:00,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 160 transitions, 344 flow [2022-09-16 11:59:00,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 133 transitions, 278 flow [2022-09-16 11:59:00,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:59:00,516 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;@7b68bd65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:59:00,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-09-16 11:59:00,537 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-09-16 11:59:00,537 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:59:00,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:00,538 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] [2022-09-16 11:59:00,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:00,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1206568422, now seen corresponding path program 1 times [2022-09-16 11:59:00,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:00,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856685961] [2022-09-16 11:59:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:00,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:00,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:00,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856685961] [2022-09-16 11:59:00,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856685961] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:00,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:00,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:00,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846063637] [2022-09-16 11:59:00,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:00,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:00,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:00,855 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-09-16 11:59:00,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 133 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:00,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:00,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-09-16 11:59:00,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:01,045 INFO L130 PetriNetUnfolder]: 37/382 cut-off events. [2022-09-16 11:59:01,045 INFO L131 PetriNetUnfolder]: For 40/42 co-relation queries the response was YES. [2022-09-16 11:59:01,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 382 events. 37/382 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1418 event pairs, 14 based on Foata normal form. 36/350 useless extension candidates. Maximal degree in co-relation 294. Up to 41 conditions per place. [2022-09-16 11:59:01,054 INFO L137 encePairwiseOnDemand]: 148/160 looper letters, 28 selfloop transitions, 4 changer transitions 3/141 dead transitions. [2022-09-16 11:59:01,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 141 transitions, 370 flow [2022-09-16 11:59:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:59:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:59:01,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 704 transitions. [2022-09-16 11:59:01,072 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.88 [2022-09-16 11:59:01,072 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 704 transitions. [2022-09-16 11:59:01,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 704 transitions. [2022-09-16 11:59:01,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:01,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 704 transitions. [2022-09-16 11:59:01,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:01,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:01,096 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:01,097 INFO L175 Difference]: Start difference. First operand has 134 places, 133 transitions, 278 flow. Second operand 5 states and 704 transitions. [2022-09-16 11:59:01,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 141 transitions, 370 flow [2022-09-16 11:59:01,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 141 transitions, 358 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:59:01,104 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 284 flow [2022-09-16 11:59:01,106 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2022-09-16 11:59:01,109 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 3 predicate places. [2022-09-16 11:59:01,110 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 284 flow [2022-09-16 11:59:01,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:01,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:01,111 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] [2022-09-16 11:59:01,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:59:01,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:01,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:01,112 INFO L85 PathProgramCache]: Analyzing trace with hash -563421055, now seen corresponding path program 1 times [2022-09-16 11:59:01,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:01,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481615977] [2022-09-16 11:59:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:01,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:01,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:01,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481615977] [2022-09-16 11:59:01,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481615977] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:01,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290886401] [2022-09-16 11:59:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:01,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:01,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:01,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:01,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:59:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:01,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:01,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:01,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:01,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290886401] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:01,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:01,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:59:01,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948650360] [2022-09-16 11:59:01,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:01,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:59:01,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:59:01,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:59:01,580 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-09-16 11:59:01,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 134.66666666666666) internal successors, (1616), 12 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:01,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:01,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-09-16 11:59:01,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:01,984 INFO L130 PetriNetUnfolder]: 91/878 cut-off events. [2022-09-16 11:59:01,984 INFO L131 PetriNetUnfolder]: For 31/36 co-relation queries the response was YES. [2022-09-16 11:59:01,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1158 conditions, 878 events. 91/878 cut-off events. For 31/36 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4781 event pairs, 35 based on Foata normal form. 3/726 useless extension candidates. Maximal degree in co-relation 884. Up to 45 conditions per place. [2022-09-16 11:59:01,995 INFO L137 encePairwiseOnDemand]: 153/160 looper letters, 58 selfloop transitions, 18 changer transitions 0/182 dead transitions. [2022-09-16 11:59:01,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 182 transitions, 592 flow [2022-09-16 11:59:01,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:59:01,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:59:02,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2455 transitions. [2022-09-16 11:59:02,003 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8524305555555556 [2022-09-16 11:59:02,003 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2455 transitions. [2022-09-16 11:59:02,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2455 transitions. [2022-09-16 11:59:02,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:02,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2455 transitions. [2022-09-16 11:59:02,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.38888888888889) internal successors, (2455), 18 states have internal predecessors, (2455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 160.0) internal successors, (3040), 19 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,022 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 160.0) internal successors, (3040), 19 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,022 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 284 flow. Second operand 18 states and 2455 transitions. [2022-09-16 11:59:02,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 182 transitions, 592 flow [2022-09-16 11:59:02,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 182 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:02,030 INFO L231 Difference]: Finished difference. Result has 154 places, 139 transitions, 388 flow [2022-09-16 11:59:02,031 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=388, PETRI_PLACES=154, PETRI_TRANSITIONS=139} [2022-09-16 11:59:02,031 