/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-min-max-inc-dec.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:56:13,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:56:13,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:56:13,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:56:13,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:56:13,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:56:13,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:56:13,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:56:13,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:56:13,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:56:13,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:56:13,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:56:13,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:56:13,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:56:13,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:56:13,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:56:13,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:56:13,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:56:13,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:56:13,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:56:13,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:56:13,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:56:13,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:56:13,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:56:13,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:56:13,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:56:13,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:56:13,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:56:13,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:56:13,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:56:13,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:56:13,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:56:13,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:56:13,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:56:13,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:56:13,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:56:13,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:56:13,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:56:13,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:56:13,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:56:13,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:56:13,698 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 11:56:13,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:56:13,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:56:13,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:56:13,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:56:13,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:56:13,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:56:13,732 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:56:13,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:56:13,732 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:56:13,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:56:13,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:56:13,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:56:13,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:56:13,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:56:13,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:56:13,734 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:56:13,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:56:13,734 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:56:13,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:56:13,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:56:13,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:56:13,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:56:13,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:56:13,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:56:13,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:56:13,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:56:13,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:56:13,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:56:13,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:56:13,737 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:56:13,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:56:13,737 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:56:13,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:56:14,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:56:14,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:56:14,009 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:56:14,010 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:56:14,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2022-09-16 11:56:14,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101e46cc0/7a82c1c5baba4230a5d3eab4893dde8d/FLAG461f00a88 [2022-09-16 11:56:14,497 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:56:14,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2022-09-16 11:56:14,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101e46cc0/7a82c1c5baba4230a5d3eab4893dde8d/FLAG461f00a88 [2022-09-16 11:56:14,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101e46cc0/7a82c1c5baba4230a5d3eab4893dde8d [2022-09-16 11:56:14,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:56:14,897 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:56:14,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:56:14,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:56:14,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:56:14,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:56:14" (1/1) ... [2022-09-16 11:56:14,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2714349a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:14, skipping insertion in model container [2022-09-16 11:56:14,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:56:14" (1/1) ... [2022-09-16 11:56:14,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:56:14,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:56:15,142 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-09-16 11:56:15,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:56:15,154 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:56:15,179 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-min-max-inc-dec.wvr.c[3271,3284] [2022-09-16 11:56:15,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:56:15,195 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:56:15,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:15 WrapperNode [2022-09-16 11:56:15,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:56:15,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:56:15,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:56:15,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:56:15,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:15" (1/1) ... [2022-09-16 11:56:15,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:15" (1/1) ... [2022-09-16 11:56:15,238 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 184 [2022-09-16 11:56:15,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:56:15,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:56:15,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:56:15,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:56:15,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:15" (1/1) ... [2022-09-16 11:56:15,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:15" (1/1) ... [2022-09-16 11:56:15,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:15" (1/1) ... [2022-09-16 11:56:15,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:15" (1/1) ... [2022-09-16 11:56:15,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:15" (1/1) ... [2022-09-16 11:56:15,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:15" (1/1) ... [2022-09-16 