/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/chl-file-item-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:44:22,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:44:22,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:44:22,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:44:22,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:44:22,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:44:22,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:44:22,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:44:22,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:44:22,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:44:22,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:44:22,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:44:22,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:44:22,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:44:22,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:44:22,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:44:22,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:44:22,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:44:22,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:44:22,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:44:22,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:44:22,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:44:22,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:44:22,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:44:22,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:44:22,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:44:22,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:44:22,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:44:22,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:44:22,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:44:22,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:44:22,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:44:22,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:44:22,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:44:22,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:44:22,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:44:22,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:44:22,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:44:22,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:44:22,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:44:22,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:44:22,736 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 11:44:22,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:44:22,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:44:22,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:44:22,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:44:22,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:44:22,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:44:22,770 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:44:22,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:44:22,771 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:44:22,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:44:22,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:44:22,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:44:22,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:44:22,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:44:22,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:44:22,771 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:44:22,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:44:22,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:44:22,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:44:22,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:44:22,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:44:22,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:44:22,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:44:22,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:44:22,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:44:22,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:44:22,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:44:22,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:44:22,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:44:22,773 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:44:22,773 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:44:22,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:44:23,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:44:23,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:44:23,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:44:23,027 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:44:23,028 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:44:23,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c [2022-09-16 11:44:23,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb7800a2/f781f9f7c86e43a4b1bbc07e5bbd73b5/FLAGb9c078da6 [2022-09-16 11:44:23,549 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:44:23,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c [2022-09-16 11:44:23,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb7800a2/f781f9f7c86e43a4b1bbc07e5bbd73b5/FLAGb9c078da6 [2022-09-16 11:44:23,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb7800a2/f781f9f7c86e43a4b1bbc07e5bbd73b5 [2022-09-16 11:44:23,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:44:23,947 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:44:23,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:44:23,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:44:23,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:44:23,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:44:23" (1/1) ... [2022-09-16 11:44:23,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@259abb94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:23, skipping insertion in model container [2022-09-16 11:44:23,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:44:23" (1/1) ... [2022-09-16 11:44:23,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:44:23,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:44:24,147 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/chl-file-item-subst.wvr.c[3015,3028] [2022-09-16 11:44:24,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:44:24,154 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:44:24,169 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/chl-file-item-subst.wvr.c[3015,3028] [2022-09-16 11:44:24,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:44:24,179 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:44:24,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:24 WrapperNode [2022-09-16 11:44:24,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:44:24,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:44:24,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:44:24,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:44:24,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:24" (1/1) ... [2022-09-16 11:44:24,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:24" (1/1) ... [2022-09-16 11:44:24,223 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 263 [2022-09-16 11:44:24,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:44:24,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:44:24,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:44:24,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:44:24,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:24" (1/1) ... [2022-09-16 11:44:24,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:24" (1/1) ... [2022-09-16 11:44:24,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:24" (1/1) ... [2022-09-16 11:44:24,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:24" (1/1) ... [2022-09-16 11:44:24,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:24" (1/1) ... [2022-09-16 11:44:24,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:24" (1/1) ... [2022-09-16 11:44:24,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:24" (1/1) ... [2022-09-16 11:44:24,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:44:24,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:44:24,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:44:24,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:44:24,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:24" (1/1) ... [2022-09-16 11:44:24,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:44:24,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:44:24,326 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 11:44:24,335 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 11:44:24,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:44:24,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:44:24,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:44:24,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:44:24,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:44:24,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:44:24,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:44:24,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:44:24,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:44:24,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:44:24,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:44:24,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:44:24,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:44:24,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:44:24,364 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 11:44:24,490 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:44:24,491 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:44:24,985 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:44:24,994 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:44:24,994 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 11:44:24,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:44:24 BoogieIcfgContainer [2022-09-16 11:44:24,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:44:24,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:44:24,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:44:25,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:44:25,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:44:23" (1/3) ... [2022-09-16 11:44:25,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b17a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:44:25, skipping insertion in model container [2022-09-16 11:44:25,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:24" (2/3) ... [2022-09-16 11:44:25,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b17a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:44:25, skipping insertion in model container [2022-09-16 11:44:25,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:44:24" (3/3) ... [2022-09-16 11:44:25,002 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2022-09-16 11:44:25,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:44:25,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-09-16 11:44:25,014 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:44:25,090 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:44:25,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 351 transitions, 726 flow [2022-09-16 11:44:25,319 INFO L130 PetriNetUnfolder]: 32/348 cut-off events. [2022-09-16 11:44:25,319 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:44:25,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 348 events. 32/348 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1058 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 265. Up to 2 conditions per place. [2022-09-16 11:44:25,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 351 transitions, 726 flow [2022-09-16 11:44:25,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 319 transitions, 653 flow [2022-09-16 11:44:25,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:44:25,350 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;@3a386182, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:44:25,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-09-16 11:44:25,389 INFO L130 PetriNetUnfolder]: 10/135 cut-off events. [2022-09-16 11:44:25,389 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:44:25,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:25,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:25,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:25,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:25,394 INFO L85 PathProgramCache]: Analyzing trace with hash -334600281, now seen corresponding path program 1 times [2022-09-16 11:44:25,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:25,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62971052] [2022-09-16 11:44:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:25,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:25,659 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 11:44:25,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:25,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62971052] [2022-09-16 11:44:25,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62971052] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:25,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:25,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:25,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421085379] [2022-09-16 11:44:25,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:25,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:25,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:25,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:25,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:25,720 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 351 [2022-09-16 11:44:25,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 319 transitions, 653 flow. Second operand has 6 states, 6 states have (on average 311.8333333333333) internal successors, (1871), 6 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:25,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:25,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 351 [2022-09-16 11:44:25,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:25,976 INFO L130 PetriNetUnfolder]: 84/572 cut-off events. [2022-09-16 11:44:25,976 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-09-16 11:44:25,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 572 events. 84/572 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3019 event pairs, 2 based on Foata normal form. 120/618 useless extension candidates. Maximal degree in co-relation 694. Up to 119 conditions per place. [2022-09-16 11:44:25,993 INFO L137 encePairwiseOnDemand]: 339/351 looper letters, 33 selfloop transitions, 5 changer transitions 0/320 dead transitions. [2022-09-16 11:44:25,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 320 transitions, 749 flow [2022-09-16 11:44:25,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:44:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:44:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1913 transitions. [2022-09-16 11:44:26,013 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9083570750237417 [2022-09-16 11:44:26,014 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1913 transitions. [2022-09-16 11:44:26,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1913 transitions. [2022-09-16 11:44:26,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:26,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1913 transitions. [2022-09-16 11:44:26,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.8333333333333) internal successors, (1913), 6 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:26,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:26,059 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:26,060 INFO L175 Difference]: Start difference. First operand has 299 places, 319 transitions, 653 flow. Second operand 6 states and 1913 transitions. [2022-09-16 11:44:26,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 320 transitions, 749 flow [2022-09-16 11:44:26,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 320 transitions, 730 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:44:26,083 INFO L231 Difference]: Finished difference. Result has 298 places, 312 transitions, 640 flow [2022-09-16 11:44:26,085 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=640, PETRI_PLACES=298, PETRI_TRANSITIONS=312} [2022-09-16 11:44:26,089 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, -1 predicate places. [2022-09-16 11:44:26,089 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 312 transitions, 640 flow [2022-09-16 11:44:26,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 311.8333333333333) internal successors, (1871), 6 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:26,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:26,091 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] [2022-09-16 11:44:26,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:44:26,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:26,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:26,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1782673213, now seen corresponding path program 1 times [2022-09-16 11:44:26,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:26,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334431447] [2022-09-16 11:44:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:26,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:26,201 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 11:44:26,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:26,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334431447] [2022-09-16 11:44:26,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334431447] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:26,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:26,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:26,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733397893] [2022-09-16 11:44:26,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:26,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:26,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:26,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:26,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:26,208 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 351 [2022-09-16 11:44:26,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 312 transitions, 640 flow. Second operand has 4 states, 4 states have (on average 314.75) internal successors, (1259), 4 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:26,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:26,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 351 [2022-09-16 11:44:26,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:26,471 INFO L130 PetriNetUnfolder]: 115/962 cut-off events. [2022-09-16 11:44:26,473 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-09-16 11:44:26,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 962 events. 115/962 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6399 event pairs, 24 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 744. Up to 71 conditions per place. [2022-09-16 11:44:26,511 INFO L137 encePairwiseOnDemand]: 345/351 looper letters, 37 selfloop transitions, 4 changer transitions 0/326 dead transitions. [2022-09-16 11:44:26,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 326 transitions, 758 flow [2022-09-16 11:44:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:26,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1295 transitions. [2022-09-16 11:44:26,515 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9223646723646723 [2022-09-16 11:44:26,516 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1295 transitions. [2022-09-16 11:44:26,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1295 transitions. [2022-09-16 11:44:26,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:26,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1295 transitions. [2022-09-16 11:44:26,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 323.75) internal successors, (1295), 4 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:26,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:26,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:26,522 INFO L175 Difference]: Start difference. First operand has 298 places, 312 transitions, 640 flow. Second operand 4 states and 1295 transitions. [2022-09-16 11:44:26,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 326 transitions, 758 flow [2022-09-16 11:44:26,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 326 transitions, 749 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:44:26,533 INFO L231 Difference]: Finished difference. Result has 299 places, 313 transitions, 655 flow [2022-09-16 11:44:26,534 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=655, PETRI_PLACES=299, PETRI_TRANSITIONS=313} [2022-09-16 11:44:26,535 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 0 predicate places. [2022-09-16 11:44:26,535 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 313 transitions, 655 flow [2022-09-16 11:44:26,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.75) internal successors, (1259), 4 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:26,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:26,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:26,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:44:26,537 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:26,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:26,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1705345548, now seen corresponding path program 1 times [2022-09-16 11:44:26,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:26,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789152009] [2022-09-16 11:44:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:26,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:26,655 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 11:44:26,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:26,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789152009] [2022-09-16 11:44:26,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789152009] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:26,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:26,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:26,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989171928] [2022-09-16 11:44:26,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:26,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:26,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:26,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:26,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:26,661 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 351 [2022-09-16 11:44:26,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 313 transitions, 655 flow. Second operand has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:26,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:26,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 351 [2022-09-16 11:44:26,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:27,016 INFO L130 PetriNetUnfolder]: 242/1310 cut-off events. [2022-09-16 11:44:27,017 INFO L131 PetriNetUnfolder]: For 123/161 co-relation queries the response was YES. [2022-09-16 11:44:27,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 1310 events. 242/1310 cut-off events. For 123/161 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9617 event pairs, 6 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 1533. Up to 327 conditions per place. [2022-09-16 11:44:27,051 INFO L137 encePairwiseOnDemand]: 345/351 looper letters, 32 selfloop transitions, 5 changer transitions 0/319 dead transitions. [2022-09-16 11:44:27,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 319 transitions, 748 flow [2022-09-16 11:44:27,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:44:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:44:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1898 transitions. [2022-09-16 11:44:27,055 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9012345679012346 [2022-09-16 11:44:27,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1898 transitions. [2022-09-16 11:44:27,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1898 transitions. [2022-09-16 11:44:27,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:27,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1898 transitions. [2022-09-16 11:44:27,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 316.3333333333333) internal successors, (1898), 6 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,065 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,065 INFO L175 Difference]: Start difference. First operand has 299 places, 313 transitions, 655 flow. Second operand 6 states and 1898 transitions. [2022-09-16 11:44:27,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 319 transitions, 748 flow [2022-09-16 11:44:27,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 319 transitions, 748 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:44:27,071 INFO L231 Difference]: Finished difference. Result has 303 places, 312 transitions, 663 flow [2022-09-16 11:44:27,071 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=663, PETRI_PLACES=303, PETRI_TRANSITIONS=312} [2022-09-16 11:44:27,072 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 4 predicate places. [2022-09-16 11:44:27,072 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 312 transitions, 663 flow [2022-09-16 11:44:27,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:27,074 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] [2022-09-16 11:44:27,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:44:27,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:27,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:27,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1326103448, now seen corresponding path program 1 times [2022-09-16 11:44:27,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:27,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627936608] [2022-09-16 11:44:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:27,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:27,122 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 11:44:27,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:27,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627936608] [2022-09-16 11:44:27,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627936608] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:27,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:27,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:27,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311317540] [2022-09-16 11:44:27,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:27,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:27,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:27,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:27,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:27,125 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 351 [2022-09-16 11:44:27,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 312 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:27,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 351 [2022-09-16 11:44:27,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:27,384 INFO L130 PetriNetUnfolder]: 158/1123 cut-off events. [2022-09-16 11:44:27,385 INFO L131 PetriNetUnfolder]: For 104/400 co-relation queries the response was YES. [2022-09-16 11:44:27,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 1123 events. 158/1123 cut-off events. For 104/400 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8235 event pairs, 48 based on Foata normal form. 0/933 useless extension candidates. Maximal degree in co-relation 1220. Up to 126 conditions per place. [2022-09-16 11:44:27,411 INFO L137 encePairwiseOnDemand]: 345/351 looper letters, 36 selfloop transitions, 4 changer transitions 0/325 dead transitions. [2022-09-16 11:44:27,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 325 transitions, 776 flow [2022-09-16 11:44:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1294 transitions. [2022-09-16 11:44:27,414 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9216524216524217 [2022-09-16 11:44:27,414 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1294 transitions. [2022-09-16 11:44:27,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1294 transitions. [2022-09-16 11:44:27,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:27,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1294 transitions. [2022-09-16 11:44:27,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 323.5) internal successors, (1294), 4 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,419 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,419 INFO L175 Difference]: Start difference. First operand has 303 places, 312 transitions, 663 flow. Second operand 4 states and 1294 transitions. [2022-09-16 11:44:27,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 325 transitions, 776 flow [2022-09-16 11:44:27,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 325 transitions, 767 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:44:27,423 INFO L231 Difference]: Finished difference. Result has 304 places, 313 transitions, 678 flow [2022-09-16 11:44:27,423 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=678, PETRI_PLACES=304, PETRI_TRANSITIONS=313} [2022-09-16 11:44:27,424 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 5 predicate places. [2022-09-16 11:44:27,424 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 313 transitions, 678 flow [2022-09-16 11:44:27,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:27,425 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 11:44:27,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:44:27,425 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:27,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:27,425 INFO L85 PathProgramCache]: Analyzing trace with hash -417917910, now seen corresponding path program 1 times [2022-09-16 11:44:27,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:27,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283874374] [2022-09-16 11:44:27,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:27,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:27,467 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 11:44:27,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:27,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283874374] [2022-09-16 11:44:27,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283874374] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:27,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:27,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:27,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25444667] [2022-09-16 11:44:27,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:27,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:27,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:27,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:27,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:27,469 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 351 [2022-09-16 11:44:27,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 313 transitions, 678 flow. Second operand has 4 states, 4 states have (on average 315.25) internal successors, (1261), 4 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:27,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 351 [2022-09-16 11:44:27,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:27,672 INFO L130 PetriNetUnfolder]: 109/1136 cut-off events. [2022-09-16 11:44:27,672 INFO L131 PetriNetUnfolder]: For 55/114 co-relation queries the response was YES. [2022-09-16 11:44:27,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 1136 events. 109/1136 cut-off events. For 55/114 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7986 event pairs, 24 based on Foata normal form. 5/995 useless extension candidates. Maximal degree in co-relation 1262. Up to 72 conditions per place. [2022-09-16 11:44:27,697 INFO L137 encePairwiseOnDemand]: 347/351 looper letters, 37 selfloop transitions, 3 changer transitions 0/325 dead transitions. [2022-09-16 11:44:27,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 325 transitions, 786 flow [2022-09-16 11:44:27,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:27,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1293 transitions. [2022-09-16 11:44:27,699 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9209401709401709 [2022-09-16 11:44:27,699 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1293 transitions. [2022-09-16 11:44:27,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1293 transitions. [2022-09-16 11:44:27,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:27,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1293 transitions. [2022-09-16 11:44:27,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 323.25) internal successors, (1293), 4 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,704 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,704 INFO L175 Difference]: Start difference. First operand has 304 places, 313 transitions, 678 flow. Second operand 4 states and 1293 transitions. [2022-09-16 11:44:27,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 325 transitions, 786 flow [2022-09-16 11:44:27,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 325 transitions, 784 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:27,708 INFO L231 Difference]: Finished difference. Result has 306 places, 312 transitions, 676 flow [2022-09-16 11:44:27,709 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=676, PETRI_PLACES=306, PETRI_TRANSITIONS=312} [2022-09-16 11:44:27,710 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 7 predicate places. [2022-09-16 11:44:27,710 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 312 transitions, 676 flow [2022-09-16 11:44:27,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.25) internal successors, (1261), 4 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:27,711 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] [2022-09-16 11:44:27,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:44:27,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:27,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:27,712 INFO L85 PathProgramCache]: Analyzing trace with hash -70552399, now seen corresponding path program 1 times [2022-09-16 11:44:27,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:27,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017643661] [2022-09-16 11:44:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:27,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:27,755 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 11:44:27,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:27,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017643661] [2022-09-16 11:44:27,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017643661] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:27,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:27,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:27,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607497643] [2022-09-16 11:44:27,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:27,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:27,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:27,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:27,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:27,758 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 351 [2022-09-16 11:44:27,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 312 transitions, 676 flow. Second operand has 6 states, 6 states have (on average 312.1666666666667) internal successors, (1873), 6 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:27,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:27,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 351 [2022-09-16 11:44:27,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:27,944 INFO L130 PetriNetUnfolder]: 102/852 cut-off events. [2022-09-16 11:44:27,944 INFO L131 PetriNetUnfolder]: For 43/323 co-relation queries the response was YES. [2022-09-16 11:44:27,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 852 events. 102/852 cut-off events. For 43/323 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5384 event pairs, 4 based on Foata normal form. 4/767 useless extension candidates. Maximal degree in co-relation 1097. Up to 168 conditions per place. [2022-09-16 11:44:27,969 INFO L137 encePairwiseOnDemand]: 345/351 looper letters, 31 selfloop transitions, 5 changer transitions 0/319 dead transitions. [2022-09-16 11:44:27,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 319 transitions, 770 flow [2022-09-16 11:44:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:44:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:44:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1897 transitions. [2022-09-16 11:44:27,973 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9007597340930674 [2022-09-16 11:44:27,973 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1897 transitions. [2022-09-16 11:44:27,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1897 transitions. [2022-09-16 11:44:27,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:27,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1897 transitions. [2022-09-16 11:44:28,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 316.1666666666667) internal successors, (1897), 6 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:28,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:28,006 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:28,006 INFO L175 Difference]: Start difference. First operand has 306 places, 312 transitions, 676 flow. Second operand 6 states and 1897 transitions. [2022-09-16 11:44:28,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 319 transitions, 770 flow [2022-09-16 11:44:28,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 319 transitions, 765 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:28,011 INFO L231 Difference]: Finished difference. Result has 308 places, 311 transitions, 679 flow [2022-09-16 11:44:28,011 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=679, PETRI_PLACES=308, PETRI_TRANSITIONS=311} [2022-09-16 11:44:28,012 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 9 predicate places. [2022-09-16 11:44:28,012 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 311 transitions, 679 flow [2022-09-16 11:44:28,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 312.1666666666667) internal successors, (1873), 6 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:28,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:28,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:28,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:44:28,013 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:28,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:28,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1990492629, now seen corresponding path program 1 times [2022-09-16 11:44:28,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:28,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080860028] [2022-09-16 11:44:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:28,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:28,053 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 11:44:28,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:28,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080860028] [2022-09-16 11:44:28,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080860028] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:28,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:28,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:28,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044900528] [2022-09-16 11:44:28,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:28,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:28,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:28,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:28,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:28,062 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 351 [2022-09-16 11:44:28,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 311 transitions, 679 flow. Second operand has 4 states, 4 states have (on average 315.5) internal successors, (1262), 4 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:28,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:28,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 351 [2022-09-16 11:44:28,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:28,439 INFO L130 PetriNetUnfolder]: 122/1248 cut-off events. [2022-09-16 11:44:28,439 INFO L131 PetriNetUnfolder]: For 33/109 co-relation queries the response was YES. [2022-09-16 11:44:28,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637 conditions, 1248 events. 122/1248 cut-off events. For 33/109 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9208 event pairs, 36 based on Foata normal form. 5/1100 useless extension candidates. Maximal degree in co-relation 1439. Up to 106 conditions per place. [2022-09-16 11:44:28,491 INFO L137 encePairwiseOnDemand]: 347/351 looper letters, 34 selfloop transitions, 3 changer transitions 0/323 dead transitions. [2022-09-16 11:44:28,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 323 transitions, 783 flow [2022-09-16 11:44:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:28,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1290 transitions. [2022-09-16 11:44:28,495 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9188034188034188 [2022-09-16 11:44:28,495 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1290 transitions. [2022-09-16 11:44:28,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1290 transitions. [2022-09-16 11:44:28,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:28,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1290 transitions. [2022-09-16 11:44:28,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 322.5) internal successors, (1290), 4 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:28,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:28,501 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:28,501 INFO L175 Difference]: Start difference. First operand has 308 places, 311 transitions, 679 flow. Second operand 4 states and 1290 transitions. [2022-09-16 11:44:28,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 323 transitions, 783 flow [2022-09-16 11:44:28,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 323 transitions, 772 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:44:28,509 INFO L231 Difference]: Finished difference. Result has 306 places, 311 transitions, 677 flow [2022-09-16 11:44:28,510 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=677, PETRI_PLACES=306, PETRI_TRANSITIONS=311} [2022-09-16 11:44:28,511 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 7 predicate places. [2022-09-16 11:44:28,511 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 311 transitions, 677 flow [2022-09-16 11:44:28,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.5) internal successors, (1262), 4 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:28,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:28,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:28,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:44:28,512 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:28,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:28,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1220350640, now seen corresponding path program 1 times [2022-09-16 11:44:28,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:28,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317655743] [2022-09-16 11:44:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:28,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:28,619 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 11:44:28,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:28,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317655743] [2022-09-16 11:44:28,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317655743] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:28,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:28,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:28,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534247671] [2022-09-16 11:44:28,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:28,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:28,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:28,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:28,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:28,622 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 351 [2022-09-16 11:44:28,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 311 transitions, 677 flow. Second operand has 6 states, 6 states have (on average 312.1666666666667) internal successors, (1873), 6 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:28,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:28,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 351 [2022-09-16 11:44:28,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:28,998 INFO L130 PetriNetUnfolder]: 496/2198 cut-off events. [2022-09-16 11:44:28,998 INFO L131 PetriNetUnfolder]: For 365/526 co-relation queries the response was YES. [2022-09-16 11:44:29,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 2198 events. 496/2198 cut-off events. For 365/526 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19933 event pairs, 5 based on Foata normal form. 0/1781 useless extension candidates. Maximal degree in co-relation 2596. Up to 749 conditions per place. [2022-09-16 11:44:29,035 INFO L137 encePairwiseOnDemand]: 345/351 looper letters, 31 selfloop transitions, 5 changer transitions 0/316 dead transitions. [2022-09-16 11:44:29,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 316 transitions, 763 flow [2022-09-16 11:44:29,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:44:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:44:29,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1897 transitions. [2022-09-16 11:44:29,039 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9007597340930674 [2022-09-16 11:44:29,039 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1897 transitions. [2022-09-16 11:44:29,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1897 transitions. [2022-09-16 11:44:29,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:29,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1897 transitions. [2022-09-16 11:44:29,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 316.1666666666667) internal successors, (1897), 6 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,046 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,046 INFO L175 Difference]: Start difference. First operand has 306 places, 311 transitions, 677 flow. Second operand 6 states and 1897 transitions. [2022-09-16 11:44:29,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 316 transitions, 763 flow [2022-09-16 11:44:29,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 316 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:29,050 INFO L231 Difference]: Finished difference. Result has 309 places, 310 transitions, 683 flow [2022-09-16 11:44:29,051 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=683, PETRI_PLACES=309, PETRI_TRANSITIONS=310} [2022-09-16 11:44:29,051 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 10 predicate places. [2022-09-16 11:44:29,052 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 310 transitions, 683 flow [2022-09-16 11:44:29,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 312.1666666666667) internal successors, (1873), 6 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:29,053 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] [2022-09-16 11:44:29,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:44:29,053 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:29,053 INFO L85 PathProgramCache]: Analyzing trace with hash 823836894, now seen corresponding path program 1 times [2022-09-16 11:44:29,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:29,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411866] [2022-09-16 11:44:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:29,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:29,081 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 11:44:29,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:29,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411866] [2022-09-16 11:44:29,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411866] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:29,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:29,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:29,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909003272] [2022-09-16 11:44:29,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:29,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:29,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:29,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:29,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:29,083 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 351 [2022-09-16 11:44:29,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 310 transitions, 683 flow. Second operand has 4 states, 4 states have (on average 315.25) internal successors, (1261), 4 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:29,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 351 [2022-09-16 11:44:29,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:29,462 INFO L130 PetriNetUnfolder]: 499/2553 cut-off events. [2022-09-16 11:44:29,463 INFO L131 PetriNetUnfolder]: For 484/746 co-relation queries the response was YES. [2022-09-16 11:44:29,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3594 conditions, 2553 events. 499/2553 cut-off events. For 484/746 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 25777 event pairs, 192 based on Foata normal form. 0/1987 useless extension candidates. Maximal degree in co-relation 3511. Up to 446 conditions per place. [2022-09-16 11:44:29,485 INFO L137 encePairwiseOnDemand]: 345/351 looper letters, 35 selfloop transitions, 4 changer transitions 0/322 dead transitions. [2022-09-16 11:44:29,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 322 transitions, 789 flow [2022-09-16 11:44:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1293 transitions. [2022-09-16 11:44:29,487 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9209401709401709 [2022-09-16 11:44:29,487 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1293 transitions. [2022-09-16 11:44:29,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1293 transitions. [2022-09-16 11:44:29,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:29,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1293 transitions. [2022-09-16 11:44:29,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 323.25) internal successors, (1293), 4 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,492 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,492 INFO L175 Difference]: Start difference. First operand has 309 places, 310 transitions, 683 flow. Second operand 4 states and 1293 transitions. [2022-09-16 11:44:29,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 322 transitions, 789 flow [2022-09-16 11:44:29,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 322 transitions, 780 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:44:29,496 INFO L231 Difference]: Finished difference. Result has 310 places, 311 transitions, 698 flow [2022-09-16 11:44:29,497 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=310, PETRI_TRANSITIONS=311} [2022-09-16 11:44:29,497 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 11 predicate places. [2022-09-16 11:44:29,497 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 311 transitions, 698 flow [2022-09-16 11:44:29,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.25) internal successors, (1261), 4 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:29,498 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 11:44:29,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:44:29,498 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:29,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:29,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1635968049, now seen corresponding path program 1 times [2022-09-16 11:44:29,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:29,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59683657] [2022-09-16 11:44:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:29,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:29,534 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 11:44:29,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:29,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59683657] [2022-09-16 11:44:29,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59683657] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:29,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:29,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:29,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307053366] [2022-09-16 11:44:29,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:29,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:29,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:29,537 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 351 [2022-09-16 11:44:29,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 311 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 315.5) internal successors, (1262), 4 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:29,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 351 [2022-09-16 11:44:29,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:29,865 INFO L130 PetriNetUnfolder]: 177/1443 cut-off events. [2022-09-16 11:44:29,865 INFO L131 PetriNetUnfolder]: For 207/651 co-relation queries the response was YES. [2022-09-16 11:44:29,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1961 conditions, 1443 events. 177/1443 cut-off events. For 207/651 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11516 event pairs, 60 based on Foata normal form. 6/1229 useless extension candidates. Maximal degree in co-relation 1776. Up to 148 conditions per place. [2022-09-16 11:44:29,908 INFO L137 encePairwiseOnDemand]: 347/351 looper letters, 36 selfloop transitions, 3 changer transitions 0/322 dead transitions. [2022-09-16 11:44:29,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 322 transitions, 801 flow [2022-09-16 11:44:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1292 transitions. [2022-09-16 11:44:29,926 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9202279202279202 [2022-09-16 11:44:29,926 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1292 transitions. [2022-09-16 11:44:29,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1292 transitions. [2022-09-16 11:44:29,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:29,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1292 transitions. [2022-09-16 11:44:29,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,930 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,930 INFO L175 Difference]: Start difference. First operand has 310 places, 311 transitions, 698 flow. Second operand 4 states and 1292 transitions. [2022-09-16 11:44:29,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 322 transitions, 801 flow [2022-09-16 11:44:29,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 322 transitions, 799 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:29,935 INFO L231 Difference]: Finished difference. Result has 312 places, 310 transitions, 696 flow [2022-09-16 11:44:29,952 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=696, PETRI_PLACES=312, PETRI_TRANSITIONS=310} [2022-09-16 11:44:29,953 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 13 predicate places. [2022-09-16 11:44:29,953 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 310 transitions, 696 flow [2022-09-16 11:44:29,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.5) internal successors, (1262), 4 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:29,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:29,953 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 11:44:29,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:44:29,954 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:29,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash 757792534, now seen corresponding path program 1 times [2022-09-16 11:44:29,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:29,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603017746] [2022-09-16 11:44:29,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:29,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:30,027 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 11:44:30,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:30,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603017746] [2022-09-16 11:44:30,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603017746] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:30,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:30,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:30,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517421083] [2022-09-16 11:44:30,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:30,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:30,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:30,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:30,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:30,030 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 351 [2022-09-16 11:44:30,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 310 transitions, 696 flow. Second operand has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:30,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:30,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 351 [2022-09-16 11:44:30,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:30,337 INFO L130 PetriNetUnfolder]: 210/1368 cut-off events. [2022-09-16 11:44:30,337 INFO L131 PetriNetUnfolder]: For 53/201 co-relation queries the response was YES. [2022-09-16 11:44:30,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 1368 events. 210/1368 cut-off events. For 53/201 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10303 event pairs, 2 based on Foata normal form. 8/1271 useless extension candidates. Maximal degree in co-relation 2003. Up to 198 conditions per place. [2022-09-16 11:44:30,359 INFO L137 encePairwiseOnDemand]: 341/351 looper letters, 40 selfloop transitions, 9 changer transitions 0/326 dead transitions. [2022-09-16 11:44:30,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 326 transitions, 840 flow [2022-09-16 11:44:30,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:44:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:44:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2490 transitions. [2022-09-16 11:44:30,363 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8867521367521367 [2022-09-16 11:44:30,363 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2490 transitions. [2022-09-16 11:44:30,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2490 transitions. [2022-09-16 11:44:30,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:30,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2490 transitions. [2022-09-16 11:44:30,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 311.25) internal successors, (2490), 8 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:30,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:30,370 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:30,371 INFO L175 Difference]: Start difference. First operand has 312 places, 310 transitions, 696 flow. Second operand 8 states and 2490 transitions. [2022-09-16 11:44:30,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 326 transitions, 840 flow [2022-09-16 11:44:30,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 326 transitions, 835 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:30,375 INFO L231 Difference]: Finished difference. Result has 319 places, 311 transitions, 721 flow [2022-09-16 11:44:30,376 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=721, PETRI_PLACES=319, PETRI_TRANSITIONS=311} [2022-09-16 11:44:30,377 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 20 predicate places. [2022-09-16 11:44:30,377 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 311 transitions, 721 flow [2022-09-16 11:44:30,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:30,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:30,378 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 11:44:30,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:44:30,378 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:30,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:30,378 INFO L85 PathProgramCache]: Analyzing trace with hash 824599038, now seen corresponding path program 1 times [2022-09-16 11:44:30,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:30,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482863900] [2022-09-16 11:44:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:30,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:30,418 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 11:44:30,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:30,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482863900] [2022-09-16 11:44:30,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482863900] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:30,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:30,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:30,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076508011] [2022-09-16 11:44:30,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:30,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:30,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:30,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:30,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:30,421 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 351 [2022-09-16 11:44:30,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 311 transitions, 721 flow. Second operand has 6 states, 6 states have (on average 312.3333333333333) internal successors, (1874), 6 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:30,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:30,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 351 [2022-09-16 11:44:30,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:30,823 INFO L130 PetriNetUnfolder]: 364/2455 cut-off events. [2022-09-16 11:44:30,824 INFO L131 PetriNetUnfolder]: For 268/340 co-relation queries the response was YES. [2022-09-16 11:44:30,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3363 conditions, 2455 events. 364/2455 cut-off events. For 268/340 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22039 event pairs, 8 based on Foata normal form. 0/2113 useless extension candidates. Maximal degree in co-relation 3053. Up to 535 conditions per place. [2022-09-16 11:44:30,857 INFO L137 encePairwiseOnDemand]: 345/351 looper letters, 30 selfloop transitions, 5 changer transitions 0/317 dead transitions. [2022-09-16 11:44:30,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 317 transitions, 810 flow [2022-09-16 11:44:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:44:30,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:44:30,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1896 transitions. [2022-09-16 11:44:30,860 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9002849002849003 [2022-09-16 11:44:30,861 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1896 transitions. [2022-09-16 11:44:30,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1896 transitions. [2022-09-16 11:44:30,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:30,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1896 transitions. [2022-09-16 11:44:30,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:30,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:30,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:30,866 INFO L175 Difference]: Start difference. First operand has 319 places, 311 transitions, 721 flow. Second operand 6 states and 1896 transitions. [2022-09-16 11:44:30,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 317 transitions, 810 flow [2022-09-16 11:44:30,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 317 transitions, 801 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:44:30,871 INFO L231 Difference]: Finished difference. Result has 319 places, 310 transitions, 720 flow [2022-09-16 11:44:30,871 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=720, PETRI_PLACES=319, PETRI_TRANSITIONS=310} [2022-09-16 11:44:30,871 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 20 predicate places. [2022-09-16 11:44:30,872 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 310 transitions, 720 flow [2022-09-16 11:44:30,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 312.3333333333333) internal successors, (1874), 6 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:30,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:30,872 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] [2022-09-16 11:44:30,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:44:30,872 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:30,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2016733009, now seen corresponding path program 1 times [2022-09-16 11:44:30,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:30,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438894280] [2022-09-16 11:44:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:30,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:30,922 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 11:44:30,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:30,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438894280] [2022-09-16 11:44:30,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438894280] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:30,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:30,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:30,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285173320] [2022-09-16 11:44:30,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:30,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:30,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:30,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:30,925 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 351 [2022-09-16 11:44:30,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 310 transitions, 720 flow. Second operand has 8 states, 8 states have (on average 307.125) internal successors, (2457), 8 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:30,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:30,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 351 [2022-09-16 11:44:30,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:31,216 INFO L130 PetriNetUnfolder]: 180/1327 cut-off events. [2022-09-16 11:44:31,216 INFO L131 PetriNetUnfolder]: For 153/277 co-relation queries the response was YES. [2022-09-16 11:44:31,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2090 conditions, 1327 events. 180/1327 cut-off events. For 153/277 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9912 event pairs, 2 based on Foata normal form. 8/1246 useless extension candidates. Maximal degree in co-relation 2007. Up to 178 conditions per place. [2022-09-16 11:44:31,250 INFO L137 encePairwiseOnDemand]: 341/351 looper letters, 43 selfloop transitions, 9 changer transitions 0/328 dead transitions. [2022-09-16 11:44:31,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 328 transitions, 889 flow [2022-09-16 11:44:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:44:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:44:31,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2492 transitions. [2022-09-16 11:44:31,254 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8874643874643875 [2022-09-16 11:44:31,254 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2492 transitions. [2022-09-16 11:44:31,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2492 transitions. [2022-09-16 11:44:31,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:31,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2492 transitions. [2022-09-16 11:44:31,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 311.5) internal successors, (2492), 8 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:31,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:31,292 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:31,292 INFO L175 Difference]: Start difference. First operand has 319 places, 310 transitions, 720 flow. Second operand 8 states and 2492 transitions. [2022-09-16 11:44:31,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 328 transitions, 889 flow [2022-09-16 11:44:31,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 328 transitions, 872 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:44:31,297 INFO L231 Difference]: Finished difference. Result has 324 places, 311 transitions, 741 flow [2022-09-16 11:44:31,298 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=741, PETRI_PLACES=324, PETRI_TRANSITIONS=311} [2022-09-16 11:44:31,298 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 25 predicate places. [2022-09-16 11:44:31,298 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 311 transitions, 741 flow [2022-09-16 11:44:31,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 307.125) internal successors, (2457), 8 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:31,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:31,299 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] [2022-09-16 11:44:31,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:44:31,299 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:31,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:31,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1057400286, now seen corresponding path program 1 times [2022-09-16 11:44:31,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:31,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313730546] [2022-09-16 11:44:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:31,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:31,324 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 11:44:31,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:31,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313730546] [2022-09-16 11:44:31,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313730546] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:31,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:31,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:31,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573163056] [2022-09-16 11:44:31,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:31,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:31,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:31,326 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 351 [2022-09-16 11:44:31,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 311 transitions, 741 flow. Second operand has 4 states, 4 states have (on average 315.75) internal successors, (1263), 4 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:31,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:31,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 351 [2022-09-16 11:44:31,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:31,757 INFO L130 PetriNetUnfolder]: 211/1659 cut-off events. [2022-09-16 11:44:31,757 INFO L131 PetriNetUnfolder]: For 197/761 co-relation queries the response was YES. [2022-09-16 11:44:31,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2310 conditions, 1659 events. 211/1659 cut-off events. For 197/761 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13867 event pairs, 90 based on Foata normal form. 6/1415 useless extension candidates. Maximal degree in co-relation 2121. Up to 218 conditions per place. [2022-09-16 11:44:31,796 INFO L137 encePairwiseOnDemand]: 347/351 looper letters, 33 selfloop transitions, 3 changer transitions 0/322 dead transitions. [2022-09-16 11:44:31,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 322 transitions, 840 flow [2022-09-16 11:44:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1289 transitions. [2022-09-16 11:44:31,798 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9180911680911681 [2022-09-16 11:44:31,798 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1289 transitions. [2022-09-16 11:44:31,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1289 transitions. [2022-09-16 11:44:31,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:31,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1289 transitions. [2022-09-16 11:44:31,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 322.25) internal successors, (1289), 4 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:31,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:31,803 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:31,803 INFO L175 Difference]: Start difference. First operand has 324 places, 311 transitions, 741 flow. Second operand 4 states and 1289 transitions. [2022-09-16 11:44:31,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 322 transitions, 840 flow [2022-09-16 11:44:31,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 322 transitions, 829 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:44:31,808 INFO L231 Difference]: Finished difference. Result has 322 places, 311 transitions, 739 flow [2022-09-16 11:44:31,808 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=739, PETRI_PLACES=322, PETRI_TRANSITIONS=311} [2022-09-16 11:44:31,809 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 23 predicate places. [2022-09-16 11:44:31,809 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 311 transitions, 739 flow [2022-09-16 11:44:31,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.75) internal successors, (1263), 4 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:31,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:31,809 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] [2022-09-16 11:44:31,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:44:31,810 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:31,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:31,810 INFO L85 PathProgramCache]: Analyzing trace with hash 823148533, now seen corresponding path program 1 times [2022-09-16 11:44:31,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:31,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828233355] [2022-09-16 11:44:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:31,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:31,868 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 11:44:31,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:31,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828233355] [2022-09-16 11:44:31,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828233355] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:31,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:31,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:31,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988989455] [2022-09-16 11:44:31,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:31,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:31,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:31,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:31,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:31,871 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 351 [2022-09-16 11:44:31,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 311 transitions, 739 flow. Second operand has 6 states, 6 states have (on average 306.3333333333333) internal successors, (1838), 6 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:31,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:31,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 351 [2022-09-16 11:44:31,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:32,182 INFO L130 PetriNetUnfolder]: 137/1222 cut-off events. [2022-09-16 11:44:32,183 INFO L131 PetriNetUnfolder]: For 94/100 co-relation queries the response was YES. [2022-09-16 11:44:32,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 1222 events. 137/1222 cut-off events. For 94/100 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9009 event pairs, 58 based on Foata normal form. 3/1123 useless extension candidates. Maximal degree in co-relation 1749. Up to 154 conditions per place. [2022-09-16 11:44:32,219 INFO L137 encePairwiseOnDemand]: 343/351 looper letters, 46 selfloop transitions, 7 changer transitions 0/327 dead transitions. [2022-09-16 11:44:32,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 327 transitions, 892 flow [2022-09-16 11:44:32,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:32,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:32,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2174 transitions. [2022-09-16 11:44:32,223 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8848188848188848 [2022-09-16 11:44:32,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2174 transitions. [2022-09-16 11:44:32,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2174 transitions. [2022-09-16 11:44:32,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:32,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2174 transitions. [2022-09-16 11:44:32,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 310.57142857142856) internal successors, (2174), 7 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:32,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:32,230 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:32,230 INFO L175 Difference]: Start difference. First operand has 322 places, 311 transitions, 739 flow. Second operand 7 states and 2174 transitions. [2022-09-16 11:44:32,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 327 transitions, 892 flow [2022-09-16 11:44:32,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 327 transitions, 888 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:32,236 INFO L231 Difference]: Finished difference. Result has 329 places, 314 transitions, 771 flow [2022-09-16 11:44:32,236 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=771, PETRI_PLACES=329, PETRI_TRANSITIONS=314} [2022-09-16 11:44:32,236 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 30 predicate places. [2022-09-16 11:44:32,237 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 314 transitions, 771 flow [2022-09-16 11:44:32,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.3333333333333) internal successors, (1838), 6 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:32,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:32,237 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] [2022-09-16 11:44:32,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:44:32,237 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:32,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:32,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1471904252, now seen corresponding path program 1 times [2022-09-16 11:44:32,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:32,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958938690] [2022-09-16 11:44:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:32,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:32,311 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 11:44:32,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:32,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958938690] [2022-09-16 11:44:32,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958938690] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:32,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:32,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:32,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962045480] [2022-09-16 11:44:32,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:32,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:32,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:32,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:32,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:32,313 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 351 [2022-09-16 11:44:32,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 314 transitions, 771 flow. Second operand has 6 states, 6 states have (on average 306.5) internal successors, (1839), 6 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:32,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:32,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 351 [2022-09-16 11:44:32,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:32,608 INFO L130 PetriNetUnfolder]: 129/1211 cut-off events. [2022-09-16 11:44:32,609 INFO L131 PetriNetUnfolder]: For 120/126 co-relation queries the response was YES. [2022-09-16 11:44:32,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1920 conditions, 1211 events. 129/1211 cut-off events. For 120/126 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8888 event pairs, 48 based on Foata normal form. 3/1126 useless extension candidates. Maximal degree in co-relation 1786. Up to 129 conditions per place. [2022-09-16 11:44:32,642 INFO L137 encePairwiseOnDemand]: 343/351 looper letters, 55 selfloop transitions, 8 changer transitions 0/337 dead transitions. [2022-09-16 11:44:32,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 337 transitions, 980 flow [2022-09-16 11:44:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2180 transitions. [2022-09-16 11:44:32,646 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8872608872608873 [2022-09-16 11:44:32,646 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2180 transitions. [2022-09-16 11:44:32,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2180 transitions. [2022-09-16 11:44:32,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:32,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2180 transitions. [2022-09-16 11:44:32,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 311.42857142857144) internal successors, (2180), 7 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:32,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:32,653 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:32,653 INFO L175 Difference]: Start difference. First operand has 329 places, 314 transitions, 771 flow. Second operand 7 states and 2180 transitions. [2022-09-16 11:44:32,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 337 transitions, 980 flow [2022-09-16 11:44:32,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 337 transitions, 978 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:32,658 INFO L231 Difference]: Finished difference. Result has 337 places, 318 transitions, 818 flow [2022-09-16 11:44:32,658 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=818, PETRI_PLACES=337, PETRI_TRANSITIONS=318} [2022-09-16 11:44:32,659 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 38 predicate places. [2022-09-16 11:44:32,659 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 318 transitions, 818 flow [2022-09-16 11:44:32,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.5) internal successors, (1839), 6 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:32,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:32,659 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] [2022-09-16 11:44:32,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:44:32,660 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:32,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1869122373, now seen corresponding path program 1 times [2022-09-16 11:44:32,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:32,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854753417] [2022-09-16 11:44:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:32,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:32,683 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 11:44:32,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:32,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854753417] [2022-09-16 11:44:32,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854753417] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:32,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:32,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289223623] [2022-09-16 11:44:32,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:32,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:32,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:32,686 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 351 [2022-09-16 11:44:32,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 318 transitions, 818 flow. Second operand has 4 states, 4 states have (on average 315.75) internal successors, (1263), 4 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:32,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:32,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 351 [2022-09-16 11:44:32,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:33,183 INFO L130 PetriNetUnfolder]: 596/3068 cut-off events. [2022-09-16 11:44:33,183 INFO L131 PetriNetUnfolder]: For 828/1216 co-relation queries the response was YES. [2022-09-16 11:44:33,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4604 conditions, 3068 events. 596/3068 cut-off events. For 828/1216 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 33422 event pairs, 240 based on Foata normal form. 21/2411 useless extension candidates. Maximal degree in co-relation 4512. Up to 516 conditions per place. [2022-09-16 11:44:33,232 INFO L137 encePairwiseOnDemand]: 347/351 looper letters, 35 selfloop transitions, 3 changer transitions 0/328 dead transitions. [2022-09-16 11:44:33,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 328 transitions, 914 flow [2022-09-16 11:44:33,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1291 transitions. [2022-09-16 11:44:33,235 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9195156695156695 [2022-09-16 11:44:33,235 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1291 transitions. [2022-09-16 11:44:33,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1291 transitions. [2022-09-16 11:44:33,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:33,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1291 transitions. [2022-09-16 11:44:33,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 322.75) internal successors, (1291), 4 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:33,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:33,239 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:33,239 INFO L175 Difference]: Start difference. First operand has 337 places, 318 transitions, 818 flow. Second operand 4 states and 1291 transitions. [2022-09-16 11:44:33,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 328 transitions, 914 flow [2022-09-16 11:44:33,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 328 transitions, 912 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:33,245 INFO L231 Difference]: Finished difference. Result has 339 places, 317 transitions, 816 flow [2022-09-16 11:44:33,245 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=816, PETRI_PLACES=339, PETRI_TRANSITIONS=317} [2022-09-16 11:44:33,245 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 40 predicate places. [2022-09-16 11:44:33,245 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 317 transitions, 816 flow [2022-09-16 11:44:33,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.75) internal successors, (1263), 4 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:33,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:33,246 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] [2022-09-16 11:44:33,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:44:33,246 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash 364342627, now seen corresponding path program 1 times [2022-09-16 11:44:33,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:33,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078853116] [2022-09-16 11:44:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:33,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:33,299 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 11:44:33,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:33,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078853116] [2022-09-16 11:44:33,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078853116] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:33,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:33,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:33,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209774664] [2022-09-16 11:44:33,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:33,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:33,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:33,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:33,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:33,301 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 351 [2022-09-16 11:44:33,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 317 transitions, 816 flow. Second operand has 8 states, 8 states have (on average 307.125) internal successors, (2457), 8 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:33,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:33,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 351 [2022-09-16 11:44:33,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:33,846 INFO L130 PetriNetUnfolder]: 317/1905 cut-off events. [2022-09-16 11:44:33,846 INFO L131 PetriNetUnfolder]: For 236/350 co-relation queries the response was YES. [2022-09-16 11:44:33,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2945 conditions, 1905 events. 317/1905 cut-off events. For 236/350 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16533 event pairs, 2 based on Foata normal form. 0/1697 useless extension candidates. Maximal degree in co-relation 2812. Up to 300 conditions per place. [2022-09-16 11:44:33,896 INFO L137 encePairwiseOnDemand]: 341/351 looper letters, 39 selfloop transitions, 9 changer transitions 0/332 dead transitions. [2022-09-16 11:44:33,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 332 transitions, 955 flow [2022-09-16 11:44:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:44:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:44:33,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2489 transitions. [2022-09-16 11:44:33,900 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8863960113960114 [2022-09-16 11:44:33,900 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2489 transitions. [2022-09-16 11:44:33,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2489 transitions. [2022-09-16 11:44:33,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:33,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2489 transitions. [2022-09-16 11:44:33,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 311.125) internal successors, (2489), 8 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:33,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:33,907 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:33,907 INFO L175 Difference]: Start difference. First operand has 339 places, 317 transitions, 816 flow. Second operand 8 states and 2489 transitions. [2022-09-16 11:44:33,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 332 transitions, 955 flow [2022-09-16 11:44:33,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 332 transitions, 950 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:33,912 INFO L231 Difference]: Finished difference. Result has 346 places, 318 transitions, 841 flow [2022-09-16 11:44:33,912 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=841, PETRI_PLACES=346, PETRI_TRANSITIONS=318} [2022-09-16 11:44:33,913 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 47 predicate places. [2022-09-16 11:44:33,913 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 318 transitions, 841 flow [2022-09-16 11:44:33,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 307.125) internal successors, (2457), 8 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:33,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:33,914 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] [2022-09-16 11:44:33,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:44:33,914 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:33,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:33,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2108219802, now seen corresponding path program 1 times [2022-09-16 11:44:33,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:33,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514936169] [2022-09-16 11:44:33,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:33,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:33,949 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 11:44:33,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:33,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514936169] [2022-09-16 11:44:33,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514936169] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:33,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:33,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:33,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625964524] [2022-09-16 11:44:33,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:33,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:33,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:33,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:33,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:33,951 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 351 [2022-09-16 11:44:33,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 318 transitions, 841 flow. Second operand has 6 states, 6 states have (on average 312.5) internal successors, (1875), 6 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:33,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:33,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 351 [2022-09-16 11:44:33,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:34,540 INFO L130 PetriNetUnfolder]: 689/3688 cut-off events. [2022-09-16 11:44:34,540 INFO L131 PetriNetUnfolder]: For 780/994 co-relation queries the response was YES. [2022-09-16 11:44:34,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5493 conditions, 3688 events. 689/3688 cut-off events. For 780/994 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 38465 event pairs, 5 based on Foata normal form. 0/3084 useless extension candidates. Maximal degree in co-relation 4228. Up to 1126 conditions per place. [2022-09-16 11:44:34,579 INFO L137 encePairwiseOnDemand]: 345/351 looper letters, 29 selfloop transitions, 5 changer transitions 0/323 dead transitions. [2022-09-16 11:44:34,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 323 transitions, 927 flow [2022-09-16 11:44:34,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:44:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:44:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1895 transitions. [2022-09-16 11:44:34,581 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8998100664767331 [2022-09-16 11:44:34,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1895 transitions. [2022-09-16 11:44:34,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1895 transitions. [2022-09-16 11:44:34,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:34,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1895 transitions. [2022-09-16 11:44:34,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 315.8333333333333) internal successors, (1895), 6 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:34,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:34,586 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:34,586 INFO L175 Difference]: Start difference. First operand has 346 places, 318 transitions, 841 flow. Second operand 6 states and 1895 transitions. [2022-09-16 11:44:34,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 323 transitions, 927 flow [2022-09-16 11:44:34,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 323 transitions, 914 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:44:34,591 INFO L231 Difference]: Finished difference. Result has 346 places, 317 transitions, 840 flow [2022-09-16 11:44:34,592 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=840, PETRI_PLACES=346, PETRI_TRANSITIONS=317} [2022-09-16 11:44:34,592 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 47 predicate places. [2022-09-16 11:44:34,592 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 317 transitions, 840 flow [2022-09-16 11:44:34,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 312.5) internal successors, (1875), 6 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:34,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:34,593 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] [2022-09-16 11:44:34,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:44:34,593 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1590279434, now seen corresponding path program 1 times [2022-09-16 11:44:34,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:34,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099280717] [2022-09-16 11:44:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:34,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:34,645 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 11:44:34,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:34,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099280717] [2022-09-16 11:44:34,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099280717] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:34,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:34,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:34,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168083540] [2022-09-16 11:44:34,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:34,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:34,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:34,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:34,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:34,648 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 351 [2022-09-16 11:44:34,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 317 transitions, 840 flow. Second operand has 8 states, 8 states have (on average 307.25) internal successors, (2458), 8 states have internal predecessors, (2458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:34,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:34,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 351 [2022-09-16 11:44:34,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:35,066 INFO L130 PetriNetUnfolder]: 269/1839 cut-off events. [2022-09-16 11:44:35,066 INFO L131 PetriNetUnfolder]: For 266/362 co-relation queries the response was YES. [2022-09-16 11:44:35,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 1839 events. 269/1839 cut-off events. For 266/362 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15374 event pairs, 2 based on Foata normal form. 0/1672 useless extension candidates. Maximal degree in co-relation 2737. Up to 268 conditions per place. [2022-09-16 11:44:35,123 INFO L137 encePairwiseOnDemand]: 341/351 looper letters, 42 selfloop transitions, 9 changer transitions 0/334 dead transitions. [2022-09-16 11:44:35,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 334 transitions, 996 flow [2022-09-16 11:44:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:44:35,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:44:35,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2491 transitions. [2022-09-16 11:44:35,126 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8871082621082621 [2022-09-16 11:44:35,126 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2491 transitions. [2022-09-16 11:44:35,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2491 transitions. [2022-09-16 11:44:35,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:35,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2491 transitions. [2022-09-16 11:44:35,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 311.375) internal successors, (2491), 8 states have internal predecessors, (2491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:35,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:35,132 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:35,132 INFO L175 Difference]: Start difference. First operand has 346 places, 317 transitions, 840 flow. Second operand 8 states and 2491 transitions. [2022-09-16 11:44:35,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 334 transitions, 996 flow [2022-09-16 11:44:35,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 334 transitions, 987 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:44:35,137 INFO L231 Difference]: Finished difference. Result has 351 places, 318 transitions, 861 flow [2022-09-16 11:44:35,138 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=861, PETRI_PLACES=351, PETRI_TRANSITIONS=318} [2022-09-16 11:44:35,138 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 52 predicate places. [2022-09-16 11:44:35,138 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 318 transitions, 861 flow [2022-09-16 11:44:35,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 307.25) internal successors, (2458), 8 states have internal predecessors, (2458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:35,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:35,139 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 11:44:35,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:44:35,139 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:35,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:35,139 INFO L85 PathProgramCache]: Analyzing trace with hash -153457410, now seen corresponding path program 1 times [2022-09-16 11:44:35,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:35,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259058954] [2022-09-16 11:44:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:35,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:35,162 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 11:44:35,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:35,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259058954] [2022-09-16 11:44:35,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259058954] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:35,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:35,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:35,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178872975] [2022-09-16 11:44:35,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:35,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:35,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:35,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:35,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:35,164 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 351 [2022-09-16 11:44:35,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 318 transitions, 861 flow. Second operand has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:35,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:35,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 351 [2022-09-16 11:44:35,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:35,846 INFO L130 PetriNetUnfolder]: 735/3812 cut-off events. [2022-09-16 11:44:35,846 INFO L131 PetriNetUnfolder]: For 807/1265 co-relation queries the response was YES. [2022-09-16 11:44:35,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5686 conditions, 3812 events. 735/3812 cut-off events. For 807/1265 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 44371 event pairs, 360 based on Foata normal form. 21/2999 useless extension candidates. Maximal degree in co-relation 5587. Up to 762 conditions per place. [2022-09-16 11:44:35,914 INFO L137 encePairwiseOnDemand]: 347/351 looper letters, 32 selfloop transitions, 3 changer transitions 0/328 dead transitions. [2022-09-16 11:44:35,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 328 transitions, 953 flow [2022-09-16 11:44:35,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1288 transitions. [2022-09-16 11:44:35,915 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9173789173789174 [2022-09-16 11:44:35,916 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1288 transitions. [2022-09-16 11:44:35,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1288 transitions. [2022-09-16 11:44:35,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:35,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1288 transitions. [2022-09-16 11:44:35,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:35,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:35,919 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:35,919 INFO L175 Difference]: Start difference. First operand has 351 places, 318 transitions, 861 flow. Second operand 4 states and 1288 transitions. [2022-09-16 11:44:35,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 328 transitions, 953 flow [2022-09-16 11:44:35,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 328 transitions, 942 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:44:35,924 INFO L231 Difference]: Finished difference. Result has 349 places, 318 transitions, 859 flow [2022-09-16 11:44:35,925 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=859, PETRI_PLACES=349, PETRI_TRANSITIONS=318} [2022-09-16 11:44:35,925 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 50 predicate places. [2022-09-16 11:44:35,925 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 318 transitions, 859 flow [2022-09-16 11:44:35,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:35,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:35,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:35,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:44:35,926 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:35,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash 522801306, now seen corresponding path program 1 times [2022-09-16 11:44:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:35,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987380031] [2022-09-16 11:44:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:35,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:35,980 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 11:44:35,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:35,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987380031] [2022-09-16 11:44:35,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987380031] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:35,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:35,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:35,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742142768] [2022-09-16 11:44:35,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:35,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:35,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:35,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:35,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:35,983 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 351 [2022-09-16 11:44:35,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 318 transitions, 859 flow. Second operand has 6 states, 6 states have (on average 306.5) internal successors, (1839), 6 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:35,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:35,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 351 [2022-09-16 11:44:35,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:36,534 INFO L130 PetriNetUnfolder]: 290/1632 cut-off events. [2022-09-16 11:44:36,534 INFO L131 PetriNetUnfolder]: For 398/899 co-relation queries the response was YES. [2022-09-16 11:44:36,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2758 conditions, 1632 events. 290/1632 cut-off events. For 398/899 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 14765 event pairs, 145 based on Foata normal form. 6/1412 useless extension candidates. Maximal degree in co-relation 2556. Up to 331 conditions per place. [2022-09-16 11:44:36,603 INFO L137 encePairwiseOnDemand]: 343/351 looper letters, 45 selfloop transitions, 7 changer transitions 0/333 dead transitions. [2022-09-16 11:44:36,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 333 transitions, 1007 flow [2022-09-16 11:44:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2173 transitions. [2022-09-16 11:44:36,605 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8844118844118845 [2022-09-16 11:44:36,605 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2173 transitions. [2022-09-16 11:44:36,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2173 transitions. [2022-09-16 11:44:36,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:36,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2173 transitions. [2022-09-16 11:44:36,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 310.42857142857144) internal successors, (2173), 7 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:36,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:36,610 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:36,610 INFO L175 Difference]: Start difference. First operand has 349 places, 318 transitions, 859 flow. Second operand 7 states and 2173 transitions. [2022-09-16 11:44:36,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 333 transitions, 1007 flow [2022-09-16 11:44:36,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 333 transitions, 1003 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:36,616 INFO L231 Difference]: Finished difference. Result has 356 places, 321 transitions, 891 flow [2022-09-16 11:44:36,616 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=891, PETRI_PLACES=356, PETRI_TRANSITIONS=321} [2022-09-16 11:44:36,617 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 57 predicate places. [2022-09-16 11:44:36,617 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 321 transitions, 891 flow [2022-09-16 11:44:36,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.5) internal successors, (1839), 6 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:36,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:36,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:36,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:44:36,617 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:36,618 INFO L85 PathProgramCache]: Analyzing trace with hash 751074889, now seen corresponding path program 1 times [2022-09-16 11:44:36,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:36,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979135518] [2022-09-16 11:44:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:36,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:36,660 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 11:44:36,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:36,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979135518] [2022-09-16 11:44:36,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979135518] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:36,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:36,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:36,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235762639] [2022-09-16 11:44:36,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:36,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:36,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:36,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:36,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:36,662 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 351 [2022-09-16 11:44:36,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 321 transitions, 891 flow. Second operand has 6 states, 6 states have (on average 306.6666666666667) internal successors, (1840), 6 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:36,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:36,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 351 [2022-09-16 11:44:36,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:37,136 INFO L130 PetriNetUnfolder]: 270/1606 cut-off events. [2022-09-16 11:44:37,137 INFO L131 PetriNetUnfolder]: For 438/903 co-relation queries the response was YES. [2022-09-16 11:44:37,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2846 conditions, 1606 events. 270/1606 cut-off events. For 438/903 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 14187 event pairs, 120 based on Foata normal form. 6/1428 useless extension candidates. Maximal degree in co-relation 2644. Up to 276 conditions per place. [2022-09-16 11:44:37,195 INFO L137 encePairwiseOnDemand]: 343/351 looper letters, 54 selfloop transitions, 8 changer transitions 0/343 dead transitions. [2022-09-16 11:44:37,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 343 transitions, 1095 flow [2022-09-16 11:44:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2179 transitions. [2022-09-16 11:44:37,197 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8868538868538869 [2022-09-16 11:44:37,197 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2179 transitions. [2022-09-16 11:44:37,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2179 transitions. [2022-09-16 11:44:37,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:37,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2179 transitions. [2022-09-16 11:44:37,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 311.2857142857143) internal successors, (2179), 7 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:37,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:37,201 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:37,201 INFO L175 Difference]: Start difference. First operand has 356 places, 321 transitions, 891 flow. Second operand 7 states and 2179 transitions. [2022-09-16 11:44:37,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 343 transitions, 1095 flow [2022-09-16 11:44:37,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 343 transitions, 1093 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:37,207 INFO L231 Difference]: Finished difference. Result has 364 places, 325 transitions, 938 flow [2022-09-16 11:44:37,208 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=938, PETRI_PLACES=364, PETRI_TRANSITIONS=325} [2022-09-16 11:44:37,208 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 65 predicate places. [2022-09-16 11:44:37,208 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 325 transitions, 938 flow [2022-09-16 11:44:37,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.6666666666667) internal successors, (1840), 6 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:37,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:37,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:37,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 11:44:37,209 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:37,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:37,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2097297087, now seen corresponding path program 1 times [2022-09-16 11:44:37,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:37,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635169129] [2022-09-16 11:44:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:37,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:37,256 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 11:44:37,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:37,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635169129] [2022-09-16 11:44:37,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635169129] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:37,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:37,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:37,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014922570] [2022-09-16 11:44:37,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:37,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:37,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:37,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:37,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:37,258 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 351 [2022-09-16 11:44:37,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 325 transitions, 938 flow. Second operand has 8 states, 8 states have (on average 307.25) internal successors, (2458), 8 states have internal predecessors, (2458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:37,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:37,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 351 [2022-09-16 11:44:37,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:38,005 INFO L130 PetriNetUnfolder]: 783/4153 cut-off events. [2022-09-16 11:44:38,005 INFO L131 PetriNetUnfolder]: For 934/1054 co-relation queries the response was YES. [2022-09-16 11:44:38,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6441 conditions, 4153 events. 783/4153 cut-off events. For 934/1054 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 47740 event pairs, 2 based on Foata normal form. 0/3412 useless extension candidates. Maximal degree in co-relation 4489. Up to 774 conditions per place. [2022-09-16 11:44:38,086 INFO L137 encePairwiseOnDemand]: 341/351 looper letters, 38 selfloop transitions, 9 changer transitions 0/339 dead transitions. [2022-09-16 11:44:38,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 339 transitions, 1068 flow [2022-09-16 11:44:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:44:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:44:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2488 transitions. [2022-09-16 11:44:38,088 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.886039886039886 [2022-09-16 11:44:38,088 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2488 transitions. [2022-09-16 11:44:38,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2488 transitions. [2022-09-16 11:44:38,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:38,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2488 transitions. [2022-09-16 11:44:38,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:38,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:38,092 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:38,093 INFO L175 Difference]: Start difference. First operand has 364 places, 325 transitions, 938 flow. Second operand 8 states and 2488 transitions. [2022-09-16 11:44:38,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 339 transitions, 1068 flow [2022-09-16 11:44:38,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 339 transitions, 1068 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:44:38,100 INFO L231 Difference]: Finished difference. Result has 373 places, 326 transitions, 968 flow [2022-09-16 11:44:38,100 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=968, PETRI_PLACES=373, PETRI_TRANSITIONS=326} [2022-09-16 11:44:38,101 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 74 predicate places. [2022-09-16 11:44:38,101 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 326 transitions, 968 flow [2022-09-16 11:44:38,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 307.25) internal successors, (2458), 8 states have internal predecessors, (2458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:38,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:38,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:38,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-16 11:44:38,102 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:38,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:38,102 INFO L85 PathProgramCache]: Analyzing trace with hash 591701356, now seen corresponding path program 1 times [2022-09-16 11:44:38,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:38,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575489715] [2022-09-16 11:44:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:38,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:38,147 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 11:44:38,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:38,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575489715] [2022-09-16 11:44:38,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575489715] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:38,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:38,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:38,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453405764] [2022-09-16 11:44:38,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:38,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:38,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:38,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:38,150 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 351 [2022-09-16 11:44:38,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 326 transitions, 968 flow. Second operand has 8 states, 8 states have (on average 307.375) internal successors, (2459), 8 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:38,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:38,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 351 [2022-09-16 11:44:38,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:39,014 INFO L130 PetriNetUnfolder]: 657/3983 cut-off events. [2022-09-16 11:44:39,014 INFO L131 PetriNetUnfolder]: For 1014/1116 co-relation queries the response was YES. [2022-09-16 11:44:39,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6327 conditions, 3983 events. 657/3983 cut-off events. For 1014/1116 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 44226 event pairs, 2 based on Foata normal form. 0/3395 useless extension candidates. Maximal degree in co-relation 4405. Up to 688 conditions per place. [2022-09-16 11:44:39,148 INFO L137 encePairwiseOnDemand]: 341/351 looper letters, 41 selfloop transitions, 9 changer transitions 0/342 dead transitions. [2022-09-16 11:44:39,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 342 transitions, 1115 flow [2022-09-16 11:44:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:44:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:44:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2490 transitions. [2022-09-16 11:44:39,161 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8867521367521367 [2022-09-16 11:44:39,161 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2490 transitions. [2022-09-16 11:44:39,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2490 transitions. [2022-09-16 11:44:39,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:39,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2490 transitions. [2022-09-16 11:44:39,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 311.25) internal successors, (2490), 8 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:39,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:39,169 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:39,169 INFO L175 Difference]: Start difference. First operand has 373 places, 326 transitions, 968 flow. Second operand 8 states and 2490 transitions. [2022-09-16 11:44:39,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 342 transitions, 1115 flow [2022-09-16 11:44:39,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 342 transitions, 1106 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:44:39,178 INFO L231 Difference]: Finished difference. Result has 378 places, 327 transitions, 989 flow [2022-09-16 11:44:39,179 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=989, PETRI_PLACES=378, PETRI_TRANSITIONS=327} [2022-09-16 11:44:39,179 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 79 predicate places. [2022-09-16 11:44:39,179 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 327 transitions, 989 flow [2022-09-16 11:44:39,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 307.375) internal successors, (2459), 8 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:39,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:39,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:39,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 11:44:39,180 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1462302672, now seen corresponding path program 1 times [2022-09-16 11:44:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:39,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713140670] [2022-09-16 11:44:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:39,220 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 11:44:39,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:39,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713140670] [2022-09-16 11:44:39,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713140670] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:39,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:39,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:39,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406820421] [2022-09-16 11:44:39,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:39,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:39,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:39,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:39,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:39,222 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 351 [2022-09-16 11:44:39,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 327 transitions, 989 flow. Second operand has 6 states, 6 states have (on average 306.6666666666667) internal successors, (1840), 6 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:39,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:39,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 351 [2022-09-16 11:44:39,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:40,011 INFO L130 PetriNetUnfolder]: 1095/4060 cut-off events. [2022-09-16 11:44:40,012 INFO L131 PetriNetUnfolder]: For 1633/2076 co-relation queries the response was YES. [2022-09-16 11:44:40,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7363 conditions, 4060 events. 1095/4060 cut-off events. For 1633/2076 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 50452 event pairs, 580 based on Foata normal form. 28/3167 useless extension candidates. Maximal degree in co-relation 7253. Up to 1213 conditions per place. [2022-09-16 11:44:40,088 INFO L137 encePairwiseOnDemand]: 343/351 looper letters, 40 selfloop transitions, 7 changer transitions 4/341 dead transitions. [2022-09-16 11:44:40,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 341 transitions, 1127 flow [2022-09-16 11:44:40,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:40,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2172 transitions. [2022-09-16 11:44:40,090 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.884004884004884 [2022-09-16 11:44:40,090 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2172 transitions. [2022-09-16 11:44:40,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2172 transitions. [2022-09-16 11:44:40,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:40,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2172 transitions. [2022-09-16 11:44:40,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 310.2857142857143) internal successors, (2172), 7 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:40,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:40,094 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:40,094 INFO L175 Difference]: Start difference. First operand has 378 places, 327 transitions, 989 flow. Second operand 7 states and 2172 transitions. [2022-09-16 11:44:40,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 341 transitions, 1127 flow [2022-09-16 11:44:40,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 341 transitions, 1116 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:44:40,105 INFO L231 Difference]: Finished difference. Result has 382 places, 330 transitions, 1014 flow [2022-09-16 11:44:40,105 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1014, PETRI_PLACES=382, PETRI_TRANSITIONS=330} [2022-09-16 11:44:40,106 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 83 predicate places. [2022-09-16 11:44:40,106 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 330 transitions, 1014 flow [2022-09-16 11:44:40,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.6666666666667) internal successors, (1840), 6 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:40,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:40,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:40,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-16 11:44:40,107 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:44:40,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash -189153755, now seen corresponding path program 1 times [2022-09-16 11:44:40,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:40,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80864047] [2022-09-16 11:44:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:40,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:40,188 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 11:44:40,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:40,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80864047] [2022-09-16 11:44:40,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80864047] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:40,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:40,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:40,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831887684] [2022-09-16 11:44:40,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:40,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:40,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:40,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:40,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:40,191 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 351 [2022-09-16 11:44:40,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 330 transitions, 1014 flow. Second operand has 6 states, 6 states have (on average 306.8333333333333) internal successors, (1841), 6 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:40,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:40,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 351 [2022-09-16 11:44:40,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:41,182 INFO L130 PetriNetUnfolder]: 1015/3959 cut-off events. [2022-09-16 11:44:41,182 INFO L131 PetriNetUnfolder]: For 1716/2135 co-relation queries the response was YES. [2022-09-16 11:44:41,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7684 conditions, 3959 events. 1015/3959 cut-off events. For 1716/2135 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 48612 event pairs, 480 based on Foata normal form. 21/3231 useless extension candidates. Maximal degree in co-relation 7575. Up to 1008 conditions per place. [2022-09-16 11:44:41,298 INFO L137 encePairwiseOnDemand]: 343/351 looper letters, 0 selfloop transitions, 0 changer transitions 351/351 dead transitions. [2022-09-16 11:44:41,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 351 transitions, 1208 flow [2022-09-16 11:44:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:41,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:41,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2178 transitions. [2022-09-16 11:44:41,301 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8864468864468864 [2022-09-16 11:44:41,301 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2178 transitions. [2022-09-16 11:44:41,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2178 transitions. [2022-09-16 11:44:41,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:41,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2178 transitions. [2022-09-16 11:44:41,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:41,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:41,306 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:41,306 INFO L175 Difference]: Start difference. First operand has 382 places, 330 transitions, 1014 flow. Second operand 7 states and 2178 transitions. [2022-09-16 11:44:41,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 351 transitions, 1208 flow [2022-09-16 11:44:41,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 351 transitions, 1206 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:41,326 INFO L231 Difference]: Finished difference. Result has 386 places, 0 transitions, 0 flow [2022-09-16 11:44:41,326 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=386, PETRI_TRANSITIONS=0} [2022-09-16 11:44:41,327 INFO L287 CegarLoopForPetriNet]: 299 programPoint places, 87 predicate places. [2022-09-16 11:44:41,327 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 0 transitions, 0 flow [2022-09-16 11:44:41,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.8333333333333) internal successors, (1841), 6 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:41,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-09-16 11:44:41,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-09-16 11:44:41,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-09-16 11:44:41,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-09-16 11:44:41,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-09-16 11:44:41,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-09-16 11:44:41,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-09-16 11:44:41,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-09-16 11:44:41,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-09-16 11:44:41,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-09-16 11:44:41,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-09-16 11:44:41,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-09-16 11:44:41,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-09-16 11:44:41,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-09-16 11:44:41,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-09-16 11:44:41,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-09-16 11:44:41,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-09-16 11:44:41,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-09-16 11:44:41,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-09-16 11:44:41,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-09-16 11:44:41,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-09-16 11:44:41,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-09-16 11:44:41,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-09-16 11:44:41,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-09-16 11:44:41,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-09-16 11:44:41,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-09-16 11:44:41,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-09-16 11:44:41,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-09-16 11:44:41,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-09-16 11:44:41,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-09-16 11:44:41,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-09-16 11:44:41,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-09-16 11:44:41,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-09-16 11:44:41,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-09-16 11:44:41,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-09-16 11:44:41,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-09-16 11:44:41,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-09-16 11:44:41,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-09-16 11:44:41,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-09-16 11:44:41,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-16 11:44:41,336 INFO L444 BasicCegarLoop]: Path program 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] [2022-09-16 11:44:41,341 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:44:41,341 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:44:41,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:44:41 BasicIcfg [2022-09-16 11:44:41,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:44:41,346 INFO L158 Benchmark]: Toolchain (without parser) took 17398.93ms. Allocated memory was 206.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 172.6MB in the beginning and 836.4MB in the end (delta: -663.7MB). Peak memory consumption was 460.1MB. Max. memory is 8.0GB. [2022-09-16 11:44:41,346 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 206.6MB. Free memory is still 163.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:44:41,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.88ms. Allocated memory is still 206.6MB. Free memory was 172.5MB in the beginning and 176.7MB in the end (delta: -4.2MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. [2022-09-16 11:44:41,346 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.99ms. Allocated memory is still 206.6MB. Free memory was 176.7MB in the beginning and 174.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:44:41,347 INFO L158 Benchmark]: Boogie Preprocessor took 47.40ms. Allocated memory is still 206.6MB. Free memory was 174.4MB in the beginning and 172.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:44:41,347 INFO L158 Benchmark]: RCFGBuilder took 707.97ms. Allocated memory is still 206.6MB. Free memory was 172.6MB in the beginning and 150.1MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-09-16 11:44:41,347 INFO L158 Benchmark]: TraceAbstraction took 16348.10ms. Allocated memory was 206.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 149.4MB in the beginning and 836.4MB in the end (delta: -687.0MB). Peak memory consumption was 437.2MB. Max. memory is 8.0GB. [2022-09-16 11:44:41,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 206.6MB. Free memory is still 163.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 230.88ms. Allocated memory is still 206.6MB. Free memory was 172.5MB in the beginning and 176.7MB in the end (delta: -4.2MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.99ms. Allocated memory is still 206.6MB. Free memory was 176.7MB in the beginning and 174.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.40ms. Allocated memory is still 206.6MB. Free memory was 174.4MB in the beginning and 172.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 707.97ms. Allocated memory is still 206.6MB. Free memory was 172.6MB in the beginning and 150.1MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 16348.10ms. Allocated memory was 206.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 149.4MB in the beginning and 836.4MB in the end (delta: -687.0MB). Peak memory consumption was 437.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: 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, 542 locations, 39 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: 16.2s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1446 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1446 mSDsluCounter, 726 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 931 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2390 IncrementalHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 369 mSDtfsCounter, 2390 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1014occurred in iteration=26, InterpolantAutomatonStates: 162, 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, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 2229 NumberOfCodeBlocks, 2229 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2202 ConstructedInterpolants, 0 QuantifiedInterpolants, 4737 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 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 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:44:41,380 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...