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 20 predicate places. [2022-09-16 11:59:02,032 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 139 transitions, 388 flow [2022-09-16 11:59:02,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 134.66666666666666) internal successors, (1616), 12 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:02,035 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] [2022-09-16 11:59:02,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:02,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:02,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:02,248 INFO L85 PathProgramCache]: Analyzing trace with hash -286183228, now seen corresponding path program 1 times [2022-09-16 11:59:02,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:02,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813919137] [2022-09-16 11:59:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:02,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:02,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:02,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813919137] [2022-09-16 11:59:02,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813919137] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:02,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490747166] [2022-09-16 11:59:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:02,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:02,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:02,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:02,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:59:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:02,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:02,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:02,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:02,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490747166] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:02,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:02,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:59:02,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987990419] [2022-09-16 11:59:02,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:02,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:02,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:02,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:02,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:59:02,505 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-09-16 11:59:02,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 139 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:02,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-09-16 11:59:02,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:02,716 INFO L130 PetriNetUnfolder]: 91/874 cut-off events. [2022-09-16 11:59:02,717 INFO L131 PetriNetUnfolder]: For 67/72 co-relation queries the response was YES. [2022-09-16 11:59:02,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 874 events. 91/874 cut-off events. For 67/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4787 event pairs, 35 based on Foata normal form. 4/723 useless extension candidates. Maximal degree in co-relation 924. Up to 128 conditions per place. [2022-09-16 11:59:02,727 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 29 selfloop transitions, 11 changer transitions 0/146 dead transitions. [2022-09-16 11:59:02,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 146 transitions, 471 flow [2022-09-16 11:59:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:02,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 956 transitions. [2022-09-16 11:59:02,730 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8535714285714285 [2022-09-16 11:59:02,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 956 transitions. [2022-09-16 11:59:02,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 956 transitions. [2022-09-16 11:59:02,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:02,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 956 transitions. [2022-09-16 11:59:02,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.57142857142858) internal successors, (956), 7 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,737 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,737 INFO L175 Difference]: Start difference. First operand has 154 places, 139 transitions, 388 flow. Second operand 7 states and 956 transitions. [2022-09-16 11:59:02,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 146 transitions, 471 flow [2022-09-16 11:59:02,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 146 transitions, 439 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:02,742 INFO L231 Difference]: Finished difference. Result has 150 places, 135 transitions, 351 flow [2022-09-16 11:59:02,743 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=150, PETRI_TRANSITIONS=135} [2022-09-16 11:59:02,744 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 16 predicate places. [2022-09-16 11:59:02,744 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 135 transitions, 351 flow [2022-09-16 11:59:02,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:02,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:02,745 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] [2022-09-16 11:59:02,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:02,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:59:02,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:02,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:02,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1013773231, now seen corresponding path program 1 times [2022-09-16 11:59:02,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:02,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590830006] [2022-09-16 11:59:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:02,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:03,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:03,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590830006] [2022-09-16 11:59:03,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590830006] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:03,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:03,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:03,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260047565] [2022-09-16 11:59:03,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:03,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:03,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:03,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:03,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:03,051 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 160 [2022-09-16 11:59:03,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 135 transitions, 351 flow. Second operand has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:03,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 160 [2022-09-16 11:59:03,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:03,353 INFO L130 PetriNetUnfolder]: 691/2049 cut-off events. [2022-09-16 11:59:03,353 INFO L131 PetriNetUnfolder]: For 42/67 co-relation queries the response was YES. [2022-09-16 11:59:03,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3853 conditions, 2049 events. 691/2049 cut-off events. For 42/67 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 14529 event pairs, 125 based on Foata normal form. 5/1714 useless extension candidates. Maximal degree in co-relation 3072. Up to 681 conditions per place. [2022-09-16 11:59:03,373 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 30 selfloop transitions, 4 changer transitions 0/153 dead transitions. [2022-09-16 11:59:03,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 153 transitions, 468 flow [2022-09-16 11:59:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:59:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:59:03,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 706 transitions. [2022-09-16 11:59:03,376 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8825 [2022-09-16 11:59:03,376 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 706 transitions. [2022-09-16 11:59:03,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 706 transitions. [2022-09-16 11:59:03,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:03,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 706 transitions. [2022-09-16 11:59:03,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,380 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,380 INFO L175 Difference]: Start difference. First operand has 150 places, 135 transitions, 351 flow. Second operand 5 states and 706 transitions. [2022-09-16 11:59:03,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 153 transitions, 468 flow [2022-09-16 11:59:03,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 153 transitions, 454 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:03,387 INFO L231 Difference]: Finished difference. Result has 152 places, 138 transitions, 367 flow [2022-09-16 11:59:03,388 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=152, PETRI_TRANSITIONS=138} [2022-09-16 11:59:03,389 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 18 predicate places. [2022-09-16 11:59:03,389 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 138 transitions, 367 flow [2022-09-16 