11:56:15,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:15" (1/1) ... [2022-09-16 11:56:15,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:56:15,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:56:15,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:56:15,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:56:15,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:15" (1/1) ... [2022-09-16 11:56:15,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:56:15,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:15,311 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 11:56:15,320 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 11:56:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:56:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:56:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:56:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:56:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:56:15,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:56:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:56:15,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:56:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:56:15,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:56:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:56:15,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:56:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:56:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-09-16 11:56:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-09-16 11:56:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:56:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:56:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:56:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:56:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:56:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:56:15,359 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 11:56:15,476 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:56:15,477 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:56:15,879 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:56:15,982 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:56:15,983 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-16 11:56:15,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:56:15 BoogieIcfgContainer [2022-09-16 11:56:15,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:56:15,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:56:15,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:56:15,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:56:15,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:56:14" (1/3) ... [2022-09-16 11:56:15,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261be2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:56:15, skipping insertion in model container [2022-09-16 11:56:15,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:15" (2/3) ... [2022-09-16 11:56:15,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261be2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:56:15, skipping insertion in model container [2022-09-16 11:56:15,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:56:15" (3/3) ... [2022-09-16 11:56:15,993 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2022-09-16 11:56:16,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:56:16,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-09-16 11:56:16,013 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:56:16,121 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-09-16 11:56:16,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 220 transitions, 480 flow [2022-09-16 11:56:16,247 INFO L130 PetriNetUnfolder]: 14/215 cut-off events. [2022-09-16 11:56:16,247 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-09-16 11:56:16,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 215 events. 14/215 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 238 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 177. Up to 2 conditions per place. [2022-09-16 11:56:16,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 220 transitions, 480 flow [2022-09-16 11:56:16,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 190 transitions, 407 flow [2022-09-16 11:56:16,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:56:16,278 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;@3de30562, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:56:16,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-09-16 11:56:16,304 INFO L130 PetriNetUnfolder]: 4/72 cut-off events. [2022-09-16 11:56:16,304 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:56:16,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:16,305 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] [2022-09-16 11:56:16,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:56:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:16,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2134018356, now seen corresponding path program 1 times [2022-09-16 11:56:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:16,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166897772] [2022-09-16 11:56:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:16,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:16,621 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 11:56:16,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:16,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166897772] [2022-09-16 11:56:16,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166897772] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:16,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:56:16,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:56:16,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515483665] [2022-09-16 11:56:16,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:16,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:56:16,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:16,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:56:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:56:16,669 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 220 [2022-09-16 11:56:16,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 190 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 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 11:56:16,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:16,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 220 [2022-09-16 11:56:16,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:18,307 INFO L130 PetriNetUnfolder]: 3425/7651 cut-off events. [2022-09-16 11:56:18,307 INFO L131 PetriNetUnfolder]: For 1034/1034 co-relation queries the response was YES. [2022-09-16 11:56:18,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12744 conditions, 7651 events. 