/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-array.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:58:48,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:58:48,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:58:48,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:58:48,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:58:48,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:58:48,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:58:48,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:58:48,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:58:48,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:58:48,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:58:48,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:58:48,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:58:48,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:58:48,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:58:48,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:58:48,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:58:48,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:58:48,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:58:48,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:58:48,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:58:48,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:58:48,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:58:48,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:58:48,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:58:48,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:58:48,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:58:48,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:58:48,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:58:48,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:58:48,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:58:48,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:58:48,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:58:48,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:58:48,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:58:48,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:58:48,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:58:48,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:58:48,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:58:48,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:58:48,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:58:48,901 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 11:58:48,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:58:48,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:58:48,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:58:48,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:58:48,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:58:48,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:58:48,922 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:58:48,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:58:48,922 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:58:48,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:58:48,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:58:48,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:58:48,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:58:48,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:58:48,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:58:48,923 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:58:48,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:58:48,923 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:58:48,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:58:48,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:58:48,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:58:48,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:58:48,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:58:48,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:58:48,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:58:48,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:58:48,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:58:48,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:58:48,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:58:48,925 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:58:48,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:58:48,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:58:49,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:58:49,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:58:49,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:58:49,098 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:58:49,099 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:58:49,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2022-09-16 11:58:49,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6806bf343/0545ce8f36de42859ff6058f6a660107/FLAG3cd54b572 [2022-09-16 11:58:49,451 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:58:49,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2022-09-16 11:58:49,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6806bf343/0545ce8f36de42859ff6058f6a660107/FLAG3cd54b572 [2022-09-16 11:58:49,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6806bf343/0545ce8f36de42859ff6058f6a660107 [2022-09-16 11:58:49,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:58:49,889 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:58:49,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:58:49,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:58:49,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:58:49,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:58:49" (1/1) ... [2022-09-16 11:58:49,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@abacdf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:49, skipping insertion in model container [2022-09-16 11:58:49,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:58:49" (1/1) ... [2022-09-16 11:58:49,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:58:49,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:58:50,090 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-array.wvr.c[2553,2566] [2022-09-16 11:58:50,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:58:50,106 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:58:50,137 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-array.wvr.c[2553,2566] [2022-09-16 11:58:50,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:58:50,157 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:58:50,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:50 WrapperNode [2022-09-16 11:58:50,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:58:50,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:58:50,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:58:50,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:58:50,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:50" (1/1) ... [2022-09-16 11:58:50,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:50" (1/1) ... [2022-09-16 11:58:50,186 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-09-16 11:58:50,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:58:50,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:58:50,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:58:50,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:58:50,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:50" (1/1) ... [2022-09-16 11:58:50,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:50" (1/1) ... [2022-09-16 11:58:50,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:50" (1/1) ... [2022-09-16 11:58:50,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:50" (1/1) ... [2022-09-16 11:58:50,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:50" (1/1) ... [2022-09-16 11:58:50,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:50" (1/1) ... [2022-09-16 11:58:50,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:50" (1/1) ... [2022-09-16 11:58:50,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:58:50,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:58:50,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:58:50,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:58:50,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:50" (1/1) ... [2022-09-16 11:58:50,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:58:50,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:50,230 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 11:58:50,232 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 11:58:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:58:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:58:50,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:58:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:58:50,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:58:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:58:50,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:58:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:58:50,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:58:50,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:58:50,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:58:50,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:58:50,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:58:50,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:58:50,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:58:50,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:58:50,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:58:50,258 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 11:58:50,343 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:58:50,345 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:58:50,601 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:58:50,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:58:50,644 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:58:50,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:58:50 BoogieIcfgContainer [2022-09-16 11:58:50,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:58:50,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:58:50,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:58:50,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:58:50,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:58:49" (1/3) ... [2022-09-16 11:58:50,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df9dd3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:58:50, skipping insertion in model container [2022-09-16 11:58:50,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:50" (2/3) ... [2022-09-16 11:58:50,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df9dd3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:58:50, skipping insertion in model container [2022-09-16 11:58:50,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:58:50" (3/3) ... [2022-09-16 11:58:50,654 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2022-09-16 11:58:50,664 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:58:50,665 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 11:58:50,665 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:58:50,715 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:58:50,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 168 transitions, 360 flow [2022-09-16 11:58:50,803 INFO L130 PetriNetUnfolder]: 12/165 cut-off events. [2022-09-16 11:58:50,804 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:58:50,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 165 events. 12/165 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 133 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-09-16 11:58:50,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 168 transitions, 360 flow [2022-09-16 11:58:50,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 144 transitions, 303 flow [2022-09-16 11:58:50,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:58:50,835 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;@2ab25145, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:58:50,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-09-16 11:58:50,853 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-09-16 11:58:50,853 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:58:50,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:50,854 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] [2022-09-16 11:58:50,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:50,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash 47761478, now seen corresponding path program 1 times [2022-09-16 11:58:50,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:50,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315732551] [2022-09-16 11:58:50,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:50,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:51,024 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 11:58:51,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:51,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315732551] [2022-09-16 11:58:51,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315732551] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:51,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:51,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:58:51,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422092807] [2022-09-16 11:58:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:51,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:58:51,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:51,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:58:51,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:58:51,067 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 168 [2022-09-16 11:58:51,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 144 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:51,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:51,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 168 [2022-09-16 11:58:51,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:51,287 INFO L130 PetriNetUnfolder]: 79/583 cut-off events. [2022-09-16 11:58:51,288 INFO L131 PetriNetUnfolder]: For 86/88 co-relation queries the response was YES. [2022-09-16 11:58:51,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 583 events. 79/583 cut-off events. For 86/88 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2929 event pairs, 30 based on Foata normal form. 72/535 useless extension candidates. Maximal degree in co-relation 285. Up to 69 conditions per place. [2022-09-16 11:58:51,300 INFO L137 encePairwiseOnDemand]: 155/168 looper letters, 32 selfloop transitions, 4 changer transitions 3/153 dead transitions. [2022-09-16 11:58:51,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 153 transitions, 408 flow [2022-09-16 11:58:51,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:58:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:58:51,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2022-09-16 11:58:51,322 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2022-09-16 11:58:51,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2022-09-16 11:58:51,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2022-09-16 11:58:51,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:51,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2022-09-16 11:58:51,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:51,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:51,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:51,345 INFO L175 Difference]: Start difference. First operand has 143 places, 144 transitions, 303 flow. Second operand 5 states and 740 transitions. [2022-09-16 11:58:51,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 153 transitions, 408 flow [2022-09-16 11:58:51,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 153 transitions, 390 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:51,357 INFO L231 Difference]: Finished difference. Result has 145 places, 137 transitions, 304 flow [2022-09-16 11:58:51,359 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=145, PETRI_TRANSITIONS=137} [2022-09-16 11:58:51,362 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 2 predicate places. [2022-09-16 11:58:51,362 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 137 transitions, 304 flow [2022-09-16 11:58:51,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:51,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:51,364 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] [2022-09-16 11:58:51,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:58:51,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:51,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1591896996, now seen corresponding path program 1 times [2022-09-16 11:58:51,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:51,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211405606] [2022-09-16 11:58:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:51,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:51,462 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 11:58:51,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:51,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211405606] [2022-09-16 11:58:51,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211405606] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:51,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446017211] [2022-09-16 11:58:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:51,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:51,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:51,465 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 11:58:51,477 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 11:58:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:51,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:51,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:51,632 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 11:58:51,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:51,685 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 11:58:51,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446017211] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:51,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:51,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:58:51,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124095476] [2022-09-16 11:58:51,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:51,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:58:51,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:51,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:58:51,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:58:51,696 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 168 [2022-09-16 11:58:51,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 137 transitions, 304 flow. Second operand has 12 states, 12 states have (on average 140.66666666666666) internal successors, (1688), 12 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:51,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:51,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 168 [2022-09-16 11:58:51,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:52,015 INFO L130 PetriNetUnfolder]: 196/1376 cut-off events. [2022-09-16 11:58:52,015 INFO L131 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2022-09-16 11:58:52,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 1376 events. 196/1376 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 9158 event pairs, 75 based on Foata normal form. 3/1094 useless extension candidates. Maximal degree in co-relation 1384. Up to 70 conditions per place. [2022-09-16 11:58:52,032 INFO L137 encePairwiseOnDemand]: 161/168 looper letters, 68 selfloop transitions, 18 changer transitions 0/200 dead transitions. [2022-09-16 11:58:52,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 200 transitions, 648 flow [2022-09-16 11:58:52,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:58:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:58:52,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2573 transitions. [2022-09-16 11:58:52,037 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8508597883597884 [2022-09-16 11:58:52,037 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2573 transitions. [2022-09-16 11:58:52,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2573 transitions. [2022-09-16 11:58:52,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:52,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2573 transitions. [2022-09-16 11:58:52,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 142.94444444444446) internal successors, (2573), 18 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:52,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:52,073 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:52,073 INFO L175 Difference]: Start difference. First operand has 145 places, 137 transitions, 304 flow. Second operand 18 states and 2573 transitions. [2022-09-16 11:58:52,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 200 transitions, 648 flow [2022-09-16 11:58:52,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 200 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:58:52,079 INFO L231 Difference]: Finished difference. Result has 162 places, 149 transitions, 408 flow [2022-09-16 11:58:52,080 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=408, PETRI_PLACES=162, PETRI_TRANSITIONS=149} [2022-09-16 11:58:52,080 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 19 predicate places. [2022-09-16 11:58:52,080 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 149 transitions, 408 flow [2022-09-16 11:58:52,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 140.66666666666666) internal successors, (1688), 12 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:52,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:52,082 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] [2022-09-16 11:58:52,118 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 11:58:52,289 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 11:58:52,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:52,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2104166939, now seen corresponding path program 1 times [2022-09-16 11:58:52,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:52,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706546367] [2022-09-16 11:58:52,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:52,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:52,371 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 11:58:52,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:52,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706546367] [2022-09-16 11:58:52,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706546367] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:52,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170486825] [2022-09-16 11:58:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:52,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:52,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:52,374 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 11:58:52,399 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 11:58:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:52,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:52,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:52,489 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 11:58:52,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:58:52,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170486825] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:52,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:58:52,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:58:52,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020486890] [2022-09-16 11:58:52,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:52,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:58:52,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:52,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:58:52,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:58:52,496 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 168 [2022-09-16 11:58:52,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 149 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 140.33333333333334) internal successors, (842), 6 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:52,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:52,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 168 [2022-09-16 11:58:52,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:52,690 INFO L130 PetriNetUnfolder]: 196/1372 cut-off events. [2022-09-16 11:58:52,690 INFO L131 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2022-09-16 11:58:52,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1372 events. 196/1372 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9066 event pairs, 75 based on Foata normal form. 4/1091 useless extension candidates. Maximal degree in co-relation 1427. Up to 240 conditions per place. [2022-09-16 11:58:52,702 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 33 selfloop transitions, 11 changer transitions 0/158 dead transitions. [2022-09-16 11:58:52,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 158 transitions, 503 flow [2022-09-16 11:58:52,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:58:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:58:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1002 transitions. [2022-09-16 11:58:52,705 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8520408163265306 [2022-09-16 11:58:52,705 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1002 transitions. [2022-09-16 11:58:52,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1002 transitions. [2022-09-16 11:58:52,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:52,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1002 transitions. [2022-09-16 11:58:52,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.14285714285714) internal successors, (1002), 7 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:52,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:52,709 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:52,709 INFO L175 Difference]: Start difference. First operand has 162 places, 149 transitions, 408 flow. Second operand 7 states and 1002 transitions. [2022-09-16 11:58:52,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 158 transitions, 503 flow [2022-09-16 11:58:52,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 158 transitions, 471 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:52,719 INFO L231 Difference]: Finished difference. Result has 158 places, 145 transitions, 371 flow [2022-09-16 11:58:52,720 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=158, PETRI_TRANSITIONS=145} [2022-09-16 11:58:52,721 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 15 predicate places. [2022-09-16 11:58:52,721 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 145 transitions, 371 flow [2022-09-16 11:58:52,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.33333333333334) internal successors, (842), 6 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:52,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:52,722 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] [2022-09-16 11:58:52,744 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 11:58:52,923 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 11:58:52,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:52,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:52,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2119274129, now seen corresponding path program 1 times [2022-09-16 11:58:52,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:52,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914713422] [2022-09-16 11:58:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:52,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:52,987 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 11:58:52,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:52,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914713422] [2022-09-16 11:58:52,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914713422] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:52,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:52,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:58:52,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948318342] [2022-09-16 11:58:52,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:52,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:58:52,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:52,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:58:52,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:58:52,989 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-09-16 11:58:52,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 145 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:52,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:52,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-09-16 11:58:52,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:53,358 INFO L130 PetriNetUnfolder]: 1121/3662 cut-off events. [2022-09-16 11:58:53,359 INFO L131 PetriNetUnfolder]: For 102/132 co-relation queries the response was YES. [2022-09-16 11:58:53,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 3662 events. 1121/3662 cut-off events. For 102/132 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 30808 event pairs, 450 based on Foata normal form. 0/2877 useless extension candidates. Maximal degree in co-relation 4799. Up to 1066 conditions per place. [2022-09-16 11:58:53,381 INFO L137 encePairwiseOnDemand]: 162/168 looper letters, 36 selfloop transitions, 4 changer transitions 0/167 dead transitions. [2022-09-16 11:58:53,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 167 transitions, 506 flow [2022-09-16 11:58:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:58:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:58:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2022-09-16 11:58:53,383 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-09-16 11:58:53,383 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2022-09-16 11:58:53,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2022-09-16 11:58:53,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:53,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2022-09-16 11:58:53,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:53,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:53,386 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:53,386 INFO L175 Difference]: Start difference. First operand has 158 places, 145 transitions, 371 flow. Second operand 5 states and 742 transitions. [2022-09-16 11:58:53,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 167 transitions, 506 flow [2022-09-16 11:58:53,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 167 transitions, 492 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:53,391 INFO L231 Difference]: Finished difference. Result has 160 places, 148 transitions, 387 flow [2022-09-16 11:58:53,391 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=160, PETRI_TRANSITIONS=148} [2022-09-16 11:58:53,392 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 17 predicate places. [2022-09-16 11:58:53,392 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 148 transitions, 387 flow [2022-09-16 11:58:53,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:53,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:53,393 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] [2022-09-16 11:58:53,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:58:53,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:53,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:53,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1191670954, now seen corresponding path program 1 times [2022-09-16 11:58:53,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:53,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156400834] [2022-09-16 11:58:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:53,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:53,464 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 11:58:53,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:53,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156400834] [2022-09-16 11:58:53,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156400834] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:53,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:53,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:58:53,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273803253] [2022-09-16 11:58:53,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:53,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:58:53,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:53,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:58:53,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:58:53,466 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-09-16 11:58:53,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 148 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:53,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:53,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-09-16 11:58:53,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:54,056 INFO L130 PetriNetUnfolder]: 2156/5657 cut-off events. [2022-09-16 11:58:54,057 INFO L131 PetriNetUnfolder]: For 482/487 co-relation queries the response was YES. [2022-09-16 11:58:54,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9907 conditions, 5657 events. 2156/5657 cut-off events. For 482/487 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 52082 event pairs, 965 based on Foata normal form. 0/4772 useless extension candidates. Maximal degree in co-relation 7914. Up to 2031 conditions per place. [2022-09-16 11:58:54,095 INFO L137 encePairwiseOnDemand]: 162/168 looper letters, 35 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2022-09-16 11:58:54,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 169 transitions, 517 flow [2022-09-16 11:58:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:58:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:58:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2022-09-16 11:58:54,097 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8821428571428571 [2022-09-16 11:58:54,097 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2022-09-16 11:58:54,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2022-09-16 11:58:54,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:54,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2022-09-16 11:58:54,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:54,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:54,100 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:54,100 INFO L175 Difference]: Start difference. First operand has 160 places, 148 transitions, 387 flow. Second operand 5 states and 741 transitions. [2022-09-16 11:58:54,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 169 transitions, 517 flow [2022-09-16 11:58:54,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 169 transitions, 515 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:58:54,103 INFO L231 Difference]: Finished difference. Result has 166 places, 151 transitions, 415 flow [2022-09-16 11:58:54,103 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=166, PETRI_TRANSITIONS=151} [2022-09-16 11:58:54,104 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 23 predicate places. [2022-09-16 11:58:54,104 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 151 transitions, 415 flow [2022-09-16 11:58:54,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:54,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:54,105 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] [2022-09-16 11:58:54,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:58:54,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:54,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:54,105 INFO L85 PathProgramCache]: Analyzing trace with hash -840761546, now seen corresponding path program 1 times [2022-09-16 11:58:54,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:54,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714710677] [2022-09-16 11:58:54,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:54,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:54,162 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 11:58:54,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:54,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714710677] [2022-09-16 11:58:54,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714710677] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:54,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737029265] [2022-09-16 11:58:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:54,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:54,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:54,167 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 11:58:54,168 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 11:58:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:54,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:58:54,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:54,304 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 11:58:54,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:58:54,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737029265] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:54,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:58:54,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:58:54,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527035873] [2022-09-16 11:58:54,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:54,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:58:54,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:54,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:58:54,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:58:54,306 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 168 [2022-09-16 11:58:54,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 151 transitions, 415 flow. Second operand has 7 states, 7 states have (on average 130.57142857142858) internal successors, (914), 7 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:54,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:54,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 168 [2022-09-16 11:58:54,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:55,082 INFO L130 PetriNetUnfolder]: 1933/7428 cut-off events. [2022-09-16 11:58:55,082 INFO L131 PetriNetUnfolder]: For 1028/1028 co-relation queries the response was YES. [2022-09-16 11:58:55,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12945 conditions, 7428 events. 1933/7428 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 76139 event pairs, 1236 based on Foata normal form. 0/6126 useless extension candidates. Maximal degree in co-relation 12248. Up to 2609 conditions per place. [2022-09-16 11:58:55,137 INFO L137 encePairwiseOnDemand]: 159/168 looper letters, 53 selfloop transitions, 8 changer transitions 0/172 dead transitions. [2022-09-16 11:58:55,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 172 transitions, 590 flow [2022-09-16 11:58:55,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:58:55,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:58:55,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1078 transitions. [2022-09-16 11:58:55,139 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8020833333333334 [2022-09-16 11:58:55,140 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1078 transitions. [2022-09-16 11:58:55,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1078 transitions. [2022-09-16 11:58:55,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:55,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1078 transitions. [2022-09-16 11:58:55,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.75) internal successors, (1078), 8 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:55,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 168.0) internal successors, (1512), 9 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:55,144 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 168.0) internal successors, (1512), 9 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:55,144 INFO L175 Difference]: Start difference. First operand has 166 places, 151 transitions, 415 flow. Second operand 8 states and 1078 transitions. [2022-09-16 11:58:55,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 172 transitions, 590 flow [2022-09-16 11:58:55,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 172 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:58:55,162 INFO L231 Difference]: Finished difference. Result has 175 places, 153 transitions, 447 flow [2022-09-16 11:58:55,163 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=447, PETRI_PLACES=175, PETRI_TRANSITIONS=153} [2022-09-16 11:58:55,163 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 32 predicate places. [2022-09-16 11:58:55,164 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 153 transitions, 447 flow [2022-09-16 11:58:55,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.57142857142858) internal successors, (914), 7 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:55,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:55,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:55,186 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 11:58:55,379 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 11:58:55,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:55,380 INFO L85 PathProgramCache]: Analyzing trace with hash -797744630, now seen corresponding path program 1 times [2022-09-16 11:58:55,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:55,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260219319] [2022-09-16 11:58:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:55,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:55,432 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 11:58:55,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:55,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260219319] [2022-09-16 11:58:55,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260219319] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:55,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:55,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:58:55,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098925342] [2022-09-16 11:58:55,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:55,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:58:55,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:55,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:58:55,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:58:55,434 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 168 [2022-09-16 11:58:55,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 153 transitions, 447 flow. Second operand has 8 states, 8 states have (on average 125.375) internal successors, (1003), 8 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:55,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:55,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 168 [2022-09-16 11:58:55,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:56,177 INFO L130 PetriNetUnfolder]: 2394/5549 cut-off events. [2022-09-16 11:58:56,178 INFO L131 PetriNetUnfolder]: For 971/1004 co-relation queries the response was YES. [2022-09-16 11:58:56,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10742 conditions, 5549 events. 2394/5549 cut-off events. For 971/1004 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 48758 event pairs, 1914 based on Foata normal form. 33/4660 useless extension candidates. Maximal degree in co-relation 9905. Up to 3377 conditions per place. [2022-09-16 11:58:56,215 INFO L137 encePairwiseOnDemand]: 155/168 looper letters, 70 selfloop transitions, 12 changer transitions 0/191 dead transitions. [2022-09-16 11:58:56,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 191 transitions, 703 flow [2022-09-16 11:58:56,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:58:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:58:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1430 transitions. [2022-09-16 11:58:56,218 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7738095238095238 [2022-09-16 11:58:56,218 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1430 transitions. [2022-09-16 11:58:56,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1430 transitions. [2022-09-16 11:58:56,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:56,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1430 transitions. [2022-09-16 11:58:56,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:56,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 168.0) internal successors, (2016), 12 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:56,223 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 168.0) internal successors, (2016), 12 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:56,223 INFO L175 Difference]: Start difference. First operand has 175 places, 153 transitions, 447 flow. Second operand 11 states and 1430 transitions. [2022-09-16 11:58:56,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 191 transitions, 703 flow [2022-09-16 11:58:56,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 191 transitions, 693 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:58:56,229 INFO L231 Difference]: Finished difference. Result has 186 places, 158 transitions, 496 flow [2022-09-16 11:58:56,229 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=496, PETRI_PLACES=186, PETRI_TRANSITIONS=158} [2022-09-16 11:58:56,230 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 43 predicate places. [2022-09-16 11:58:56,230 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 158 transitions, 496 flow [2022-09-16 11:58:56,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.375) internal successors, (1003), 8 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:56,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:56,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:56,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:58:56,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:56,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:56,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1039720754, now seen corresponding path program 1 times [2022-09-16 11:58:56,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:56,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829850897] [2022-09-16 11:58:56,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:56,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:56,266 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 11:58:56,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:56,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829850897] [2022-09-16 11:58:56,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829850897] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:56,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:56,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:58:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957878887] [2022-09-16 11:58:56,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:56,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:58:56,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:56,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:58:56,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:58:56,269 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 168 [2022-09-16 11:58:56,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 158 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:56,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:56,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 168 [2022-09-16 11:58:56,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:57,019 INFO L130 PetriNetUnfolder]: 2892/6713 cut-off events. [2022-09-16 11:58:57,019 INFO L131 PetriNetUnfolder]: For 1134/1138 co-relation queries the response was YES. [2022-09-16 11:58:57,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13357 conditions, 6713 events. 2892/6713 cut-off events. For 1134/1138 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 61128 event pairs, 487 based on Foata normal form. 172/5941 useless extension candidates. Maximal degree in co-relation 12697. Up to 2168 conditions per place. [2022-09-16 11:58:57,129 INFO L137 encePairwiseOnDemand]: 161/168 looper letters, 33 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2022-09-16 11:58:57,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 168 transitions, 597 flow [2022-09-16 11:58:57,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:58:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:58:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 830 transitions. [2022-09-16 11:58:57,131 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8234126984126984 [2022-09-16 11:58:57,131 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 830 transitions. [2022-09-16 11:58:57,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 830 transitions. [2022-09-16 11:58:57,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:57,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 830 transitions. [2022-09-16 11:58:57,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:57,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:57,135 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:57,135 INFO L175 Difference]: Start difference. First operand has 186 places, 158 transitions, 496 flow. Second operand 6 states and 830 transitions. [2022-09-16 11:58:57,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 168 transitions, 597 flow [2022-09-16 11:58:57,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 168 transitions, 581 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:58:57,151 INFO L231 Difference]: Finished difference. Result has 183 places, 156 transitions, 487 flow [2022-09-16 11:58:57,151 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=178, 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=6, PETRI_FLOW=487, PETRI_PLACES=183, PETRI_TRANSITIONS=156} [2022-09-16 11:58:57,151 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 40 predicate places. [2022-09-16 11:58:57,152 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 156 transitions, 487 flow [2022-09-16 11:58:57,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:57,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:57,152 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] [2022-09-16 11:58:57,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:58:57,152 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:57,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:57,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1810045335, now seen corresponding path program 1 times [2022-09-16 11:58:57,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:57,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556484785] [2022-09-16 11:58:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:57,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:57,187 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 11:58:57,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:57,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556484785] [2022-09-16 11:58:57,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556484785] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:57,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748990724] [2022-09-16 11:58:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:57,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:57,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:57,189 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 11:58:57,190 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 11:58:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:57,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:57,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:57,277 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 11:58:57,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:57,306 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 11:58:57,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748990724] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:57,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:57,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:58:57,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28244772] [2022-09-16 11:58:57,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:57,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:58:57,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:57,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:58:57,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:58:57,308 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-09-16 11:58:57,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 156 transitions, 487 flow. Second operand has 12 states, 12 states have (on average 142.75) internal successors, (1713), 12 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:57,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:57,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-09-16 11:58:57,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:58,450 INFO L130 PetriNetUnfolder]: 4141/9230 cut-off events. [2022-09-16 11:58:58,450 INFO L131 PetriNetUnfolder]: For 1398/1402 co-relation queries the response was YES. [2022-09-16 11:58:58,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19508 conditions, 9230 events. 4141/9230 cut-off events. For 1398/1402 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 87082 event pairs, 572 based on Foata normal form. 171/8739 useless extension candidates. Maximal degree in co-relation 17872. Up to 1598 conditions per place. [2022-09-16 11:58:58,515 INFO L137 encePairwiseOnDemand]: 161/168 looper letters, 102 selfloop transitions, 18 changer transitions 0/255 dead transitions. [2022-09-16 11:58:58,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 255 transitions, 999 flow [2022-09-16 11:58:58,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:58:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:58:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2643 transitions. [2022-09-16 11:58:58,520 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8740079365079365 [2022-09-16 11:58:58,520 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2643 transitions. [2022-09-16 11:58:58,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2643 transitions. [2022-09-16 11:58:58,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:58,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2643 transitions. [2022-09-16 11:58:58,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 146.83333333333334) internal successors, (2643), 18 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:58,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:58,528 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:58,528 INFO L175 Difference]: Start difference. First operand has 183 places, 156 transitions, 487 flow. Second operand 18 states and 2643 transitions. [2022-09-16 11:58:58,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 255 transitions, 999 flow [2022-09-16 11:58:58,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 255 transitions, 983 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:58,544 INFO L231 Difference]: Finished difference. Result has 199 places, 168 transitions, 577 flow [2022-09-16 11:58:58,545 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=577, PETRI_PLACES=199, PETRI_TRANSITIONS=168} [2022-09-16 11:58:58,545 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 56 predicate places. [2022-09-16 11:58:58,545 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 168 transitions, 577 flow [2022-09-16 11:58:58,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 142.75) internal successors, (1713), 12 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:58,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:58,546 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:58,569 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 11:58:58,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:58,756 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:58,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash -276830043, now seen corresponding path program 1 times [2022-09-16 11:58:58,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:58,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439402534] [2022-09-16 11:58:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:58,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:58,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:58,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439402534] [2022-09-16 11:58:58,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439402534] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:58,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123780785] [2022-09-16 11:58:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:58,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:58,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:58,788 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 11:58:58,789 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 11:58:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:58,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:58,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:58,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:58:58,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123780785] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:58,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:58:58,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:58:58,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209117151] [2022-09-16 11:58:58,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:58,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:58:58,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:58,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:58:58,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:58:58,872 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-09-16 11:58:58,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 168 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:58,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:58,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-09-16 11:58:58,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:59,854 INFO L130 PetriNetUnfolder]: 3672/8216 cut-off events. [2022-09-16 11:58:59,854 INFO L131 PetriNetUnfolder]: For 2827/2831 co-relation queries the response was YES. [2022-09-16 11:58:59,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18669 conditions, 8216 events. 3672/8216 cut-off events. For 2827/2831 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 77227 event pairs, 210 based on Foata normal form. 228/8004 useless extension candidates. Maximal degree in co-relation 17377. Up to 2432 conditions per place. [2022-09-16 11:58:59,930 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 44 selfloop transitions, 11 changer transitions 0/190 dead transitions. [2022-09-16 11:58:59,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 190 transitions, 730 flow [2022-09-16 11:58:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:58:59,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:58:59,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1027 transitions. [2022-09-16 11:58:59,932 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8732993197278912 [2022-09-16 11:58:59,933 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1027 transitions. [2022-09-16 11:58:59,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1027 transitions. [2022-09-16 11:58:59,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:59,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1027 transitions. [2022-09-16 11:58:59,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.71428571428572) internal successors, (1027), 7 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:59,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:59,937 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:59,937 INFO L175 Difference]: Start difference. First operand has 199 places, 168 transitions, 577 flow. Second operand 7 states and 1027 transitions. [2022-09-16 11:58:59,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 190 transitions, 730 flow [2022-09-16 11:58:59,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 190 transitions, 698 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:59,955 INFO L231 Difference]: Finished difference. Result has 195 places, 164 transitions, 540 flow [2022-09-16 11:58:59,955 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=195, PETRI_TRANSITIONS=164} [2022-09-16 11:58:59,956 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 52 predicate places. [2022-09-16 11:58:59,956 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 164 transitions, 540 flow [2022-09-16 11:58:59,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:59,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:59,956 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 11:58:59,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-16 11:59:00,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-09-16 11:59:00,174 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:59:00,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:00,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1610000404, now seen corresponding path program 1 times [2022-09-16 11:59:00,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:00,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733595460] [2022-09-16 11:59:00,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:00,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:00,216 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 11:59:00,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:00,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733595460] [2022-09-16 11:59:00,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733595460] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:00,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676927071] [2022-09-16 11:59:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:00,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:00,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:00,218 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 11:59:00,219 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 11:59:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:00,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:59:00,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:00,430 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 11:59:00,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:00,618 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 11:59:00,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676927071] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:00,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:00,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-09-16 11:59:00,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843547957] [2022-09-16 11:59:00,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:00,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:59:00,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:00,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:59:00,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:59:00,622 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 168 [2022-09-16 11:59:00,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 164 transitions, 540 flow. Second operand has 23 states, 23 states have (on average 121.65217391304348) internal successors, (2798), 23 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:00,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:00,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 168 [2022-09-16 11:59:00,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:02,806 INFO L130 PetriNetUnfolder]: 6818/14620 cut-off events. [2022-09-16 11:59:02,806 INFO L131 PetriNetUnfolder]: For 3867/3895 co-relation queries the response was YES. [2022-09-16 11:59:02,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31844 conditions, 14620 events. 6818/14620 cut-off events. For 3867/3895 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 137335 event pairs, 1440 based on Foata normal form. 136/13669 useless extension candidates. Maximal degree in co-relation 29805. Up to 2690 conditions per place. [2022-09-16 11:59:03,000 INFO L137 encePairwiseOnDemand]: 150/168 looper letters, 179 selfloop transitions, 33 changer transitions 0/319 dead transitions. [2022-09-16 11:59:03,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 319 transitions, 1412 flow [2022-09-16 11:59:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:59:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-09-16 11:59:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3511 transitions. [2022-09-16 11:59:03,006 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7463860544217688 [2022-09-16 11:59:03,006 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3511 transitions. [2022-09-16 11:59:03,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3511 transitions. [2022-09-16 11:59:03,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:03,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3511 transitions. [2022-09-16 11:59:03,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 125.39285714285714) internal successors, (3511), 28 states have internal predecessors, (3511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 168.0) internal successors, (4872), 29 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,017 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 168.0) internal successors, (4872), 29 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,018 INFO L175 Difference]: Start difference. First operand has 195 places, 164 transitions, 540 flow. Second operand 28 states and 3511 transitions. [2022-09-16 11:59:03,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 319 transitions, 1412 flow [2022-09-16 11:59:03,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 319 transitions, 1398 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:03,053 INFO L231 Difference]: Finished difference. Result has 223 places, 179 transitions, 687 flow [2022-09-16 11:59:03,054 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=687, PETRI_PLACES=223, PETRI_TRANSITIONS=179} [2022-09-16 11:59:03,054 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 80 predicate places. [2022-09-16 11:59:03,054 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 179 transitions, 687 flow [2022-09-16 11:59:03,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 121.65217391304348) internal successors, (2798), 23 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:03,055 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:03,074 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 11:59:03,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:03,267 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:59:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:03,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1437094970, now seen corresponding path program 2 times [2022-09-16 11:59:03,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:03,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251170120] [2022-09-16 11:59:03,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:03,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:03,347 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 11:59:03,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:03,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251170120] [2022-09-16 11:59:03,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251170120] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:03,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121176586] [2022-09-16 11:59:03,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:03,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:03,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:03,349 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 11:59:03,350 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 11:59:03,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:03,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:03,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:59:03,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:03,490 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 11:59:03,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:03,567 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 11:59:03,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121176586] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:03,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:03,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:59:03,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991004324] [2022-09-16 11:59:03,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:03,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:59:03,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:03,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:59:03,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:59:03,571 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 168 [2022-09-16 11:59:03,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 179 transitions, 687 flow. Second operand has 18 states, 18 states have (on average 126.61111111111111) internal successors, (2279), 18 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:03,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:03,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 168 [2022-09-16 11:59:03,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:06,284 INFO L130 PetriNetUnfolder]: 4950/22267 cut-off events. [2022-09-16 11:59:06,284 INFO L131 PetriNetUnfolder]: For 9014/9386 co-relation queries the response was YES. [2022-09-16 11:59:06,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44645 conditions, 22267 events. 4950/22267 cut-off events. For 9014/9386 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 276703 event pairs, 3594 based on Foata normal form. 374/21070 useless extension candidates. Maximal degree in co-relation 42744. Up to 1785 conditions per place. [2022-09-16 11:59:06,731 INFO L137 encePairwiseOnDemand]: 157/168 looper letters, 136 selfloop transitions, 25 changer transitions 1/286 dead transitions. [2022-09-16 11:59:06,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 286 transitions, 1370 flow [2022-09-16 11:59:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:59:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 11:59:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3105 transitions. [2022-09-16 11:59:06,739 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7700892857142857 [2022-09-16 11:59:06,739 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3105 transitions. [2022-09-16 11:59:06,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3105 transitions. [2022-09-16 11:59:06,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:06,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3105 transitions. [2022-09-16 11:59:06,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 129.375) internal successors, (3105), 24 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 168.0) internal successors, (4200), 25 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,755 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 168.0) internal successors, (4200), 25 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,755 INFO L175 Difference]: Start difference. First operand has 223 places, 179 transitions, 687 flow. Second operand 24 states and 3105 transitions. [2022-09-16 11:59:06,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 286 transitions, 1370 flow [2022-09-16 11:59:07,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 286 transitions, 1319 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-09-16 11:59:07,165 INFO L231 Difference]: Finished difference. Result has 230 places, 183 transitions, 711 flow [2022-09-16 11:59:07,165 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=711, PETRI_PLACES=230, PETRI_TRANSITIONS=183} [2022-09-16 11:59:07,166 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 87 predicate places. [2022-09-16 11:59:07,166 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 183 transitions, 711 flow [2022-09-16 11:59:07,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 126.61111111111111) internal successors, (2279), 18 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:07,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:07,185 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 11:59:07,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:07,385 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:59:07,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:07,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1153657876, now seen corresponding path program 1 times [2022-09-16 11:59:07,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:07,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66981587] [2022-09-16 11:59:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:07,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:07,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:07,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66981587] [2022-09-16 11:59:07,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66981587] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:07,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574784936] [2022-09-16 11:59:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:07,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:07,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:07,455 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 11:59:07,456 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 11:59:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:07,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:07,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:07,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:07,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574784936] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:07,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:07,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-09-16 11:59:07,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850518339] [2022-09-16 11:59:07,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:07,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:07,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:59:07,583 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-09-16 11:59:07,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 183 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:07,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-09-16 11:59:07,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:09,769 INFO L130 PetriNetUnfolder]: 8581/18377 cut-off events. [2022-09-16 11:59:09,770 INFO L131 PetriNetUnfolder]: For 6820/7324 co-relation queries the response was YES. [2022-09-16 11:59:09,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41242 conditions, 18377 events. 8581/18377 cut-off events. For 6820/7324 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 187167 event pairs, 2811 based on Foata normal form. 1021/17980 useless extension candidates. Maximal degree in co-relation 39412. Up to 5291 conditions per place. [2022-09-16 11:59:09,903 INFO L137 encePairwiseOnDemand]: 160/168 looper letters, 52 selfloop transitions, 11 changer transitions 6/215 dead transitions. [2022-09-16 11:59:09,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 215 transitions, 967 flow [2022-09-16 11:59:09,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:09,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 961 transitions. [2022-09-16 11:59:09,905 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8171768707482994 [2022-09-16 11:59:09,905 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 961 transitions. [2022-09-16 11:59:09,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 961 transitions. [2022-09-16 11:59:09,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:09,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 961 transitions. [2022-09-16 11:59:09,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.28571428571428) internal successors, (961), 7 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,908 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,908 INFO L175 Difference]: Start difference. First operand has 230 places, 183 transitions, 711 flow. Second operand 7 states and 961 transitions. [2022-09-16 11:59:09,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 215 transitions, 967 flow [2022-09-16 11:59:09,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 215 transitions, 903 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-09-16 11:59:09,993 INFO L231 Difference]: Finished difference. Result has 217 places, 179 transitions, 658 flow [2022-09-16 11:59:09,993 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=658, PETRI_PLACES=217, PETRI_TRANSITIONS=179} [2022-09-16 11:59:09,994 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 74 predicate places. [2022-09-16 11:59:09,994 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 179 transitions, 658 flow [2022-09-16 11:59:09,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:09,994 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] [2022-09-16 11:59:10,012 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 11:59:10,207 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,SelfDestructingSolverStorable12 [2022-09-16 11:59:10,207 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:59:10,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:10,208 INFO L85 PathProgramCache]: Analyzing trace with hash 684918698, now seen corresponding path program 1 times [2022-09-16 11:59:10,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:10,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027864511] [2022-09-16 11:59:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:10,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:10,249 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 11:59:10,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:10,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027864511] [2022-09-16 11:59:10,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027864511] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:10,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731470104] [2022-09-16 11:59:10,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:10,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:10,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:10,251 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 11:59:10,267 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 11:59:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:10,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:10,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:10,432 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 11:59:10,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:10,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731470104] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:10,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:10,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:59:10,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385834290] [2022-09-16 11:59:10,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:10,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:10,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:10,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:10,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:59:10,434 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-09-16 11:59:10,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 179 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 142.33333333333334) internal successors, (854), 6 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:10,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-09-16 11:59:10,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:11,587 INFO L130 PetriNetUnfolder]: 4318/9621 cut-off events. [2022-09-16 11:59:11,587 INFO L131 PetriNetUnfolder]: For 2741/2741 co-relation queries the response was YES. [2022-09-16 11:59:11,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23079 conditions, 9621 events. 4318/9621 cut-off events. For 2741/2741 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 90579 event pairs, 70 based on Foata normal form. 190/9358 useless extension candidates. Maximal degree in co-relation 23028. Up to 2377 conditions per place. [2022-09-16 11:59:11,670 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 44 selfloop transitions, 13 changer transitions 0/202 dead transitions. [2022-09-16 11:59:11,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 202 transitions, 828 flow [2022-09-16 11:59:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:11,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1026 transitions. [2022-09-16 11:59:11,673 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8724489795918368 [2022-09-16 11:59:11,673 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1026 transitions. [2022-09-16 11:59:11,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1026 transitions. [2022-09-16 11:59:11,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:11,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1026 transitions. [2022-09-16 11:59:11,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:11,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:11,676 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:11,676 INFO L175 Difference]: Start difference. First operand has 217 places, 179 transitions, 658 flow. Second operand 7 states and 1026 transitions. [2022-09-16 11:59:11,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 202 transitions, 828 flow [2022-09-16 11:59:11,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 202 transitions, 804 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:59:11,704 INFO L231 Difference]: Finished difference. Result has 213 places, 177 transitions, 646 flow [2022-09-16 11:59:11,704 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=646, PETRI_PLACES=213, PETRI_TRANSITIONS=177} [2022-09-16 11:59:11,704 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 70 predicate places. [2022-09-16 11:59:11,704 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 177 transitions, 646 flow [2022-09-16 11:59:11,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.33333333333334) internal successors, (854), 6 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:11,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:11,705 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] [2022-09-16 11:59:11,724 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 11:59:11,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-09-16 11:59:11,922 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:59:11,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1153031729, now seen corresponding path program 2 times [2022-09-16 11:59:11,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:11,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163712626] [2022-09-16 11:59:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:11,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:12,038 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 11:59:12,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:12,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163712626] [2022-09-16 11:59:12,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163712626] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:12,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9203061] [2022-09-16 11:59:12,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:12,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:12,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:12,041 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 11:59:12,048 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 11:59:12,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:12,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:12,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:12,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:12,204 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 11:59:12,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:12,310 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 11:59:12,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9203061] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:12,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:12,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-09-16 11:59:12,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427033383] [2022-09-16 11:59:12,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:12,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:59:12,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:12,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:59:12,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:59:12,313 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 168 [2022-09-16 11:59:12,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 177 transitions, 646 flow. Second operand has 19 states, 19 states have (on average 119.21052631578948) internal successors, (2265), 19 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:12,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:12,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 168 [2022-09-16 11:59:12,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:15,626 INFO L130 PetriNetUnfolder]: 8343/21634 cut-off events. [2022-09-16 11:59:15,627 INFO L131 PetriNetUnfolder]: For 10469/10972 co-relation queries the response was YES. [2022-09-16 11:59:15,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48944 conditions, 21634 events. 8343/21634 cut-off events. For 10469/10972 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 233750 event pairs, 1562 based on Foata normal form. 254/20516 useless extension candidates. Maximal degree in co-relation 46024. Up to 3685 conditions per place. [2022-09-16 11:59:15,804 INFO L137 encePairwiseOnDemand]: 150/168 looper letters, 224 selfloop transitions, 48 changer transitions 0/373 dead transitions. [2022-09-16 11:59:15,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 373 transitions, 1795 flow [2022-09-16 11:59:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-16 11:59:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-09-16 11:59:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4858 transitions. [2022-09-16 11:59:15,809 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2022-09-16 11:59:15,809 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4858 transitions. [2022-09-16 11:59:15,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4858 transitions. [2022-09-16 11:59:15,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:15,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4858 transitions. [2022-09-16 11:59:15,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 121.45) internal successors, (4858), 40 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:15,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 168.0) internal successors, (6888), 41 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:15,821 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 168.0) internal successors, (6888), 41 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:15,821 INFO L175 Difference]: Start difference. First operand has 213 places, 177 transitions, 646 flow. Second operand 40 states and 4858 transitions. [2022-09-16 11:59:15,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 373 transitions, 1795 flow [2022-09-16 11:59:15,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 373 transitions, 1755 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-09-16 11:59:15,925 INFO L231 Difference]: Finished difference. Result has 248 places, 188 transitions, 798 flow [2022-09-16 11:59:15,926 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=798, PETRI_PLACES=248, PETRI_TRANSITIONS=188} [2022-09-16 11:59:15,926 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 105 predicate places. [2022-09-16 11:59:15,926 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 188 transitions, 798 flow [2022-09-16 11:59:15,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 119.21052631578948) internal successors, (2265), 19 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:15,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:15,927 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:15,947 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 11:59:16,131 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,SelfDestructingSolverStorable14 [2022-09-16 11:59:16,132 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:59:16,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:16,132 INFO L85 PathProgramCache]: Analyzing trace with hash -346541334, now seen corresponding path program 2 times [2022-09-16 11:59:16,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:16,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315688054] [2022-09-16 11:59:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:16,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:16,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:16,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315688054] [2022-09-16 11:59:16,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315688054] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:16,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676468647] [2022-09-16 11:59:16,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:16,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:16,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:16,337 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 11:59:16,338 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 11:59:16,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:16,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:16,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:16,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:16,475 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 11:59:16,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 11:59:16,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676468647] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:16,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:16,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-09-16 11:59:16,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472500084] [2022-09-16 11:59:16,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:16,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:59:16,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:16,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:59:16,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:59:16,574 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 168 [2022-09-16 11:59:16,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 188 transitions, 798 flow. Second operand has 16 states, 16 states have (on average 136.6875) internal successors, (2187), 16 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:16,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:16,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 168 [2022-09-16 11:59:16,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:19,538 INFO L130 PetriNetUnfolder]: 11139/21985 cut-off events. [2022-09-16 11:59:19,539 INFO L131 PetriNetUnfolder]: For 7088/7094 co-relation queries the response was YES. [2022-09-16 11:59:19,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49559 conditions, 21985 events. 11139/21985 cut-off events. For 7088/7094 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 221692 event pairs, 528 based on Foata normal form. 284/20664 useless extension candidates. Maximal degree in co-relation 49357. Up to 3075 conditions per place. [2022-09-16 11:59:19,676 INFO L137 encePairwiseOnDemand]: 159/168 looper letters, 0 selfloop transitions, 0 changer transitions 307/307 dead transitions. [2022-09-16 11:59:19,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 307 transitions, 1412 flow [2022-09-16 11:59:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:59:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 11:59:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3082 transitions. [2022-09-16 11:59:19,679 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8338744588744589 [2022-09-16 11:59:19,679 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3082 transitions. [2022-09-16 11:59:19,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3082 transitions. [2022-09-16 11:59:19,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:19,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3082 transitions. [2022-09-16 11:59:19,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 140.0909090909091) internal successors, (3082), 22 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:19,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 168.0) internal successors, (3864), 23 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:19,686 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 168.0) internal successors, (3864), 23 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:19,686 INFO L175 Difference]: Start difference. First operand has 248 places, 188 transitions, 798 flow. Second operand 22 states and 3082 transitions. [2022-09-16 11:59:19,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 307 transitions, 1412 flow [2022-09-16 11:59:19,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 307 transitions, 1341 flow, removed 5 selfloop flow, removed 25 redundant places. [2022-09-16 11:59:19,734 INFO L231 Difference]: Finished difference. Result has 243 places, 0 transitions, 0 flow [2022-09-16 11:59:19,735 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=243, PETRI_TRANSITIONS=0} [2022-09-16 11:59:19,735 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 100 predicate places. [2022-09-16 11:59:19,735 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 0 transitions, 0 flow [2022-09-16 11:59:19,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 136.6875) internal successors, (2187), 16 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:19,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-09-16 11:59:19,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-09-16 11:59:19,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-09-16 11:59:19,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-09-16 11:59:19,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-09-16 11:59:19,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-09-16 11:59:19,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-09-16 11:59:19,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-09-16 11:59:19,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-09-16 11:59:19,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-09-16 11:59:19,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-09-16 11:59:19,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-09-16 11:59:19,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-09-16 11:59:19,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-09-16 11:59:19,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-09-16 11:59:19,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-09-16 11:59:19,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-09-16 11:59:19,756 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 11:59:19,955 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,SelfDestructingSolverStorable15 [2022-09-16 11:59:19,956 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:19,959 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:59:19,960 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:59:19,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:59:19 BasicIcfg [2022-09-16 11:59:19,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:59:19,963 INFO L158 Benchmark]: Toolchain (without parser) took 30073.29ms. Allocated memory was 184.5MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 129.6MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2022-09-16 11:59:19,963 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory was 146.1MB in the beginning and 146.0MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:59:19,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.50ms. Allocated memory is still 184.5MB. Free memory was 129.5MB in the beginning and 157.0MB in the end (delta: -27.5MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-09-16 11:59:19,963 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.49ms. Allocated memory is still 184.5MB. Free memory was 157.0MB in the beginning and 155.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:59:19,964 INFO L158 Benchmark]: Boogie Preprocessor took 20.30ms. Allocated memory is still 184.5MB. Free memory was 155.5MB in the beginning and 154.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:59:19,964 INFO L158 Benchmark]: RCFGBuilder took 438.26ms. Allocated memory is still 184.5MB. Free memory was 154.0MB in the beginning and 134.1MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-09-16 11:59:19,964 INFO L158 Benchmark]: TraceAbstraction took 29315.01ms. Allocated memory was 184.5MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 133.0MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2022-09-16 11:59:19,965 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 184.5MB. Free memory was 146.1MB in the beginning and 146.0MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 269.50ms. Allocated memory is still 184.5MB. Free memory was 129.5MB in the beginning and 157.0MB in the end (delta: -27.5MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.49ms. Allocated memory is still 184.5MB. Free memory was 157.0MB in the beginning and 155.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.30ms. Allocated memory is still 184.5MB. Free memory was 155.5MB in the beginning and 154.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 438.26ms. Allocated memory is still 184.5MB. Free memory was 154.0MB in the beginning and 134.1MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 29315.01ms. Allocated memory was 184.5MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 133.0MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: 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, 199 locations, 17 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: 29.2s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 23.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3139 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3139 mSDsluCounter, 419 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1400 mSDsCounter, 207 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3075 IncrementalHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 207 mSolverCounterUnsat, 92 mSDtfsCounter, 3075 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1679 GetRequests, 1374 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=798occurred in iteration=15, InterpolantAutomatonStates: 218, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 2198 NumberOfCodeBlocks, 2102 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2683 ConstructedInterpolants, 0 QuantifiedInterpolants, 5517 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1975 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 309/597 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:59:19,995 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...