11:59:03,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:03,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:03,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:59:03,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1793086727, now seen corresponding path program 1 times [2022-09-16 11:59:03,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:03,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740673140] [2022-09-16 11:59:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:03,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:03,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:03,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740673140] [2022-09-16 11:59:03,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740673140] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:03,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:03,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:03,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168036584] [2022-09-16 11:59:03,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:03,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:03,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:03,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:03,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:03,451 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 160 [2022-09-16 11:59:03,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 138 transitions, 367 flow. Second operand has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:03,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 160 [2022-09-16 11:59:03,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:03,881 INFO L130 PetriNetUnfolder]: 886/2774 cut-off events. [2022-09-16 11:59:03,882 INFO L131 PetriNetUnfolder]: For 242/247 co-relation queries the response was YES. [2022-09-16 11:59:03,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5239 conditions, 2774 events. 886/2774 cut-off events. For 242/247 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 23996 event pairs, 435 based on Foata normal form. 0/2484 useless extension candidates. Maximal degree in co-relation 4179. Up to 966 conditions per place. [2022-09-16 11:59:03,909 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 29 selfloop transitions, 4 changer transitions 0/155 dead transitions. [2022-09-16 11:59:03,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 155 transitions, 476 flow [2022-09-16 11:59:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:59:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:59:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 705 transitions. [2022-09-16 11:59:03,912 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.88125 [2022-09-16 11:59:03,912 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 705 transitions. [2022-09-16 11:59:03,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 705 transitions. [2022-09-16 11:59:03,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:03,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 705 transitions. [2022-09-16 11:59:03,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,917 INFO L175 Difference]: Start difference. First operand has 152 places, 138 transitions, 367 flow. Second operand 5 states and 705 transitions. [2022-09-16 11:59:03,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 155 transitions, 476 flow [2022-09-16 11:59:03,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 155 transitions, 474 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:03,921 INFO L231 Difference]: Finished difference. Result has 158 places, 141 transitions, 395 flow [2022-09-16 11:59:03,922 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=158, PETRI_TRANSITIONS=141} [2022-09-16 11:59:03,922 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 24 predicate places. [2022-09-16 11:59:03,923 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 141 transitions, 395 flow [2022-09-16 11:59:03,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:03,923 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] [2022-09-16 11:59:03,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:59:03,924 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:03,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:03,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1590183433, now seen corresponding path program 1 times [2022-09-16 11:59:03,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:03,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728131368] [2022-09-16 11:59:03,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:03,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:03,993 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 11:59:03,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:03,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728131368] [2022-09-16 11:59:03,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728131368] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:03,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922585415] [2022-09-16 11:59:03,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:03,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:03,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:03,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:03,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:59:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:04,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:59:04,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:59:04,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:04,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922585415] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:04,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:04,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:59:04,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133824187] [2022-09-16 11:59:04,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:04,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:59:04,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:04,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:59:04,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:59:04,197 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 160 [2022-09-16 11:59:04,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 141 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:04,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 160 [2022-09-16 11:59:04,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:04,828 INFO L130 PetriNetUnfolder]: 1195/4059 cut-off events. [2022-09-16 11:59:04,828 INFO L131 PetriNetUnfolder]: For 774/774 co-relation queries the response was YES. [2022-09-16 11:59:04,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8509 conditions, 4059 events. 1195/4059 cut-off events. For 774/774 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 36060 event pairs, 958 based on Foata normal form. 0/3551 useless extension candidates. Maximal degree in co-relation 8008. Up to 1837 conditions per place. [2022-09-16 11:59:04,872 INFO L137 encePairwiseOnDemand]: 151/160 looper letters, 46 selfloop transitions, 8 changer transitions 2/159 dead transitions. [2022-09-16 11:59:04,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 159 transitions, 555 flow [2022-09-16 11:59:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:59:04,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:59:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1025 transitions. [2022-09-16 11:59:04,875 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.80078125 [2022-09-16 11:59:04,875 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1025 transitions. [2022-09-16 11:59:04,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1025 transitions. [2022-09-16 11:59:04,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:04,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1025 transitions. [2022-09-16 11:59:04,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.125) internal successors, (1025), 8 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 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 11:59:04,882 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 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 11:59:04,882 INFO L175 Difference]: Start difference. First operand has 158 places, 141 transitions, 395 flow. Second operand 8 states and 1025 transitions. [2022-09-16 11:59:04,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 159 transitions, 555 flow [2022-09-16 11:59:04,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 159 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:04,891 INFO L231 Difference]: Finished difference. Result has 167 places, 143 transitions, 427 flow [2022-09-16 11:59:04,892 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=427, PETRI_PLACES=167, PETRI_TRANSITIONS=143} [2022-09-16 11:59:04,892 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 33 predicate places. [2022-09-16 11:59:04,892 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 143 transitions, 427 flow [2022-09-16 11:59:04,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:04,893 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] [2022-09-16 11:59:04,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:05,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:05,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:05,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:05,123 INFO L85 PathProgramCache]: Analyzing trace with hash 444222767, now seen corresponding path program 1 times [2022-09-16 