3425/7651 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 65422 event pairs, 2272 based on Foata normal form. 1256/6236 useless extension candidates. Maximal degree in co-relation 6021. Up to 2172 conditions per place. [2022-09-16 11:56:18,441 INFO L137 encePairwiseOnDemand]: 203/220 looper letters, 54 selfloop transitions, 4 changer transitions 3/206 dead transitions. [2022-09-16 11:56:18,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 206 transitions, 582 flow [2022-09-16 11:56:18,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:56:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:56:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 954 transitions. [2022-09-16 11:56:18,464 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8672727272727273 [2022-09-16 11:56:18,465 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 954 transitions. [2022-09-16 11:56:18,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 954 transitions. [2022-09-16 11:56:18,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:18,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 954 transitions. [2022-09-16 11:56:18,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:18,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:18,492 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:18,494 INFO L175 Difference]: Start difference. First operand has 193 places, 190 transitions, 407 flow. Second operand 5 states and 954 transitions. [2022-09-16 11:56:18,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 206 transitions, 582 flow [2022-09-16 11:56:18,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 206 transitions, 548 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 11:56:18,509 INFO L231 Difference]: Finished difference. Result has 188 places, 179 transitions, 392 flow [2022-09-16 11:56:18,511 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=188, PETRI_TRANSITIONS=179} [2022-09-16 11:56:18,515 INFO L287 CegarLoopForPetriNet]: 193 programPoint places, -5 predicate places. [2022-09-16 11:56:18,516 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 179 transitions, 392 flow [2022-09-16 11:56:18,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 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 11:56:18,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:18,517 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:56:18,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:56:18,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:56:18,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:18,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1652211588, now seen corresponding path program 1 times [2022-09-16 11:56:18,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:18,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256375978] [2022-09-16 11:56:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:18,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:18,657 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 11:56:18,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:18,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256375978] [2022-09-16 11:56:18,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256375978] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:18,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131483844] [2022-09-16 11:56:18,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:18,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:18,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:18,661 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 11:56:18,668 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 11:56:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:18,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:56:18,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:18,833 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 11:56:18,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:56:18,910 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 11:56:18,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131483844] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:56:18,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:56:18,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:56:18,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485431305] [2022-09-16 11:56:18,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:56:18,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:56:18,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:18,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:56:18,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:56:18,919 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 220 [2022-09-16 11:56:18,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 179 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 177.66666666666666) internal successors, (2132), 12 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:18,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:18,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 220 [2022-09-16 11:56:18,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:22,042 INFO L130 PetriNetUnfolder]: 8561/19038 cut-off events. [2022-09-16 11:56:22,043 INFO L131 PetriNetUnfolder]: For 671/671 co-relation queries the response was YES. [2022-09-16 11:56:22,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30918 conditions, 19038 events. 8561/19038 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 178957 event pairs, 5680 based on Foata normal form. 3/12391 useless extension candidates. Maximal degree in co-relation 24684. Up to 2167 conditions per place. [2022-09-16 11:56:22,379 INFO L137 encePairwiseOnDemand]: 213/220 looper letters, 123 selfloop transitions, 18 changer transitions 0/286 dead transitions. [2022-09-16 11:56:22,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 286 transitions, 950 flow [2022-09-16 11:56:22,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:56:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:56:22,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3294 transitions. [2022-09-16 11:56:22,386 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8318181818181818 [2022-09-16 11:56:22,386 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3294 transitions. [2022-09-16 11:56:22,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3294 transitions. [2022-09-16 11:56:22,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:22,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3294 transitions. [2022-09-16 11:56:22,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:22,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:22,405 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:22,405 INFO L175 Difference]: Start difference. First operand has 188 places, 179 transitions, 392 flow. Second operand 18 states and 3294 transitions. [2022-09-16 11:56:22,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 286 transitions, 950 flow [2022-09-16 11:56:22,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 286 transitions, 948 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:56:22,414 INFO L231 Difference]: Finished difference. Result has 205 places, 191 transitions, 496 flow [2022-09-16 11:56:22,414 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=496, PETRI_PLACES=205, PETRI_TRANSITIONS=191} [2022-09-16 11:56:22,415 INFO L287 CegarLoopForPetriNet]: 193 programPoint places, 12 predicate places. [2022-09-16 11:56:22,416 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 191 transitions, 496 flow [2022-09-16 11:56:22,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 177.66666666666666) internal successors, (2132), 12 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:22,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:22,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:56:22,446 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 11:56:22,643 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 11:56:22,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:56:22,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:22,645 INFO L85 PathProgramCache]: Analyzing trace with hash -321047837, now seen corresponding path program 1 times [2022-09-16 11:56:22,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:22,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948387324] [2022-09-16 11:56:22,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:22,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:22,733 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 11:56:22,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:22,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948387324] [2022-09-16 11:56:22,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948387324] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:22,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612292954] [2022-09-16 11:56:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:22,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:22,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:22,736 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 11:56:22,737 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 