11:59:05,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:05,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523306320] [2022-09-16 11:59:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:05,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:05,198 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 11:59:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:05,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523306320] [2022-09-16 11:59:05,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523306320] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:05,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916434431] [2022-09-16 11:59:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:05,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:05,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:05,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:05,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:59:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:05,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:59:05,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:59:05,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:05,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916434431] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:05,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:05,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:59:05,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44752801] [2022-09-16 11:59:05,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:05,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:59:05,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:05,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:59:05,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:59:05,390 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 160 [2022-09-16 11:59:05,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 143 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:05,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 160 [2022-09-16 11:59:05,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:05,924 INFO L130 PetriNetUnfolder]: 1061/3084 cut-off events. [2022-09-16 11:59:05,924 INFO L131 PetriNetUnfolder]: For 764/770 co-relation queries the response was YES. [2022-09-16 11:59:05,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6773 conditions, 3084 events. 1061/3084 cut-off events. For 764/770 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 25373 event pairs, 977 based on Foata normal form. 6/2796 useless extension candidates. Maximal degree in co-relation 6521. Up to 1797 conditions per place. [2022-09-16 11:59:05,962 INFO L137 encePairwiseOnDemand]: 151/160 looper letters, 34 selfloop transitions, 6 changer transitions 13/156 dead transitions. [2022-09-16 11:59:05,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 156 transitions, 568 flow [2022-09-16 11:59:05,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:59:05,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:59:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2022-09-16 11:59:05,966 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.79765625 [2022-09-16 11:59:05,966 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2022-09-16 11:59:05,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2022-09-16 11:59:05,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:05,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2022-09-16 11:59:05,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 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 11:59:05,972 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 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 11:59:05,972 INFO L175 Difference]: Start difference. First operand has 167 places, 143 transitions, 427 flow. Second operand 8 states and 1021 transitions. [2022-09-16 11:59:05,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 156 transitions, 568 flow [2022-09-16 11:59:05,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 156 transitions, 558 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:59:05,982 INFO L231 Difference]: Finished difference. Result has 172 places, 141 transitions, 419 flow [2022-09-16 11:59:05,982 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=419, PETRI_PLACES=172, PETRI_TRANSITIONS=141} [2022-09-16 11:59:05,983 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 38 predicate places. [2022-09-16 11:59:05,983 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 141 transitions, 419 flow [2022-09-16 11:59:05,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:05,984 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] [2022-09-16 11:59:06,010 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 11:59:06,204 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 11:59:06,205 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:06,205 INFO L85 PathProgramCache]: Analyzing trace with hash 591751846, now seen corresponding path program 2 times [2022-09-16 11:59:06,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:06,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890807734] [2022-09-16 11:59:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:06,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:06,321 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 11:59:06,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:06,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890807734] [2022-09-16 11:59:06,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890807734] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:06,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883918618] [2022-09-16 11:59:06,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:06,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:06,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:06,324 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 11:59:06,325 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 11:59:06,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:06,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:06,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:59:06,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:06,543 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 11:59:06,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:06,653 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 11:59:06,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883918618] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:06,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:06,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:59:06,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886226302] [2022-09-16 11:59:06,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:06,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:59:06,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:06,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:59:06,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:59:06,658 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 160 [2022-09-16 11:59:06,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 141 transitions, 419 flow. Second operand has 18 states, 18 states have (on average 120.61111111111111) internal successors, (2171), 18 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:06,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 160 [2022-09-16 11:59:06,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:07,729 INFO L130 PetriNetUnfolder]: 955/3843 cut-off events. [2022-09-16 11:59:07,730 INFO L131 PetriNetUnfolder]: For 770/770 co-relation queries the response was YES. [2022-09-16 11:59:07,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7857 conditions, 3843 events. 955/3843 cut-off events. For 770/770 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 34476 event pairs, 828 based on Foata normal form. 2/3695 useless extension candidates. Maximal degree in co-relation 7754. Up to 385 conditions per place. [2022-09-16 11:59:07,773 INFO L137 encePairwiseOnDemand]: 149/160 looper letters, 102 selfloop transitions, 25 changer transitions 0/224 dead transitions. [2022-09-16 11:59:07,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 224 transitions, 913 flow [2022-09-16 11:59:07,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:59:07,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 11:59:07,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2937 transitions. [2022-09-16 11:59:07,781 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.76484375 [2022-09-16 11:59:07,781 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2937 transitions. [2022-09-16 11:59:07,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2937 transitions. [2022-09-16 11:59:07,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:07,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2937 transitions. [2022-09-16 11:59:07,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 122.375) internal successors, (2937), 24 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,797 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,798 INFO L175 Difference]: Start difference. First operand has 172 places, 141 transitions, 419 flow. Second operand 24 states and 2937 transitions. [2022-09-16 11:59:07,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 224 transitions, 913 flow [2022-09-16 11:59:07,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 224 transitions, 863 flow, removed 14 selfloop flow, removed 14 redundant places. [2022-09-16 11:59:07,808 INFO L231 Difference]: Finished difference. Result has 177 places, 145 transitions, 458 flow [2022-09-16 11:59:07,809 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=458, PETRI_PLACES=177, PETRI_TRANSITIONS=145} [2022-09-16 11:59:07,809 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 43 predicate places. [2022-09-16 11:59:07,809 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 145 transitions, 458 flow [2022-09-16 11:59:07,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 120.61111111111111) internal successors, (2171), 18 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:07,811 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] [2022-09-16 11:59:07,833 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 11:59:08,023 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 11:59:08,024 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:08,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1440528932, now seen corresponding path program 1 times [2022-09-16 11:59:08,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:08,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909245493] [2022-09-16 11:59:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:08,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:08,077 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 11:59:08,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:08,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909245493] [2022-09-16 11:59:08,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909245493] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:08,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277989861] [2022-09-16 11:59:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:08,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:08,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:08,080 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 11:59:08,087 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 11:59:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:08,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:59:08,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:08,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:08,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:08,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277989861] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:08,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:08,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-09-16 11:59:08,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383438935] [2022-09-16 11:59:08,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:08,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:59:08,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:08,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:59:08,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:59:08,623 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 160 [2022-09-16 11:59:08,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 145 transitions, 458 flow. Second operand has 23 states, 23 states have (on average 115.65217391304348) internal successors, (2660), 23 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:08,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:08,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 160 [2022-09-16 11:59:08,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:10,325 INFO L130 PetriNetUnfolder]: 3170/7698 cut-off events. [2022-09-16 11:59:10,325 INFO L131 PetriNetUnfolder]: For 664/769 co-relation queries the response was YES. [2022-09-16 11:59:10,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17555 conditions, 7698 events. 3170/7698 cut-off events. For 664/769 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 69176 event pairs, 1019 based on Foata normal form. 110/6713 useless extension candidates. Maximal degree in co-relation 9987. Up to 1604 conditions per place. [2022-09-16 11:59:10,399 INFO L137 encePairwiseOnDemand]: 142/160 looper letters, 129 selfloop transitions, 32 changer transitions 9/259 dead transitions. [2022-09-16 11:59:10,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 259 transitions, 1121 flow [2022-09-16 11:59:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-09-16 11:59:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-09-16 11:59:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2960 transitions. [2022-09-16 11:59:10,408 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.74 [2022-09-16 11:59:10,408 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2960 transitions. [2022-09-16 11:59:10,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2960 transitions. [2022-09-16 11:59:10,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:10,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2960 transitions. [2022-09-16 11:59:10,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 118.4) internal successors, (2960), 25 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,426 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,426 INFO L175 Difference]: Start difference. First operand has 177 places, 145 transitions, 458 flow. Second operand 25 states and 2960 transitions. [2022-09-16 11:59:10,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 259 transitions, 1121 flow [2022-09-16 11:59:10,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 259 transitions, 1063 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-09-16 11:59:10,466 INFO L231 Difference]: Finished difference. Result has 190 places, 159 transitions, 559 flow [2022-09-16 11:59:10,467 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=559, PETRI_PLACES=190, PETRI_TRANSITIONS=159} [2022-09-16 11:59:10,467 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 56 predicate places. [2022-09-16 11:59:10,468 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 159 transitions, 559 flow [2022-09-16 11:59:10,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 115.65217391304348) internal successors, (2660), 23 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:10,469 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] [2022-09-16 11:59:10,500 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 11:59:10,679 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 11:59:10,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:10,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:10,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1504706826, now seen corresponding path program 1 times [2022-09-16 11:59:10,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:10,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945616961] [2022-09-16 11:59:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:10,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:10,754 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 11:59:10,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:10,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945616961] [2022-09-16 11:59:10,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945616961] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:10,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128349413] [2022-09-16 11:59:10,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:10,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:10,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:10,757 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 11:59:10,758 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 11:59:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:10,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:59:10,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:11,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:11,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128349413] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:11,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:11,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-09-16 11:59:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252214386] [2022-09-16 11:59:11,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:11,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:59:11,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:11,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:59:11,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:59:11,305 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 160 [2022-09-16 11:59:11,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 159 transitions, 559 flow. Second operand has 23 states, 23 states have (on average 115.73913043478261) internal successors, (2662), 23 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:11,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:11,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 160 [2022-09-16 11:59:11,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:13,287 INFO L130 PetriNetUnfolder]: 4564/10221 cut-off events. [2022-09-16 11:59:13,287 INFO L131 PetriNetUnfolder]: For 2974/3766 co-relation queries the response was YES. [2022-09-16 11:59:13,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26000 conditions, 10221 events. 4564/10221 cut-off events. For 2974/3766 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 96574 event pairs, 1053 based on Foata normal form. 907/10613 useless extension candidates. Maximal degree in co-relation 17962. Up to 2554 conditions per place. [2022-09-16 11:59:13,471 INFO L137 encePairwiseOnDemand]: 142/160 looper letters, 105 selfloop transitions, 26 changer transitions 66/290 dead transitions. [2022-09-16 11:59:13,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 290 transitions, 1405 flow [2022-09-16 11:59:13,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-09-16 11:59:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-09-16 11:59:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2957 transitions. [2022-09-16 11:59:13,478 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.73925 [2022-09-16 11:59:13,479 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2957 transitions. [2022-09-16 11:59:13,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2957 transitions. [2022-09-16 11:59:13,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:13,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2957 transitions. [2022-09-16 11:59:13,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 118.28) internal successors, (2957), 25 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:13,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:13,495 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:13,495 INFO L175 Difference]: Start difference. First operand has 190 places, 159 transitions, 559 flow. Second operand 25 states and 2957 transitions. [2022-09-16 11:59:13,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 290 transitions, 1405 flow [2022-09-16 11:59:13,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 290 transitions, 1368 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-09-16 11:59:13,513 INFO L231 Difference]: Finished difference. Result has 209 places, 158 transitions, 591 flow [2022-09-16 11:59:13,514 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=591, PETRI_PLACES=209, PETRI_TRANSITIONS=158} [2022-09-16 11:59:13,515 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 75 predicate places. [2022-09-16 11:59:13,515 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 158 transitions, 591 flow [2022-09-16 11:59:13,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 115.73913043478261) internal successors, (2662), 23 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:13,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:13,517 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:13,547 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 11:59:13,734 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 11:59:13,735 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash -387130772, now seen corresponding path program 1 times [2022-09-16 11:59:13,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:13,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525768559] [2022-09-16 11:59:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:13,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:59:13,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:13,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525768559] [2022-09-16 11:59:13,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525768559] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:13,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387469855] [2022-09-16 11:59:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:13,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:13,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:13,809 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 11:59:13,810 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 11:59:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:13,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:13,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:59:13,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:13,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387469855] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:13,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:13,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:59:13,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149698155] [2022-09-16 11:59:13,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:13,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:13,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:13,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:13,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:59:13,929 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 160 [2022-09-16 11:59:13,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 158 transitions, 591 flow. Second operand has 6 states, 6 states have (on average 136.33333333333334) internal successors, (818), 6 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:13,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:13,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 160 [2022-09-16 11:59:13,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:14,647 INFO L130 PetriNetUnfolder]: 1491/3669 cut-off events. [2022-09-16 11:59:14,647 INFO L131 PetriNetUnfolder]: For 1110/1110 co-relation queries the response was YES. [2022-09-16 11:59:14,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9576 conditions, 3669 events. 1491/3669 cut-off events. For 1110/1110 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 31335 event pairs, 15 based on Foata normal form. 90/3589 useless extension candidates. Maximal degree in co-relation 7203. Up to 915 conditions per place. [2022-09-16 11:59:14,678 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 35 selfloop transitions, 8 changer transitions 0/176 dead transitions. [2022-09-16 11:59:14,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 176 transitions, 726 flow [2022-09-16 11:59:14,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 978 transitions. [2022-09-16 11:59:14,680 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8732142857142857 [2022-09-16 11:59:14,680 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 978 transitions. [2022-09-16 11:59:14,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 978 transitions. [2022-09-16 11:59:14,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:14,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 978 transitions. [2022-09-16 11:59:14,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.71428571428572) internal successors, (978), 7 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:14,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:14,683 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:14,683 INFO L175 Difference]: Start difference. First operand has 209 places, 158 transitions, 591 flow. Second operand 7 states and 978 transitions. [2022-09-16 11:59:14,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 176 transitions, 726 flow [2022-09-16 11:59:14,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 176 transitions, 685 flow, removed 6 selfloop flow, removed 14 redundant places. [2022-09-16 11:59:14,695 INFO L231 Difference]: Finished difference. Result has 188 places, 156 transitions, 554 flow [2022-09-16 11:59:14,695 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=554, PETRI_PLACES=188, PETRI_TRANSITIONS=156} [2022-09-16 11:59:14,696 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 54 predicate places. [2022-09-16 11:59:14,696 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 156 transitions, 554 flow [2022-09-16 11:59:14,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.33333333333334) internal successors, (818), 6 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:14,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:14,697 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:14,724 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 11:59:14,911 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 11:59:14,911 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:14,912 INFO L85 PathProgramCache]: Analyzing trace with hash -337587471, now seen corresponding path program 2 times [2022-09-16 11:59:14,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:14,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619744372] [2022-09-16 11:59:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:15,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:15,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619744372] [2022-09-16 11:59:15,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619744372] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:15,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548645506] [2022-09-16 11:59:15,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:15,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:15,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:15,093 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 11:59:15,095 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 11:59:15,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:15,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:15,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:15,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-16 11:59:15,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-16 11:59:15,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548645506] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:15,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:15,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-09-16 11:59:15,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156560201] [2022-09-16 11:59:15,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:15,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:59:15,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:15,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:59:15,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:59:15,434 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 160 [2022-09-16 11:59:15,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 156 transitions, 554 flow. Second operand has 19 states, 19 states have (on average 113.21052631578948) internal successors, (2151), 19 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:15,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:15,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 160 [2022-09-16 11:59:15,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:17,340 INFO L130 PetriNetUnfolder]: 3649/9454 cut-off events. [2022-09-16 11:59:17,340 INFO L131 PetriNetUnfolder]: For 5019/5536 co-relation queries the response was YES. [2022-09-16 11:59:17,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25082 conditions, 9454 events. 3649/9454 cut-off events. For 5019/5536 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 92975 event pairs, 825 based on Foata normal form. 590/9812 useless extension candidates. Maximal degree in co-relation 17813. Up to 1800 conditions per place. [2022-09-16 11:59:17,412 INFO L137 encePairwiseOnDemand]: 142/160 looper letters, 121 selfloop transitions, 38 changer transitions 50/297 dead transitions. [2022-09-16 11:59:17,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 297 transitions, 1499 flow [2022-09-16 11:59:17,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:59:17,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-16 11:59:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3431 transitions. [2022-09-16 11:59:17,418 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7147916666666667 [2022-09-16 11:59:17,418 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3431 transitions. [2022-09-16 11:59:17,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3431 transitions. [2022-09-16 11:59:17,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:17,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3431 transitions. [2022-09-16 11:59:17,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 114.36666666666666) internal successors, (3431), 30 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:17,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:17,435 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:17,435 INFO L175 Difference]: Start difference. First operand has 188 places, 156 transitions, 554 flow. Second operand 30 states and 3431 transitions. [2022-09-16 11:59:17,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 297 transitions, 1499 flow [2022-09-16 11:59:17,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 297 transitions, 1473 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-09-16 11:59:17,478 INFO L231 Difference]: Finished difference. Result has 213 places, 162 transitions, 678 flow [2022-09-16 11:59:17,478 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=678, PETRI_PLACES=213, PETRI_TRANSITIONS=162} [2022-09-16 11:59:17,480 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 79 predicate places. [2022-09-16 11:59:17,481 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 162 transitions, 678 flow [2022-09-16 11:59:17,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 113.21052631578948) internal successors, (2151), 19 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:17,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:17,482 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:17,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-09-16 11:59:17,707 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 11:59:17,708 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:17,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:17,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1511587820, now seen corresponding path program 1 times [2022-09-16 11:59:17,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:17,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994721133] [2022-09-16 11:59:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:59:17,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:17,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994721133] [2022-09-16 11:59:17,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994721133] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:17,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23034173] [2022-09-16 11:59:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:17,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:17,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:17,778 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 11:59:17,800 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 11:59:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:17,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:17,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:59:17,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:17,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23034173] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:17,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:17,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:59:17,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977406650] [2022-09-16 11:59:17,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:17,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:17,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:17,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:17,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:59:17,901 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 160 [2022-09-16 11:59:17,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 162 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:17,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:17,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 160 [2022-09-16 11:59:17,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:18,456 INFO L130 PetriNetUnfolder]: 1458/3869 cut-off events. [2022-09-16 11:59:18,456 INFO L131 PetriNetUnfolder]: For 1720/1725 co-relation queries the response was YES. [2022-09-16 11:59:18,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9408 conditions, 3869 events. 1458/3869 cut-off events. For 1720/1725 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 35417 event pairs, 164 based on Foata normal form. 106/3878 useless extension candidates. Maximal degree in co-relation 6878. Up to 1035 conditions per place. [2022-09-16 11:59:18,486 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 31 selfloop transitions, 8 changer transitions 0/179 dead transitions. [2022-09-16 11:59:18,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 179 transitions, 795 flow [2022-09-16 11:59:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 975 transitions. [2022-09-16 11:59:18,488 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8705357142857143 [2022-09-16 11:59:18,489 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 975 transitions. [2022-09-16 11:59:18,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 975 transitions. [2022-09-16 11:59:18,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:18,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 975 transitions. [2022-09-16 11:59:18,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:18,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:18,492 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:18,492 INFO L175 Difference]: Start difference. First operand has 213 places, 162 transitions, 678 flow. Second operand 7 states and 975 transitions. [2022-09-16 11:59:18,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 179 transitions, 795 flow [2022-09-16 11:59:18,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 179 transitions, 745 flow, removed 3 selfloop flow, removed 14 redundant places. [2022-09-16 11:59:18,506 INFO L231 Difference]: Finished difference. Result has 198 places, 160 transitions, 630 flow [2022-09-16 11:59:18,507 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=630, PETRI_PLACES=198, PETRI_TRANSITIONS=160} [2022-09-16 11:59:18,507 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 64 predicate places. [2022-09-16 11:59:18,507 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 160 transitions, 630 flow [2022-09-16 11:59:18,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:18,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:18,508 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:18,537 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 11:59:18,714 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 11:59:18,714 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:59:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:18,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1682845735, now seen corresponding path program 2 times [2022-09-16 11:59:18,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:18,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271593456] [2022-09-16 11:59:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:18,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:18,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:18,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271593456] [2022-09-16 11:59:18,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271593456] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:18,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085676726] [2022-09-16 11:59:18,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:18,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:18,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:18,881 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 11:59:18,910 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 11:59:18,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:18,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:18,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:18,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-16 11:59:19,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-16 11:59:19,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085676726] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:19,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:19,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-09-16 11:59:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312638978] [2022-09-16 11:59:19,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:19,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:59:19,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:19,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:59:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:59:19,290 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 160 [2022-09-16 11:59:19,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 160 transitions, 630 flow. Second operand has 19 states, 19 states have (on average 113.3157894736842) internal successors, (2153), 19 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:19,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:19,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 160 [2022-09-16 11:59:19,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:20,693 INFO L130 PetriNetUnfolder]: 3170/7398 cut-off events. [2022-09-16 11:59:20,693 INFO L131 PetriNetUnfolder]: For 6700/8098 co-relation queries the response was YES. [2022-09-16 11:59:20,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21704 conditions, 7398 events. 3170/7398 cut-off events. For 6700/8098 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 66942 event pairs, 712 based on Foata normal form. 1509/8774 useless extension candidates. Maximal degree in co-relation 15087. Up to 1944 conditions per place. [2022-09-16 11:59:20,729 INFO L137 encePairwiseOnDemand]: 143/160 looper letters, 0 selfloop transitions, 0 changer transitions 266/266 dead transitions. [2022-09-16 11:59:20,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 266 transitions, 1474 flow [2022-09-16 11:59:20,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-16 11:59:20,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-09-16 11:59:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2967 transitions. [2022-09-16 11:59:20,733 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7132211538461538 [2022-09-16 11:59:20,733 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2967 transitions. [2022-09-16 11:59:20,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2967 transitions. [2022-09-16 11:59:20,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:20,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2967 transitions. [2022-09-16 11:59:20,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 114.11538461538461) internal successors, (2967), 26 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:20,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:20,740 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:20,740 INFO L175 Difference]: Start difference. First operand has 198 places, 160 transitions, 630 flow. Second operand 26 states and 2967 transitions. [2022-09-16 11:59:20,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 266 transitions, 1474 flow [2022-09-16 11:59:20,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 266 transitions, 1448 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-09-16 11:59:20,765 INFO L231 Difference]: Finished difference. Result has 216 places, 0 transitions, 0 flow [2022-09-16 11:59:20,766 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=0, PETRI_PLACES=216, PETRI_TRANSITIONS=0} [2022-09-16 11:59:20,766 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 82 predicate places. [2022-09-16 11:59:20,766 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 0 transitions, 0 flow [2022-09-16 11:59:20,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 113.3157894736842) internal successors, (2153), 19 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:20,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2022-09-16 11:59:20,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-09-16 11:59:20,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-09-16 11:59:20,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-09-16 11:59:20,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-09-16 11:59:20,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-09-16 11:59:20,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2022-09-16 11:59:20,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2022-09-16 11:59:20,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2022-09-16 11:59:20,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-09-16 11:59:20,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-09-16 11:59:20,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-09-16 11:59:20,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-09-16 11:59:20,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-09-16 11:59:20,979 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 11:59:20,980 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:20,984 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:59:20,985 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:59:20,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:59:20 BasicIcfg [2022-09-16 11:59:20,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:59:20,989 INFO L158 Benchmark]: Toolchain (without parser) took 21597.83ms. Allocated memory was 189.8MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 130.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 597.4MB. Max. memory is 8.0GB. [2022-09-16 11:59:20,990 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:59:20,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.08ms. Allocated memory is still 189.8MB. Free memory was 130.7MB in the beginning and 161.3MB in the end (delta: -30.6MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2022-09-16 11:59:20,996 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.25ms. Allocated memory is still 189.8MB. Free memory was 161.3MB in the beginning and 159.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:59:20,997 INFO L158 Benchmark]: Boogie Preprocessor took 40.30ms. Allocated memory is still 189.8MB. Free memory was 159.7MB in the beginning and 158.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:59:20,997 INFO L158 Benchmark]: RCFGBuilder took 405.62ms. Allocated memory is still 189.8MB. Free memory was 158.1MB in the beginning and 139.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-09-16 11:59:20,997 INFO L158 Benchmark]: TraceAbstraction took 20769.13ms. Allocated memory was 189.8MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 138.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 605.6MB. Max. memory is 8.0GB. [2022-09-16 11:59:20,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 339.08ms. Allocated memory is still 189.8MB. Free memory was 130.7MB in the beginning and 161.3MB in the end (delta: -30.6MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.25ms. Allocated memory is still 189.8MB. Free memory was 161.3MB in the beginning and 159.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.30ms. Allocated memory is still 189.8MB. Free memory was 159.7MB in the beginning and 158.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 405.62ms. Allocated memory is still 189.8MB. Free memory was 158.1MB in the beginning and 139.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 20769.13ms. Allocated memory was 189.8MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 138.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 605.6MB. 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: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: 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 7 procedures, 184 locations, 13 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: 20.6s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2482 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2482 mSDsluCounter, 499 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1304 mSDsCounter, 211 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3358 IncrementalHoareTripleChecker+Invalid, 3569 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 211 mSolverCounterUnsat, 90 mSDtfsCounter, 3358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1715 GetRequests, 1417 SyntacticMatches, 13 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=678occurred in iteration=12, InterpolantAutomatonStates: 200, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 2116 NumberOfCodeBlocks, 2016 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2622 ConstructedInterpolants, 0 QuantifiedInterpolants, 5684 SizeOfPredicates, 54 NumberOfNonLiveVariables, 2021 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 31 InterpolantComputations, 8 PerfectInterpolantSequences, 299/532 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:59:21,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...