11:56:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:22,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:56:22,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:22,870 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 11:56:22,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:56:22,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612292954] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:22,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:56:22,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:56:22,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102661259] [2022-09-16 11:56:22,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:22,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:56:22,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:22,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:56:22,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:56:22,873 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 220 [2022-09-16 11:56:22,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 191 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:22,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:22,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 220 [2022-09-16 11:56:22,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:25,386 INFO L130 PetriNetUnfolder]: 8561/19034 cut-off events. [2022-09-16 11:56:25,386 INFO L131 PetriNetUnfolder]: For 707/707 co-relation queries the response was YES. [2022-09-16 11:56:25,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30936 conditions, 19034 events. 8561/19034 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 179179 event pairs, 5680 based on Foata normal form. 4/12376 useless extension candidates. Maximal degree in co-relation 24734. Up to 8652 conditions per place. [2022-09-16 11:56:25,626 INFO L137 encePairwiseOnDemand]: 215/220 looper letters, 55 selfloop transitions, 11 changer transitions 0/211 dead transitions. [2022-09-16 11:56:25,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 211 transitions, 661 flow [2022-09-16 11:56:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:56:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:56:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1283 transitions. [2022-09-16 11:56:25,630 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8331168831168831 [2022-09-16 11:56:25,630 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1283 transitions. [2022-09-16 11:56:25,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1283 transitions. [2022-09-16 11:56:25,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:25,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1283 transitions. [2022-09-16 11:56:25,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.28571428571428) internal successors, (1283), 7 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:25,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 220.0) internal successors, (1760), 8 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:25,637 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 220.0) internal successors, (1760), 8 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:25,637 INFO L175 Difference]: Start difference. First operand has 205 places, 191 transitions, 496 flow. Second operand 7 states and 1283 transitions. [2022-09-16 11:56:25,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 211 transitions, 661 flow [2022-09-16 11:56:25,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 211 transitions, 629 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:56:25,647 INFO L231 Difference]: Finished difference. Result has 201 places, 187 transitions, 459 flow [2022-09-16 11:56:25,647 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=459, PETRI_PLACES=201, PETRI_TRANSITIONS=187} [2022-09-16 11:56:25,649 INFO L287 CegarLoopForPetriNet]: 193 programPoint places, 8 predicate places. [2022-09-16 11:56:25,649 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 187 transitions, 459 flow [2022-09-16 11:56:25,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:25,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:25,650 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 11:56:25,677 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 11:56:25,863 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 11:56:25,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:56:25,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash 989448040, now seen corresponding path program 1 times [2022-09-16 11:56:25,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:25,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201846852] [2022-09-16 11:56:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:25,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:25,951 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 11:56:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:25,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201846852] [2022-09-16 11:56:25,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201846852] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:25,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:56:25,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:56:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575232323] [2022-09-16 11:56:25,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:25,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:56:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:25,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:56:25,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:56:25,955 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 220 [2022-09-16 11:56:25,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 187 transitions, 459 flow. Second operand has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:25,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:25,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 220 [2022-09-16 11:56:25,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:37,159 INFO L130 PetriNetUnfolder]: 49856/93909 cut-off events. [2022-09-16 11:56:37,159 INFO L131 PetriNetUnfolder]: For 1342/1447 co-relation queries the response was YES. [2022-09-16 11:56:37,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163428 conditions, 93909 events. 49856/93909 cut-off events. For 1342/1447 co-relation queries the response was YES. Maximal size of possible extension queue 2002. Compared 963960 event pairs, 26915 based on Foata normal form. 5/59554 useless extension candidates. Maximal degree in co-relation 130734. Up to 37096 conditions per place. [2022-09-16 11:56:38,405 INFO L137 encePairwiseOnDemand]: 214/220 looper letters, 73 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2022-09-16 11:56:38,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 235 transitions, 728 flow [2022-09-16 11:56:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:56:38,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:56:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 964 transitions. [2022-09-16 11:56:38,410 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8763636363636363 [2022-09-16 11:56:38,410 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 964 transitions. [2022-09-16 11:56:38,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 964 transitions. [2022-09-16 11:56:38,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:38,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 964 transitions. [2022-09-16 11:56:38,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.8) internal successors, (964), 5 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:38,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:38,415 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:38,415 INFO L175 Difference]: Start difference. First operand has 201 places, 187 transitions, 459 flow. Second operand 5 states and 964 transitions. [2022-09-16 11:56:38,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 235 transitions, 728 flow [2022-09-16 11:56:38,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 235 transitions, 714 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:56:38,420 INFO L231 Difference]: Finished difference. Result has 203 places, 190 transitions, 475 flow [2022-09-16 11:56:38,420 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=475, PETRI_PLACES=203, PETRI_TRANSITIONS=190} [2022-09-16 11:56:38,420 INFO L287 CegarLoopForPetriNet]: 193 programPoint places, 10 predicate places. [2022-09-16 11:56:38,421 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 190 transitions, 475 flow [2022-09-16 11:56:38,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:38,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:38,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:56:38,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:56:38,422 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:56:38,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:38,422 INFO L85 PathProgramCache]: Analyzing trace with hash 277436669, now seen corresponding path program 1 times [2022-09-16 11:56:38,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:38,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974015068] [2022-09-16 11:56:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:38,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:38,462 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 11:56:38,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:38,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974015068] [2022-09-16 11:56:38,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974015068] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:38,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:56:38,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:56:38,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182770380] [2022-09-16 11:56:38,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:38,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:56:38,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:56:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:56:38,465 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 220 [2022-09-16 11:56:38,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 190 transitions, 475 flow. Second operand has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:38,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:38,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 220 [2022-09-16 11:56:38,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:57,719 INFO L130 PetriNetUnfolder]: 73946/135899 cut-off events. [2022-09-16 11:56:57,719 INFO L131 PetriNetUnfolder]: For 6392/6392 co-relation queries the response was YES. [2022-09-16 11:56:58,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241189 conditions, 135899 events. 73946/135899 cut-off events. For 6392/6392 co-relation queries the response was YES. Maximal size of possible extension queue 3836. Compared 1483961 event pairs, 42970 based on Foata normal form. 0/93959 useless extension candidates. Maximal degree in co-relation 192941. Up to 59581 conditions per place. [2022-09-16 11:56:59,730 INFO L137 encePairwiseOnDemand]: 214/220 looper letters, 72 selfloop transitions, 4 changer transitions 0/237 dead transitions. [2022-09-16 11:56:59,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 237 transitions, 739 flow [2022-09-16 11:56:59,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:56:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:56:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 963 transitions. [2022-09-16 11:56:59,734 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8754545454545455 [2022-09-16 11:56:59,734 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 963 transitions. [2022-09-16 11:56:59,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 963 transitions. [2022-09-16 11:56:59,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:59,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 963 transitions. [2022-09-16 11:56:59,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.6) internal successors, (963), 5 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:59,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:59,739 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:59,739 INFO L175 Difference]: Start difference. First operand has 203 places, 190 transitions, 475 flow. Second operand 5 states and 963 transitions. [2022-09-16 11:56:59,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 237 transitions, 739 flow [2022-09-16 11:56:59,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 237 transitions, 737 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:56:59,748 INFO L231 Difference]: Finished difference. Result has 209 places, 193 transitions, 503 flow [2022-09-16 11:56:59,749 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=503, PETRI_PLACES=209, PETRI_TRANSITIONS=193} [2022-09-16 11:56:59,749 INFO L287 CegarLoopForPetriNet]: 193 programPoint places, 16 predicate places. [2022-09-16 11:56:59,750 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 193 transitions, 503 flow [2022-09-16 11:56:59,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:59,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:59,750 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 11:56:59,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:56:59,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-09-16 11:56:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:59,751 INFO L85 PathProgramCache]: Analyzing trace with hash 458096204, now seen corresponding path program 1 times [2022-09-16 11:56:59,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:59,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484558857] [2022-09-16 11:56:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:59,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:59,803 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 11:56:59,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:59,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484558857] [2022-09-16 11:56:59,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484558857] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:59,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641822626] [2022-09-16 11:56:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:59,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:59,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:59,806 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 11:56:59,808 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 11:56:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:59,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:56:59,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:00,001 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 11:57:00,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:57:00,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641822626] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:00,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:57:00,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:57:00,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338971297] [2022-09-16 11:57:00,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:00,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:57:00,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:00,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:57:00,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:57:00,007 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 220 [2022-09-16 11:57:00,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 193 transitions, 503 flow. Second operand has 7 states, 7 states have (on average 163.71428571428572) internal successors, (1146), 7 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:00,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:00,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 220 [2022-09-16 11:57:00,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand