/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/fibonacci.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:47:35,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:47:35,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:47:35,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:47:35,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:47:35,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:47:35,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:47:35,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:47:35,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:47:35,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:47:35,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:47:35,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:47:35,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:47:35,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:47:35,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:47:35,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:47:35,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:47:35,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:47:35,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:47:35,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:47:35,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:47:35,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:47:35,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:47:35,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:47:35,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:47:35,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:47:35,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:47:35,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:47:35,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:47:35,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:47:35,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:47:35,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:47:35,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:47:35,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:47:35,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:47:35,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:47:35,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:47:35,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:47:35,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:47:35,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:47:35,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:47:35,129 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 11:47:35,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:47:35,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:47:35,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:47:35,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:47:35,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:47:35,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:47:35,160 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:47:35,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:47:35,160 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:47:35,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:47:35,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:47:35,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:47:35,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:47:35,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:47:35,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:47:35,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:47:35,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:47:35,162 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:47:35,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:47:35,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:47:35,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:47:35,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:47:35,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:47:35,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:47:35,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:47:35,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:47:35,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:47:35,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:47:35,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:47:35,164 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:47:35,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:47:35,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:47:35,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:47:35,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:47:35,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:47:35,400 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:47:35,402 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:47:35,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2022-09-16 11:47:35,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9a67d4c3/06db72c6a55c47fa9344d9c142fb12eb/FLAGa6e1e2581 [2022-09-16 11:47:35,842 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:47:35,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2022-09-16 11:47:35,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9a67d4c3/06db72c6a55c47fa9344d9c142fb12eb/FLAGa6e1e2581 [2022-09-16 11:47:35,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9a67d4c3/06db72c6a55c47fa9344d9c142fb12eb [2022-09-16 11:47:35,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:47:35,869 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:47:35,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:47:35,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:47:35,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:47:35,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:47:35" (1/1) ... [2022-09-16 11:47:35,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebcb97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:35, skipping insertion in model container [2022-09-16 11:47:35,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:47:35" (1/1) ... [2022-09-16 11:47:35,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:47:35,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:47:36,094 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/fibonacci.wvr.c[2330,2343] [2022-09-16 11:47:36,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:47:36,112 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:47:36,143 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/fibonacci.wvr.c[2330,2343] [2022-09-16 11:47:36,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:47:36,159 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:47:36,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:36 WrapperNode [2022-09-16 11:47:36,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:47:36,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:47:36,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:47:36,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:47:36,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:36" (1/1) ... [2022-09-16 11:47:36,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:36" (1/1) ... [2022-09-16 11:47:36,212 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 230 [2022-09-16 11:47:36,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:47:36,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:47:36,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:47:36,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:47:36,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:36" (1/1) ... [2022-09-16 11:47:36,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:36" (1/1) ... [2022-09-16 11:47:36,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:36" (1/1) ... [2022-09-16 11:47:36,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:36" (1/1) ... [2022-09-16 11:47:36,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:36" (1/1) ... [2022-09-16 11:47:36,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:36" (1/1) ... [2022-09-16 11:47:36,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:36" (1/1) ... [2022-09-16 11:47:36,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:47:36,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:47:36,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:47:36,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:47:36,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:36" (1/1) ... [2022-09-16 11:47:36,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:47:36,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:47:36,269 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 11:47:36,274 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 11:47:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:47:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:47:36,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:47:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:47:36,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:47:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:47:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:47:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:47:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:47:36,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:47:36,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:47:36,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:47:36,305 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 11:47:36,427 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:47:36,428 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:47:36,849 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:47:36,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:47:36,866 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 11:47:36,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:47:36 BoogieIcfgContainer [2022-09-16 11:47:36,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:47:36,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:47:36,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:47:36,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:47:36,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:47:35" (1/3) ... [2022-09-16 11:47:36,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39432a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:47:36, skipping insertion in model container [2022-09-16 11:47:36,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:36" (2/3) ... [2022-09-16 11:47:36,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39432a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:47:36, skipping insertion in model container [2022-09-16 11:47:36,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:47:36" (3/3) ... [2022-09-16 11:47:36,876 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2022-09-16 11:47:36,889 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:47:36,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-09-16 11:47:36,890 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:47:36,995 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:47:37,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 325 transitions, 666 flow [2022-09-16 11:47:37,179 INFO L130 PetriNetUnfolder]: 24/323 cut-off events. [2022-09-16 11:47:37,179 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:47:37,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 323 events. 24/323 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 669 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 249. Up to 2 conditions per place. [2022-09-16 11:47:37,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 325 transitions, 666 flow [2022-09-16 11:47:37,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 288 places, 304 transitions, 617 flow [2022-09-16 11:47:37,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:47:37,223 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;@66c182e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:47:37,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2022-09-16 11:47:37,249 INFO L130 PetriNetUnfolder]: 5/97 cut-off events. [2022-09-16 11:47:37,250 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:47:37,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:37,251 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] [2022-09-16 11:47:37,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:37,271 INFO L85 PathProgramCache]: Analyzing trace with hash -92999142, now seen corresponding path program 1 times [2022-09-16 11:47:37,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:37,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110182451] [2022-09-16 11:47:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:37,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:37,555 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 11:47:37,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:37,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110182451] [2022-09-16 11:47:37,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110182451] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:37,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:37,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:37,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006186491] [2022-09-16 11:47:37,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:37,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:37,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:37,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:37,611 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 325 [2022-09-16 11:47:37,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 304 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:37,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:37,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 325 [2022-09-16 11:47:37,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:37,938 INFO L130 PetriNetUnfolder]: 83/874 cut-off events. [2022-09-16 11:47:37,938 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-09-16 11:47:37,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 874 events. 83/874 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3362 event pairs, 0 based on Foata normal form. 245/964 useless extension candidates. Maximal degree in co-relation 1062. Up to 54 conditions per place. [2022-09-16 11:47:37,955 INFO L137 encePairwiseOnDemand]: 304/325 looper letters, 60 selfloop transitions, 10 changer transitions 1/332 dead transitions. [2022-09-16 11:47:37,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 332 transitions, 837 flow [2022-09-16 11:47:37,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:37,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2357 transitions. [2022-09-16 11:47:37,971 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9065384615384615 [2022-09-16 11:47:37,972 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2357 transitions. [2022-09-16 11:47:37,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2357 transitions. [2022-09-16 11:47:37,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:37,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2357 transitions. [2022-09-16 11:47:37,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 294.625) internal successors, (2357), 8 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:37,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:37,994 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:37,995 INFO L175 Difference]: Start difference. First operand has 288 places, 304 transitions, 617 flow. Second operand 8 states and 2357 transitions. [2022-09-16 11:47:37,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 332 transitions, 837 flow [2022-09-16 11:47:38,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 332 transitions, 821 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:47:38,006 INFO L231 Difference]: Finished difference. Result has 298 places, 299 transitions, 656 flow [2022-09-16 11:47:38,007 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=656, PETRI_PLACES=298, PETRI_TRANSITIONS=299} [2022-09-16 11:47:38,011 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 10 predicate places. [2022-09-16 11:47:38,012 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 299 transitions, 656 flow [2022-09-16 11:47:38,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:38,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:38,014 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] [2022-09-16 11:47:38,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:47:38,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:38,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1411994700, now seen corresponding path program 1 times [2022-09-16 11:47:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:38,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628110784] [2022-09-16 11:47:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:38,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:38,126 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 11:47:38,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:38,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628110784] [2022-09-16 11:47:38,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628110784] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:38,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:38,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:38,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611817126] [2022-09-16 11:47:38,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:38,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:38,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:38,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:38,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:38,129 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 325 [2022-09-16 11:47:38,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 299 transitions, 656 flow. Second operand has 4 states, 4 states have (on average 286.75) internal successors, (1147), 4 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:38,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:38,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 325 [2022-09-16 11:47:38,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:38,383 INFO L130 PetriNetUnfolder]: 114/1284 cut-off events. [2022-09-16 11:47:38,384 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-09-16 11:47:38,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1284 events. 114/1284 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6231 event pairs, 30 based on Foata normal form. 8/1072 useless extension candidates. Maximal degree in co-relation 1579. Up to 105 conditions per place. [2022-09-16 11:47:38,411 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 36 selfloop transitions, 6 changer transitions 0/311 dead transitions. [2022-09-16 11:47:38,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 311 transitions, 769 flow [2022-09-16 11:47:38,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:38,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1180 transitions. [2022-09-16 11:47:38,420 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9076923076923077 [2022-09-16 11:47:38,421 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1180 transitions. [2022-09-16 11:47:38,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1180 transitions. [2022-09-16 11:47:38,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:38,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1180 transitions. [2022-09-16 11:47:38,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:38,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:38,430 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:38,430 INFO L175 Difference]: Start difference. First operand has 298 places, 299 transitions, 656 flow. Second operand 4 states and 1180 transitions. [2022-09-16 11:47:38,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 311 transitions, 769 flow [2022-09-16 11:47:38,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 311 transitions, 767 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:38,436 INFO L231 Difference]: Finished difference. Result has 301 places, 301 transitions, 694 flow [2022-09-16 11:47:38,436 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=694, PETRI_PLACES=301, PETRI_TRANSITIONS=301} [2022-09-16 11:47:38,437 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 13 predicate places. [2022-09-16 11:47:38,437 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 301 transitions, 694 flow [2022-09-16 11:47:38,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.75) internal successors, (1147), 4 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:38,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:38,438 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] [2022-09-16 11:47:38,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:47:38,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:38,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:38,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2053324545, now seen corresponding path program 1 times [2022-09-16 11:47:38,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:38,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396815052] [2022-09-16 11:47:38,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:38,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:38,525 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 11:47:38,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:38,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396815052] [2022-09-16 11:47:38,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396815052] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:38,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:38,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:38,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950812969] [2022-09-16 11:47:38,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:38,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:38,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:38,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:38,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:38,529 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 325 [2022-09-16 11:47:38,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 301 transitions, 694 flow. Second operand has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:38,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:38,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 325 [2022-09-16 11:47:38,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:39,145 INFO L130 PetriNetUnfolder]: 410/3091 cut-off events. [2022-09-16 11:47:39,145 INFO L131 PetriNetUnfolder]: For 328/333 co-relation queries the response was YES. [2022-09-16 11:47:39,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3844 conditions, 3091 events. 410/3091 cut-off events. For 328/333 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 29060 event pairs, 0 based on Foata normal form. 0/2326 useless extension candidates. Maximal degree in co-relation 3760. Up to 294 conditions per place. [2022-09-16 11:47:39,184 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 57 selfloop transitions, 10 changer transitions 0/337 dead transitions. [2022-09-16 11:47:39,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 337 transitions, 905 flow [2022-09-16 11:47:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2308 transitions. [2022-09-16 11:47:39,188 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8876923076923077 [2022-09-16 11:47:39,188 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2308 transitions. [2022-09-16 11:47:39,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2308 transitions. [2022-09-16 11:47:39,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:39,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2308 transitions. [2022-09-16 11:47:39,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 288.5) internal successors, (2308), 8 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,197 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,197 INFO L175 Difference]: Start difference. First operand has 301 places, 301 transitions, 694 flow. Second operand 8 states and 2308 transitions. [2022-09-16 11:47:39,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 337 transitions, 905 flow [2022-09-16 11:47:39,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 337 transitions, 905 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:47:39,203 INFO L231 Difference]: Finished difference. Result has 314 places, 308 transitions, 762 flow [2022-09-16 11:47:39,203 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=762, PETRI_PLACES=314, PETRI_TRANSITIONS=308} [2022-09-16 11:47:39,204 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 26 predicate places. [2022-09-16 11:47:39,204 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 308 transitions, 762 flow [2022-09-16 11:47:39,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:39,205 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] [2022-09-16 11:47:39,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:47:39,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash -771447620, now seen corresponding path program 1 times [2022-09-16 11:47:39,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:39,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583108624] [2022-09-16 11:47:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:39,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:39,242 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 11:47:39,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:39,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583108624] [2022-09-16 11:47:39,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583108624] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:39,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:39,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:39,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592026381] [2022-09-16 11:47:39,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:39,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:39,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:39,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:39,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:39,245 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 325 [2022-09-16 11:47:39,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 308 transitions, 762 flow. Second operand has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:39,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 325 [2022-09-16 11:47:39,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:40,121 INFO L130 PetriNetUnfolder]: 556/4544 cut-off events. [2022-09-16 11:47:40,121 INFO L131 PetriNetUnfolder]: For 624/629 co-relation queries the response was YES. [2022-09-16 11:47:40,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5723 conditions, 4544 events. 556/4544 cut-off events. For 624/629 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 43848 event pairs, 180 based on Foata normal form. 28/3489 useless extension candidates. Maximal degree in co-relation 5634. Up to 427 conditions per place. [2022-09-16 11:47:40,178 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 35 selfloop transitions, 6 changer transitions 0/319 dead transitions. [2022-09-16 11:47:40,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 319 transitions, 868 flow [2022-09-16 11:47:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1179 transitions. [2022-09-16 11:47:40,180 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9069230769230769 [2022-09-16 11:47:40,180 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1179 transitions. [2022-09-16 11:47:40,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1179 transitions. [2022-09-16 11:47:40,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:40,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1179 transitions. [2022-09-16 11:47:40,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:40,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:40,222 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:40,222 INFO L175 Difference]: Start difference. First operand has 314 places, 308 transitions, 762 flow. Second operand 4 states and 1179 transitions. [2022-09-16 11:47:40,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 319 transitions, 868 flow [2022-09-16 11:47:40,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 319 transitions, 866 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:40,230 INFO L231 Difference]: Finished difference. Result has 318 places, 310 transitions, 800 flow [2022-09-16 11:47:40,230 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=800, PETRI_PLACES=318, PETRI_TRANSITIONS=310} [2022-09-16 11:47:40,231 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 30 predicate places. [2022-09-16 11:47:40,231 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 310 transitions, 800 flow [2022-09-16 11:47:40,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:40,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:40,235 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 11:47:40,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:47:40,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:40,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash 645188787, now seen corresponding path program 1 times [2022-09-16 11:47:40,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:40,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418939023] [2022-09-16 11:47:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:40,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:47:40,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:40,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418939023] [2022-09-16 11:47:40,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418939023] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:40,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:40,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:40,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066479147] [2022-09-16 11:47:40,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:40,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:40,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:40,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:40,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:40,306 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 325 [2022-09-16 11:47:40,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 310 transitions, 800 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:40,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:40,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 325 [2022-09-16 11:47:40,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:40,686 INFO L130 PetriNetUnfolder]: 127/1687 cut-off events. [2022-09-16 11:47:40,686 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-09-16 11:47:40,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 1687 events. 127/1687 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9581 event pairs, 24 based on Foata normal form. 4/1402 useless extension candidates. Maximal degree in co-relation 2084. Up to 95 conditions per place. [2022-09-16 11:47:40,736 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 37 selfloop transitions, 5 changer transitions 0/320 dead transitions. [2022-09-16 11:47:40,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 320 transitions, 909 flow [2022-09-16 11:47:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1178 transitions. [2022-09-16 11:47:40,739 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9061538461538462 [2022-09-16 11:47:40,739 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1178 transitions. [2022-09-16 11:47:40,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1178 transitions. [2022-09-16 11:47:40,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:40,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1178 transitions. [2022-09-16 11:47:40,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 294.5) internal successors, (1178), 4 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:40,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:40,743 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:40,743 INFO L175 Difference]: Start difference. First operand has 318 places, 310 transitions, 800 flow. Second operand 4 states and 1178 transitions. [2022-09-16 11:47:40,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 320 transitions, 909 flow [2022-09-16 11:47:40,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 320 transitions, 905 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:40,749 INFO L231 Difference]: Finished difference. Result has 321 places, 310 transitions, 811 flow [2022-09-16 11:47:40,749 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=811, PETRI_PLACES=321, PETRI_TRANSITIONS=310} [2022-09-16 11:47:40,750 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 33 predicate places. [2022-09-16 11:47:40,750 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 310 transitions, 811 flow [2022-09-16 11:47:40,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:40,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:40,750 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] [2022-09-16 11:47:40,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:47:40,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:40,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:40,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1473983260, now seen corresponding path program 1 times [2022-09-16 11:47:40,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:40,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830841426] [2022-09-16 11:47:40,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:40,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:40,785 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 11:47:40,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:40,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830841426] [2022-09-16 11:47:40,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830841426] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:40,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:40,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791200549] [2022-09-16 11:47:40,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:40,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:40,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:40,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:40,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:40,828 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 325 [2022-09-16 11:47:40,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 310 transitions, 811 flow. Second operand has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:40,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:40,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 325 [2022-09-16 11:47:40,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:41,311 INFO L130 PetriNetUnfolder]: 130/1694 cut-off events. [2022-09-16 11:47:41,311 INFO L131 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2022-09-16 11:47:41,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2282 conditions, 1694 events. 130/1694 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9713 event pairs, 0 based on Foata normal form. 0/1407 useless extension candidates. Maximal degree in co-relation 1902. Up to 120 conditions per place. [2022-09-16 11:47:41,385 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 50 selfloop transitions, 11 changer transitions 0/332 dead transitions. [2022-09-16 11:47:41,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 332 transitions, 1007 flow [2022-09-16 11:47:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2299 transitions. [2022-09-16 11:47:41,389 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8842307692307693 [2022-09-16 11:47:41,389 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2299 transitions. [2022-09-16 11:47:41,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2299 transitions. [2022-09-16 11:47:41,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:41,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2299 transitions. [2022-09-16 11:47:41,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 287.375) internal successors, (2299), 8 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:41,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:41,475 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:41,475 INFO L175 Difference]: Start difference. First operand has 321 places, 310 transitions, 811 flow. Second operand 8 states and 2299 transitions. [2022-09-16 11:47:41,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 332 transitions, 1007 flow [2022-09-16 11:47:41,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 332 transitions, 995 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:41,480 INFO L231 Difference]: Finished difference. Result has 329 places, 312 transitions, 858 flow [2022-09-16 11:47:41,481 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=858, PETRI_PLACES=329, PETRI_TRANSITIONS=312} [2022-09-16 11:47:41,481 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 41 predicate places. [2022-09-16 11:47:41,481 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 312 transitions, 858 flow [2022-09-16 11:47:41,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:41,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:41,482 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 11:47:41,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:47:41,482 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:41,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1716649447, now seen corresponding path program 1 times [2022-09-16 11:47:41,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:41,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944819463] [2022-09-16 11:47:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:41,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:41,521 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 11:47:41,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:41,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944819463] [2022-09-16 11:47:41,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944819463] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:41,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:41,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:41,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588078301] [2022-09-16 11:47:41,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:41,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:47:41,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:47:41,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:47:41,524 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 325 [2022-09-16 11:47:41,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 312 transitions, 858 flow. Second operand has 5 states, 5 states have (on average 283.6) internal successors, (1418), 5 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:41,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:41,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 325 [2022-09-16 11:47:41,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:41,924 INFO L130 PetriNetUnfolder]: 142/1712 cut-off events. [2022-09-16 11:47:41,924 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2022-09-16 11:47:41,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 1712 events. 142/1712 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9856 event pairs, 37 based on Foata normal form. 0/1429 useless extension candidates. Maximal degree in co-relation 2206. Up to 128 conditions per place. [2022-09-16 11:47:41,990 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 44 selfloop transitions, 9 changer transitions 0/327 dead transitions. [2022-09-16 11:47:41,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 327 transitions, 993 flow [2022-09-16 11:47:41,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1734 transitions. [2022-09-16 11:47:41,993 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8892307692307693 [2022-09-16 11:47:41,993 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1734 transitions. [2022-09-16 11:47:41,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1734 transitions. [2022-09-16 11:47:41,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:41,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1734 transitions. [2022-09-16 11:47:41,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 289.0) internal successors, (1734), 6 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:41,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:41,999 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:41,999 INFO L175 Difference]: Start difference. First operand has 329 places, 312 transitions, 858 flow. Second operand 6 states and 1734 transitions. [2022-09-16 11:47:41,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 327 transitions, 993 flow [2022-09-16 11:47:42,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 327 transitions, 969 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-09-16 11:47:42,005 INFO L231 Difference]: Finished difference. Result has 329 places, 314 transitions, 867 flow [2022-09-16 11:47:42,005 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=867, PETRI_PLACES=329, PETRI_TRANSITIONS=314} [2022-09-16 11:47:42,006 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 41 predicate places. [2022-09-16 11:47:42,006 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 314 transitions, 867 flow [2022-09-16 11:47:42,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 283.6) internal successors, (1418), 5 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:42,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:42,007 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 11:47:42,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:47:42,007 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:42,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:42,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1938319197, now seen corresponding path program 1 times [2022-09-16 11:47:42,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:42,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745393221] [2022-09-16 11:47:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:42,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:42,031 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 11:47:42,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:42,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745393221] [2022-09-16 11:47:42,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745393221] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:42,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:42,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:42,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225746635] [2022-09-16 11:47:42,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:42,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:42,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:42,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:42,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:42,034 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 325 [2022-09-16 11:47:42,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 314 transitions, 867 flow. Second operand has 4 states, 4 states have (on average 287.5) internal successors, (1150), 4 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:42,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:42,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 325 [2022-09-16 11:47:42,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:42,779 INFO L130 PetriNetUnfolder]: 540/4533 cut-off events. [2022-09-16 11:47:42,779 INFO L131 PetriNetUnfolder]: For 935/940 co-relation queries the response was YES. [2022-09-16 11:47:42,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5921 conditions, 4533 events. 540/4533 cut-off events. For 935/940 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 43882 event pairs, 144 based on Foata normal form. 14/3483 useless extension candidates. Maximal degree in co-relation 5824. Up to 397 conditions per place. [2022-09-16 11:47:42,855 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 36 selfloop transitions, 5 changer transitions 0/323 dead transitions. [2022-09-16 11:47:42,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 323 transitions, 969 flow [2022-09-16 11:47:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:42,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1177 transitions. [2022-09-16 11:47:42,858 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9053846153846153 [2022-09-16 11:47:42,858 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1177 transitions. [2022-09-16 11:47:42,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1177 transitions. [2022-09-16 11:47:42,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:42,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1177 transitions. [2022-09-16 11:47:42,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 294.25) internal successors, (1177), 4 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:42,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:42,862 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:42,862 INFO L175 Difference]: Start difference. First operand has 329 places, 314 transitions, 867 flow. Second operand 4 states and 1177 transitions. [2022-09-16 11:47:42,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 323 transitions, 969 flow [2022-09-16 11:47:42,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 323 transitions, 953 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-09-16 11:47:42,868 INFO L231 Difference]: Finished difference. Result has 330 places, 314 transitions, 866 flow [2022-09-16 11:47:42,869 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=866, PETRI_PLACES=330, PETRI_TRANSITIONS=314} [2022-09-16 11:47:42,869 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 42 predicate places. [2022-09-16 11:47:42,869 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 314 transitions, 866 flow [2022-09-16 11:47:42,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.5) internal successors, (1150), 4 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:42,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:42,870 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] [2022-09-16 11:47:42,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:47:42,870 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:42,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:42,871 INFO L85 PathProgramCache]: Analyzing trace with hash 41647979, now seen corresponding path program 1 times [2022-09-16 11:47:42,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:42,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130197819] [2022-09-16 11:47:42,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:42,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:42,902 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 11:47:42,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:42,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130197819] [2022-09-16 11:47:42,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130197819] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:42,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:42,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:42,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346715025] [2022-09-16 11:47:42,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:42,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:42,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:42,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:42,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:42,904 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 325 [2022-09-16 11:47:42,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 314 transitions, 866 flow. Second operand has 6 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:42,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:42,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 325 [2022-09-16 11:47:42,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:43,736 INFO L130 PetriNetUnfolder]: 558/4567 cut-off events. [2022-09-16 11:47:43,737 INFO L131 PetriNetUnfolder]: For 1134/1139 co-relation queries the response was YES. [2022-09-16 11:47:43,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6097 conditions, 4567 events. 558/4567 cut-off events. For 1134/1139 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 46882 event pairs, 0 based on Foata normal form. 0/3507 useless extension candidates. Maximal degree in co-relation 5993. Up to 497 conditions per place. [2022-09-16 11:47:43,805 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 48 selfloop transitions, 11 changer transitions 0/334 dead transitions. [2022-09-16 11:47:43,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 334 transitions, 1047 flow [2022-09-16 11:47:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2297 transitions. [2022-09-16 11:47:43,810 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8834615384615384 [2022-09-16 11:47:43,810 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2297 transitions. [2022-09-16 11:47:43,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2297 transitions. [2022-09-16 11:47:43,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:43,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2297 transitions. [2022-09-16 11:47:43,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 287.125) internal successors, (2297), 8 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:43,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:43,817 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:43,818 INFO L175 Difference]: Start difference. First operand has 330 places, 314 transitions, 866 flow. Second operand 8 states and 2297 transitions. [2022-09-16 11:47:43,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 334 transitions, 1047 flow [2022-09-16 11:47:43,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 334 transitions, 1035 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:43,824 INFO L231 Difference]: Finished difference. Result has 338 places, 316 transitions, 913 flow [2022-09-16 11:47:43,824 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=913, PETRI_PLACES=338, PETRI_TRANSITIONS=316} [2022-09-16 11:47:43,825 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 50 predicate places. [2022-09-16 11:47:43,825 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 316 transitions, 913 flow [2022-09-16 11:47:43,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:43,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:43,826 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] [2022-09-16 11:47:43,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:47:43,826 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:43,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:43,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1890279305, now seen corresponding path program 1 times [2022-09-16 11:47:43,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:43,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36252196] [2022-09-16 11:47:43,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:43,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:43,872 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 11:47:43,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:43,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36252196] [2022-09-16 11:47:43,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36252196] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:43,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:43,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:43,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322324718] [2022-09-16 11:47:43,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:43,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:43,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:43,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:43,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:43,875 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 325 [2022-09-16 11:47:43,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 316 transitions, 913 flow. Second operand has 8 states, 8 states have (on average 275.125) internal successors, (2201), 8 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:43,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:43,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 325 [2022-09-16 11:47:43,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:44,461 INFO L130 PetriNetUnfolder]: 149/1794 cut-off events. [2022-09-16 11:47:44,461 INFO L131 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2022-09-16 11:47:44,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 1794 events. 149/1794 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 10773 event pairs, 2 based on Foata normal form. 0/1516 useless extension candidates. Maximal degree in co-relation 2233. Up to 97 conditions per place. [2022-09-16 11:47:44,540 INFO L137 encePairwiseOnDemand]: 311/325 looper letters, 70 selfloop transitions, 23 changer transitions 0/360 dead transitions. [2022-09-16 11:47:44,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 360 transitions, 1237 flow [2022-09-16 11:47:44,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:47:44,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:47:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3634 transitions. [2022-09-16 11:47:44,547 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8601183431952663 [2022-09-16 11:47:44,547 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3634 transitions. [2022-09-16 11:47:44,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3634 transitions. [2022-09-16 11:47:44,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:44,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3634 transitions. [2022-09-16 11:47:44,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 279.53846153846155) internal successors, (3634), 13 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:44,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:44,558 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:44,558 INFO L175 Difference]: Start difference. First operand has 338 places, 316 transitions, 913 flow. Second operand 13 states and 3634 transitions. [2022-09-16 11:47:44,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 360 transitions, 1237 flow [2022-09-16 11:47:44,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 360 transitions, 1225 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:44,565 INFO L231 Difference]: Finished difference. Result has 350 places, 328 transitions, 1032 flow [2022-09-16 11:47:44,566 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1032, PETRI_PLACES=350, PETRI_TRANSITIONS=328} [2022-09-16 11:47:44,566 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 62 predicate places. [2022-09-16 11:47:44,566 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 328 transitions, 1032 flow [2022-09-16 11:47:44,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 275.125) internal successors, (2201), 8 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:44,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:44,567 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 11:47:44,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:47:44,567 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:44,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:44,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1530882854, now seen corresponding path program 1 times [2022-09-16 11:47:44,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:44,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626215086] [2022-09-16 11:47:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:44,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:44,615 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 11:47:44,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:44,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626215086] [2022-09-16 11:47:44,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626215086] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:44,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:44,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:44,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706030348] [2022-09-16 11:47:44,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:44,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:44,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:44,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:44,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:44,618 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 325 [2022-09-16 11:47:44,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 328 transitions, 1032 flow. Second operand has 8 states, 8 states have (on average 275.25) internal successors, (2202), 8 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:44,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:44,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 325 [2022-09-16 11:47:44,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:45,181 INFO L130 PetriNetUnfolder]: 142/1785 cut-off events. [2022-09-16 11:47:45,181 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2022-09-16 11:47:45,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2689 conditions, 1785 events. 142/1785 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 10645 event pairs, 2 based on Foata normal form. 0/1529 useless extension candidates. Maximal degree in co-relation 2298. Up to 90 conditions per place. [2022-09-16 11:47:45,257 INFO L137 encePairwiseOnDemand]: 310/325 looper letters, 69 selfloop transitions, 22 changer transitions 0/364 dead transitions. [2022-09-16 11:47:45,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 364 transitions, 1331 flow [2022-09-16 11:47:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:47:45,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:47:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3636 transitions. [2022-09-16 11:47:45,262 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8605917159763313 [2022-09-16 11:47:45,262 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3636 transitions. [2022-09-16 11:47:45,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3636 transitions. [2022-09-16 11:47:45,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:45,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3636 transitions. [2022-09-16 11:47:45,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 279.6923076923077) internal successors, (3636), 13 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:45,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:45,272 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:45,272 INFO L175 Difference]: Start difference. First operand has 350 places, 328 transitions, 1032 flow. Second operand 13 states and 3636 transitions. [2022-09-16 11:47:45,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 364 transitions, 1331 flow [2022-09-16 11:47:45,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 364 transitions, 1317 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-16 11:47:45,279 INFO L231 Difference]: Finished difference. Result has 363 places, 337 transitions, 1130 flow [2022-09-16 11:47:45,280 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1130, PETRI_PLACES=363, PETRI_TRANSITIONS=337} [2022-09-16 11:47:45,280 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 75 predicate places. [2022-09-16 11:47:45,280 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 337 transitions, 1130 flow [2022-09-16 11:47:45,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 275.25) internal successors, (2202), 8 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:45,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:45,281 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 11:47:45,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:47:45,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:45,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:45,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2050606706, now seen corresponding path program 1 times [2022-09-16 11:47:45,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:45,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160983012] [2022-09-16 11:47:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:47:45,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:45,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160983012] [2022-09-16 11:47:45,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160983012] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:45,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:45,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:45,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020845892] [2022-09-16 11:47:45,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:45,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:45,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:45,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:45,305 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 325 [2022-09-16 11:47:45,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 337 transitions, 1130 flow. Second operand has 4 states, 4 states have (on average 287.75) internal successors, (1151), 4 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:45,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:45,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 325 [2022-09-16 11:47:45,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:46,533 INFO L130 PetriNetUnfolder]: 1107/8560 cut-off events. [2022-09-16 11:47:46,534 INFO L131 PetriNetUnfolder]: For 2653/2663 co-relation queries the response was YES. [2022-09-16 11:47:46,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11584 conditions, 8560 events. 1107/8560 cut-off events. For 2653/2663 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 103682 event pairs, 407 based on Foata normal form. 24/6466 useless extension candidates. Maximal degree in co-relation 11468. Up to 925 conditions per place. [2022-09-16 11:47:46,667 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 36 selfloop transitions, 5 changer transitions 0/345 dead transitions. [2022-09-16 11:47:46,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 345 transitions, 1232 flow [2022-09-16 11:47:46,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1175 transitions. [2022-09-16 11:47:46,669 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9038461538461539 [2022-09-16 11:47:46,669 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1175 transitions. [2022-09-16 11:47:46,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1175 transitions. [2022-09-16 11:47:46,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:46,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1175 transitions. [2022-09-16 11:47:46,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:46,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:46,673 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:46,673 INFO L175 Difference]: Start difference. First operand has 363 places, 337 transitions, 1130 flow. Second operand 4 states and 1175 transitions. [2022-09-16 11:47:46,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 345 transitions, 1232 flow [2022-09-16 11:47:46,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 345 transitions, 1212 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:46,682 INFO L231 Difference]: Finished difference. Result has 362 places, 337 transitions, 1132 flow [2022-09-16 11:47:46,683 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1132, PETRI_PLACES=362, PETRI_TRANSITIONS=337} [2022-09-16 11:47:46,683 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 74 predicate places. [2022-09-16 11:47:46,683 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 337 transitions, 1132 flow [2022-09-16 11:47:46,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.75) internal successors, (1151), 4 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:46,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:46,684 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 11:47:46,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:47:46,684 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:46,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:46,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1768334014, now seen corresponding path program 1 times [2022-09-16 11:47:46,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:46,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373838740] [2022-09-16 11:47:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:46,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:46,726 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 11:47:46,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:46,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373838740] [2022-09-16 11:47:46,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373838740] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:46,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:46,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:46,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855522813] [2022-09-16 11:47:46,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:46,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:46,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:46,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:46,728 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 325 [2022-09-16 11:47:46,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 337 transitions, 1132 flow. Second operand has 6 states, 6 states have (on average 268.3333333333333) internal successors, (1610), 6 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:46,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:46,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 325 [2022-09-16 11:47:46,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:47,271 INFO L130 PetriNetUnfolder]: 214/1926 cut-off events. [2022-09-16 11:47:47,271 INFO L131 PetriNetUnfolder]: For 601/601 co-relation queries the response was YES. [2022-09-16 11:47:47,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3273 conditions, 1926 events. 214/1926 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 12226 event pairs, 61 based on Foata normal form. 4/1671 useless extension candidates. Maximal degree in co-relation 3077. Up to 231 conditions per place. [2022-09-16 11:47:47,328 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 65 selfloop transitions, 14 changer transitions 0/348 dead transitions. [2022-09-16 11:47:47,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 348 transitions, 1322 flow [2022-09-16 11:47:47,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:47,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1914 transitions. [2022-09-16 11:47:47,331 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8413186813186814 [2022-09-16 11:47:47,331 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1914 transitions. [2022-09-16 11:47:47,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1914 transitions. [2022-09-16 11:47:47,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:47,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1914 transitions. [2022-09-16 11:47:47,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.42857142857144) internal successors, (1914), 7 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:47,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:47,336 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:47,336 INFO L175 Difference]: Start difference. First operand has 362 places, 337 transitions, 1132 flow. Second operand 7 states and 1914 transitions. [2022-09-16 11:47:47,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 348 transitions, 1322 flow [2022-09-16 11:47:47,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 348 transitions, 1318 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:47,343 INFO L231 Difference]: Finished difference. Result has 372 places, 341 transitions, 1201 flow [2022-09-16 11:47:47,343 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1201, PETRI_PLACES=372, PETRI_TRANSITIONS=341} [2022-09-16 11:47:47,344 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 84 predicate places. [2022-09-16 11:47:47,344 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 341 transitions, 1201 flow [2022-09-16 11:47:47,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 268.3333333333333) internal successors, (1610), 6 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:47,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:47,344 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 11:47:47,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:47:47,344 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:47,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:47,345 INFO L85 PathProgramCache]: Analyzing trace with hash -289189362, now seen corresponding path program 1 times [2022-09-16 11:47:47,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:47,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846315053] [2022-09-16 11:47:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:47,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:47,382 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 11:47:47,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:47,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846315053] [2022-09-16 11:47:47,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846315053] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:47,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:47,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:47,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382599405] [2022-09-16 11:47:47,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:47,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:47,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:47,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:47,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:47,384 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 325 [2022-09-16 11:47:47,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 341 transitions, 1201 flow. Second operand has 6 states, 6 states have (on average 268.5) internal successors, (1611), 6 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:47,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:47,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 325 [2022-09-16 11:47:47,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:47,899 INFO L130 PetriNetUnfolder]: 208/1916 cut-off events. [2022-09-16 11:47:47,900 INFO L131 PetriNetUnfolder]: For 835/835 co-relation queries the response was YES. [2022-09-16 11:47:47,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3361 conditions, 1916 events. 208/1916 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 12159 event pairs, 50 based on Foata normal form. 4/1681 useless extension candidates. Maximal degree in co-relation 3149. Up to 250 conditions per place. [2022-09-16 11:47:47,997 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 73 selfloop transitions, 16 changer transitions 0/361 dead transitions. [2022-09-16 11:47:47,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 361 transitions, 1463 flow [2022-09-16 11:47:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1922 transitions. [2022-09-16 11:47:48,000 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8448351648351649 [2022-09-16 11:47:48,000 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1922 transitions. [2022-09-16 11:47:48,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1922 transitions. [2022-09-16 11:47:48,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:48,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1922 transitions. [2022-09-16 11:47:48,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 274.57142857142856) internal successors, (1922), 7 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:48,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:48,005 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:48,005 INFO L175 Difference]: Start difference. First operand has 372 places, 341 transitions, 1201 flow. Second operand 7 states and 1922 transitions. [2022-09-16 11:47:48,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 361 transitions, 1463 flow [2022-09-16 11:47:48,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 361 transitions, 1453 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:48,014 INFO L231 Difference]: Finished difference. Result has 382 places, 348 transitions, 1298 flow [2022-09-16 11:47:48,014 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1298, PETRI_PLACES=382, PETRI_TRANSITIONS=348} [2022-09-16 11:47:48,015 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 94 predicate places. [2022-09-16 11:47:48,015 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 348 transitions, 1298 flow [2022-09-16 11:47:48,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 268.5) internal successors, (1611), 6 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:48,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:48,015 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 11:47:48,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:47:48,016 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:48,016 INFO L85 PathProgramCache]: Analyzing trace with hash -17607312, now seen corresponding path program 1 times [2022-09-16 11:47:48,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:48,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813559737] [2022-09-16 11:47:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:48,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:48,057 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 11:47:48,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:48,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813559737] [2022-09-16 11:47:48,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813559737] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:48,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:48,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:48,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436112943] [2022-09-16 11:47:48,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:48,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:48,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:48,060 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 325 [2022-09-16 11:47:48,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 348 transitions, 1298 flow. Second operand has 8 states, 8 states have (on average 275.25) internal successors, (2202), 8 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:48,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:48,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 325 [2022-09-16 11:47:48,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:49,765 INFO L130 PetriNetUnfolder]: 1409/9290 cut-off events. [2022-09-16 11:47:49,765 INFO L131 PetriNetUnfolder]: For 3301/3311 co-relation queries the response was YES. [2022-09-16 11:47:49,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13435 conditions, 9290 events. 1409/9290 cut-off events. For 3301/3311 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 119704 event pairs, 22 based on Foata normal form. 0/6971 useless extension candidates. Maximal degree in co-relation 13303. Up to 1188 conditions per place. [2022-09-16 11:47:49,895 INFO L137 encePairwiseOnDemand]: 311/325 looper letters, 61 selfloop transitions, 22 changer transitions 1/385 dead transitions. [2022-09-16 11:47:49,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 385 transitions, 1562 flow [2022-09-16 11:47:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:47:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:47:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3630 transitions. [2022-09-16 11:47:49,904 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8591715976331361 [2022-09-16 11:47:49,904 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3630 transitions. [2022-09-16 11:47:49,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3630 transitions. [2022-09-16 11:47:49,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:49,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3630 transitions. [2022-09-16 11:47:49,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 279.2307692307692) internal successors, (3630), 13 states have internal predecessors, (3630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:49,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:49,913 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:49,914 INFO L175 Difference]: Start difference. First operand has 382 places, 348 transitions, 1298 flow. Second operand 13 states and 3630 transitions. [2022-09-16 11:47:49,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 385 transitions, 1562 flow [2022-09-16 11:47:49,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 385 transitions, 1553 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:49,925 INFO L231 Difference]: Finished difference. Result has 398 places, 358 transitions, 1400 flow [2022-09-16 11:47:49,925 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1400, PETRI_PLACES=398, PETRI_TRANSITIONS=358} [2022-09-16 11:47:49,926 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 110 predicate places. [2022-09-16 11:47:49,926 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 358 transitions, 1400 flow [2022-09-16 11:47:49,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 275.25) internal successors, (2202), 8 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:49,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:49,926 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] [2022-09-16 11:47:49,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:47:49,927 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:49,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:49,927 INFO L85 PathProgramCache]: Analyzing trace with hash -545825718, now seen corresponding path program 1 times [2022-09-16 11:47:49,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:49,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55982134] [2022-09-16 11:47:49,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:49,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:49,990 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 11:47:49,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:49,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55982134] [2022-09-16 11:47:49,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55982134] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:49,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:49,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:49,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758879120] [2022-09-16 11:47:49,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:49,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:49,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:49,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:49,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:49,994 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 325 [2022-09-16 11:47:49,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 358 transitions, 1400 flow. Second operand has 8 states, 8 states have (on average 275.375) internal successors, (2203), 8 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:49,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:49,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 325 [2022-09-16 11:47:49,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:51,821 INFO L130 PetriNetUnfolder]: 1299/9156 cut-off events. [2022-09-16 11:47:51,821 INFO L131 PetriNetUnfolder]: For 4758/4768 co-relation queries the response was YES. [2022-09-16 11:47:51,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13842 conditions, 9156 events. 1299/9156 cut-off events. For 4758/4768 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 115921 event pairs, 22 based on Foata normal form. 0/7093 useless extension candidates. Maximal degree in co-relation 13701. Up to 1078 conditions per place. [2022-09-16 11:47:51,965 INFO L137 encePairwiseOnDemand]: 310/325 looper letters, 63 selfloop transitions, 23 changer transitions 1/391 dead transitions. [2022-09-16 11:47:51,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 391 transitions, 1672 flow [2022-09-16 11:47:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:47:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:47:51,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3632 transitions. [2022-09-16 11:47:51,969 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8596449704142012 [2022-09-16 11:47:51,969 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3632 transitions. [2022-09-16 11:47:51,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3632 transitions. [2022-09-16 11:47:51,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:51,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3632 transitions. [2022-09-16 11:47:51,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 279.38461538461536) internal successors, (3632), 13 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:51,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:51,978 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:51,978 INFO L175 Difference]: Start difference. First operand has 398 places, 358 transitions, 1400 flow. Second operand 13 states and 3632 transitions. [2022-09-16 11:47:51,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 391 transitions, 1672 flow [2022-09-16 11:47:51,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 391 transitions, 1656 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-16 11:47:51,994 INFO L231 Difference]: Finished difference. Result has 411 places, 367 transitions, 1496 flow [2022-09-16 11:47:51,994 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1496, PETRI_PLACES=411, PETRI_TRANSITIONS=367} [2022-09-16 11:47:51,994 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 123 predicate places. [2022-09-16 11:47:51,994 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 367 transitions, 1496 flow [2022-09-16 11:47:51,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 275.375) internal successors, (2203), 8 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:51,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:51,995 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 11:47:51,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:47:51,995 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:51,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:51,995 INFO L85 PathProgramCache]: Analyzing trace with hash -779526898, now seen corresponding path program 1 times [2022-09-16 11:47:51,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:51,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65573345] [2022-09-16 11:47:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:51,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:52,047 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 11:47:52,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:52,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65573345] [2022-09-16 11:47:52,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65573345] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:52,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:52,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:52,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874424801] [2022-09-16 11:47:52,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:52,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:52,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:52,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:52,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:52,049 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 325 [2022-09-16 11:47:52,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 367 transitions, 1496 flow. Second operand has 6 states, 6 states have (on average 268.5) internal successors, (1611), 6 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:52,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:52,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 325 [2022-09-16 11:47:52,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:54,056 INFO L130 PetriNetUnfolder]: 2135/9871 cut-off events. [2022-09-16 11:47:54,057 INFO L131 PetriNetUnfolder]: For 6135/6145 co-relation queries the response was YES. [2022-09-16 11:47:54,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16778 conditions, 9871 events. 2135/9871 cut-off events. For 6135/6145 co-relation queries the response was YES. Maximal size of possible extension queue 1441. Compared 135002 event pairs, 671 based on Foata normal form. 24/7082 useless extension candidates. Maximal degree in co-relation 16637. Up to 1978 conditions per place. [2022-09-16 11:47:54,183 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 58 selfloop transitions, 15 changer transitions 1/377 dead transitions. [2022-09-16 11:47:54,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 377 transitions, 1668 flow [2022-09-16 11:47:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1913 transitions. [2022-09-16 11:47:54,185 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8408791208791209 [2022-09-16 11:47:54,185 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1913 transitions. [2022-09-16 11:47:54,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1913 transitions. [2022-09-16 11:47:54,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:54,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1913 transitions. [2022-09-16 11:47:54,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.2857142857143) internal successors, (1913), 7 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 11:47:54,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:54,189 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:54,189 INFO L175 Difference]: Start difference. First operand has 411 places, 367 transitions, 1496 flow. Second operand 7 states and 1913 transitions. [2022-09-16 11:47:54,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 377 transitions, 1668 flow [2022-09-16 11:47:54,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 377 transitions, 1656 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-16 11:47:54,206 INFO L231 Difference]: Finished difference. Result has 419 places, 371 transitions, 1561 flow [2022-09-16 11:47:54,206 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1561, PETRI_PLACES=419, PETRI_TRANSITIONS=371} [2022-09-16 11:47:54,206 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 131 predicate places. [2022-09-16 11:47:54,206 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 371 transitions, 1561 flow [2022-09-16 11:47:54,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 268.5) internal successors, (1611), 6 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:54,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:54,207 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 11:47:54,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:47:54,207 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1963466187, now seen corresponding path program 1 times [2022-09-16 11:47:54,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:54,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852631088] [2022-09-16 11:47:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:54,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:54,246 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 11:47:54,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:54,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852631088] [2022-09-16 11:47:54,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852631088] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:54,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:54,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:54,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587072662] [2022-09-16 11:47:54,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:54,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:54,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:54,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:54,248 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 325 [2022-09-16 11:47:54,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 371 transitions, 1561 flow. Second operand has 6 states, 6 states have (on average 268.6666666666667) internal successors, (1612), 6 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:54,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:54,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 325 [2022-09-16 11:47:54,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:56,450 INFO L130 PetriNetUnfolder]: 2047/9759 cut-off events. [2022-09-16 11:47:56,450 INFO L131 PetriNetUnfolder]: For 7570/7580 co-relation queries the response was YES. [2022-09-16 11:47:56,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17265 conditions, 9759 events. 2047/9759 cut-off events. For 7570/7580 co-relation queries the response was YES. Maximal size of possible extension queue 1377. Compared 132459 event pairs, 561 based on Foata normal form. 24/7170 useless extension candidates. Maximal degree in co-relation 17120. Up to 2116 conditions per place. [2022-09-16 11:47:56,587 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 71 selfloop transitions, 17 changer transitions 1/392 dead transitions. [2022-09-16 11:47:56,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 392 transitions, 1829 flow [2022-09-16 11:47:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:56,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1921 transitions. [2022-09-16 11:47:56,589 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8443956043956043 [2022-09-16 11:47:56,589 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1921 transitions. [2022-09-16 11:47:56,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1921 transitions. [2022-09-16 11:47:56,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:56,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1921 transitions. [2022-09-16 11:47:56,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 274.42857142857144) internal successors, (1921), 7 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:56,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:56,592 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:56,592 INFO L175 Difference]: Start difference. First operand has 419 places, 371 transitions, 1561 flow. Second operand 7 states and 1921 transitions. [2022-09-16 11:47:56,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 392 transitions, 1829 flow [2022-09-16 11:47:56,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 392 transitions, 1818 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:56,647 INFO L231 Difference]: Finished difference. Result has 429 places, 378 transitions, 1661 flow [2022-09-16 11:47:56,648 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1661, PETRI_PLACES=429, PETRI_TRANSITIONS=378} [2022-09-16 11:47:56,648 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 141 predicate places. [2022-09-16 11:47:56,649 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 378 transitions, 1661 flow [2022-09-16 11:47:56,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 268.6666666666667) internal successors, (1612), 6 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:56,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:56,649 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] [2022-09-16 11:47:56,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:47:56,649 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:56,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1730133837, now seen corresponding path program 1 times [2022-09-16 11:47:56,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:56,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339459935] [2022-09-16 11:47:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:56,717 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 11:47:56,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:56,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339459935] [2022-09-16 11:47:56,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339459935] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:56,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:56,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:56,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169177840] [2022-09-16 11:47:56,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:56,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:56,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:56,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:56,720 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 325 [2022-09-16 11:47:56,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 378 transitions, 1661 flow. Second operand has 8 states, 8 states have (on average 262.5) internal successors, (2100), 8 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:56,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:56,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 325 [2022-09-16 11:47:56,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:57,994 INFO L130 PetriNetUnfolder]: 327/2761 cut-off events. [2022-09-16 11:47:57,994 INFO L131 PetriNetUnfolder]: For 2029/2031 co-relation queries the response was YES. [2022-09-16 11:47:58,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5713 conditions, 2761 events. 327/2761 cut-off events. For 2029/2031 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 20695 event pairs, 2 based on Foata normal form. 0/2517 useless extension candidates. Maximal degree in co-relation 5045. Up to 267 conditions per place. [2022-09-16 11:47:58,175 INFO L137 encePairwiseOnDemand]: 309/325 looper letters, 152 selfloop transitions, 49 changer transitions 0/501 dead transitions. [2022-09-16 11:47:58,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 501 transitions, 2670 flow [2022-09-16 11:47:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:47:58,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:47:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4841 transitions. [2022-09-16 11:47:58,178 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8275213675213675 [2022-09-16 11:47:58,178 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4841 transitions. [2022-09-16 11:47:58,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4841 transitions. [2022-09-16 11:47:58,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:58,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4841 transitions. [2022-09-16 11:47:58,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 268.94444444444446) internal successors, (4841), 18 states have internal predecessors, (4841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:58,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 325.0) internal successors, (6175), 19 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:58,187 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 325.0) internal successors, (6175), 19 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:58,187 INFO L175 Difference]: Start difference. First operand has 429 places, 378 transitions, 1661 flow. Second operand 18 states and 4841 transitions. [2022-09-16 11:47:58,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 501 transitions, 2670 flow [2022-09-16 11:47:58,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 501 transitions, 2660 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:58,204 INFO L231 Difference]: Finished difference. Result has 452 places, 408 transitions, 1964 flow [2022-09-16 11:47:58,204 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1964, PETRI_PLACES=452, PETRI_TRANSITIONS=408} [2022-09-16 11:47:58,204 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 164 predicate places. [2022-09-16 11:47:58,205 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 408 transitions, 1964 flow [2022-09-16 11:47:58,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 262.5) internal successors, (2100), 8 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:58,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:58,205 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 11:47:58,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:47:58,205 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:47:58,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:58,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2094540539, now seen corresponding path program 1 times [2022-09-16 11:47:58,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:58,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422199165] [2022-09-16 11:47:58,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:58,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:58,226 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 11:47:58,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:58,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422199165] [2022-09-16 11:47:58,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422199165] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:58,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:58,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:58,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583560900] [2022-09-16 11:47:58,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:58,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:58,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:58,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:58,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:58,228 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 325 [2022-09-16 11:47:58,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 408 transitions, 1964 flow. Second operand has 4 states, 4 states have (on average 286.75) internal successors, (1147), 4 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:58,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:58,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 325 [2022-09-16 11:47:58,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:00,403 INFO L130 PetriNetUnfolder]: 359/7390 cut-off events. [2022-09-16 11:48:00,403 INFO L131 PetriNetUnfolder]: For 5237/5237 co-relation queries the response was YES. [2022-09-16 11:48:00,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12749 conditions, 7390 events. 359/7390 cut-off events. For 5237/5237 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 72213 event pairs, 84 based on Foata normal form. 24/6617 useless extension candidates. Maximal degree in co-relation 12365. Up to 298 conditions per place. [2022-09-16 11:48:00,738 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 37 selfloop transitions, 7 changer transitions 0/421 dead transitions. [2022-09-16 11:48:00,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 421 transitions, 2091 flow [2022-09-16 11:48:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:48:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:48:00,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1180 transitions. [2022-09-16 11:48:00,739 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9076923076923077 [2022-09-16 11:48:00,740 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1180 transitions. [2022-09-16 11:48:00,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1180 transitions. [2022-09-16 11:48:00,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:00,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1180 transitions. [2022-09-16 11:48:00,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:00,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:00,742 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:00,742 INFO L175 Difference]: Start difference. First operand has 452 places, 408 transitions, 1964 flow. Second operand 4 states and 1180 transitions. [2022-09-16 11:48:00,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 421 transitions, 2091 flow [2022-09-16 11:48:00,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 421 transitions, 2063 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-09-16 11:48:00,768 INFO L231 Difference]: Finished difference. Result has 456 places, 411 transitions, 1992 flow [2022-09-16 11:48:00,769 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1992, PETRI_PLACES=456, PETRI_TRANSITIONS=411} [2022-09-16 11:48:00,769 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 168 predicate places. [2022-09-16 11:48:00,769 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 411 transitions, 1992 flow [2022-09-16 11:48:00,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.75) internal successors, (1147), 4 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:00,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:00,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:00,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:48:00,770 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:48:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:00,770 INFO L85 PathProgramCache]: Analyzing trace with hash -471827992, now seen corresponding path program 1 times [2022-09-16 11:48:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:00,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197812550] [2022-09-16 11:48:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:00,798 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 11:48:00,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:00,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197812550] [2022-09-16 11:48:00,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197812550] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:00,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:00,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:48:00,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650864701] [2022-09-16 11:48:00,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:00,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:48:00,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:00,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:48:00,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:48:00,800 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 325 [2022-09-16 11:48:00,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 411 transitions, 1992 flow. Second operand has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:00,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:00,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 325 [2022-09-16 11:48:00,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:03,010 INFO L130 PetriNetUnfolder]: 310/5110 cut-off events. [2022-09-16 11:48:03,011 INFO L131 PetriNetUnfolder]: For 4700/4702 co-relation queries the response was YES. [2022-09-16 11:48:03,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10585 conditions, 5110 events. 310/5110 cut-off events. For 4700/4702 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 45219 event pairs, 1 based on Foata normal form. 2/4779 useless extension candidates. Maximal degree in co-relation 9910. Up to 297 conditions per place. [2022-09-16 11:48:03,421 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 79 selfloop transitions, 22 changer transitions 0/460 dead transitions. [2022-09-16 11:48:03,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 460 transitions, 2430 flow [2022-09-16 11:48:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:48:03,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:48:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2310 transitions. [2022-09-16 11:48:03,423 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8884615384615384 [2022-09-16 11:48:03,423 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2310 transitions. [2022-09-16 11:48:03,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2310 transitions. [2022-09-16 11:48:03,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:03,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2310 transitions. [2022-09-16 11:48:03,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 288.75) internal successors, (2310), 8 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:03,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:03,427 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:03,427 INFO L175 Difference]: Start difference. First operand has 456 places, 411 transitions, 1992 flow. Second operand 8 states and 2310 transitions. [2022-09-16 11:48:03,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 460 transitions, 2430 flow [2022-09-16 11:48:03,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 460 transitions, 2430 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:48:03,455 INFO L231 Difference]: Finished difference. Result has 469 places, 427 transitions, 2228 flow [2022-09-16 11:48:03,455 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1992, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2228, PETRI_PLACES=469, PETRI_TRANSITIONS=427} [2022-09-16 11:48:03,456 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 181 predicate places. [2022-09-16 11:48:03,456 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 427 transitions, 2228 flow [2022-09-16 11:48:03,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:03,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:03,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:03,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:48:03,456 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:48:03,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:03,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2029002854, now seen corresponding path program 1 times [2022-09-16 11:48:03,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:03,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454935850] [2022-09-16 11:48:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:03,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:03,496 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 11:48:03,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:03,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454935850] [2022-09-16 11:48:03,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454935850] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:03,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:03,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:48:03,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530116115] [2022-09-16 11:48:03,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:03,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:48:03,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:48:03,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:48:03,498 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 325 [2022-09-16 11:48:03,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 427 transitions, 2228 flow. Second operand has 8 states, 8 states have (on average 262.625) internal successors, (2101), 8 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:03,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:03,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 325 [2022-09-16 11:48:03,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:17,275 INFO L130 PetriNetUnfolder]: 9665/40990 cut-off events. [2022-09-16 11:48:17,276 INFO L131 PetriNetUnfolder]: For 39841/39972 co-relation queries the response was YES. [2022-09-16 11:48:18,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81634 conditions, 40990 events. 9665/40990 cut-off events. For 39841/39972 co-relation queries the response was YES. Maximal size of possible extension queue 7613. Compared 713359 event pairs, 66 based on Foata normal form. 0/29854 useless extension candidates. Maximal degree in co-relation 81458. Up to 8943 conditions per place. [2022-09-16 11:48:18,523 INFO L137 encePairwiseOnDemand]: 309/325 looper letters, 147 selfloop transitions, 41 changer transitions 0/541 dead transitions. [2022-09-16 11:48:18,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 541 transitions, 3134 flow [2022-09-16 11:48:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:48:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:48:18,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4839 transitions. [2022-09-16 11:48:18,528 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8271794871794872 [2022-09-16 11:48:18,528 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4839 transitions. [2022-09-16 11:48:18,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4839 transitions. [2022-09-16 11:48:18,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:18,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4839 transitions. [2022-09-16 11:48:18,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 268.8333333333333) internal successors, (4839), 18 states have internal predecessors, (4839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:18,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 325.0) internal successors, (6175), 19 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:18,537 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 325.0) internal successors, (6175), 19 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:18,537 INFO L175 Difference]: Start difference. First operand has 469 places, 427 transitions, 2228 flow. Second operand 18 states and 4839 transitions. [2022-09-16 11:48:18,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 541 transitions, 3134 flow [2022-09-16 11:48:18,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 541 transitions, 3124 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-16 11:48:18,635 INFO L231 Difference]: Finished difference. Result has 491 places, 453 transitions, 2473 flow [2022-09-16 11:48:18,636 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2473, PETRI_PLACES=491, PETRI_TRANSITIONS=453} [2022-09-16 11:48:18,636 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 203 predicate places. [2022-09-16 11:48:18,636 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 453 transitions, 2473 flow [2022-09-16 11:48:18,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 262.625) internal successors, (2101), 8 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:18,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:18,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:18,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:48:18,637 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:48:18,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:18,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1525421941, now seen corresponding path program 1 times [2022-09-16 11:48:18,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:18,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959058627] [2022-09-16 11:48:18,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:18,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:18,670 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 11:48:18,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:18,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959058627] [2022-09-16 11:48:18,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959058627] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:18,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:18,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:48:18,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747379297] [2022-09-16 11:48:18,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:18,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:48:18,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:18,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:48:18,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:48:18,674 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 325 [2022-09-16 11:48:18,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 453 transitions, 2473 flow. Second operand has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:18,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:18,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 325 [2022-09-16 11:48:18,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:35,979 INFO L130 PetriNetUnfolder]: 6833/52548 cut-off events. [2022-09-16 11:48:35,979 INFO L131 PetriNetUnfolder]: For 49003/49035 co-relation queries the response was YES. [2022-09-16 11:48:37,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100186 conditions, 52548 events. 6833/52548 cut-off events. For 49003/49035 co-relation queries the response was YES. Maximal size of possible extension queue 4872. Compared 956534 event pairs, 2772 based on Foata normal form. 408/43049 useless extension candidates. Maximal degree in co-relation 100004. Up to 6106 conditions per place. [2022-09-16 11:48:37,889 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 36 selfloop transitions, 7 changer transitions 0/465 dead transitions. [2022-09-16 11:48:37,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 465 transitions, 2593 flow [2022-09-16 11:48:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:48:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:48:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1179 transitions. [2022-09-16 11:48:37,890 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9069230769230769 [2022-09-16 11:48:37,890 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1179 transitions. [2022-09-16 11:48:37,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1179 transitions. [2022-09-16 11:48:37,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:37,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1179 transitions. [2022-09-16 11:48:37,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:37,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:37,892 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:37,892 INFO L175 Difference]: Start difference. First operand has 491 places, 453 transitions, 2473 flow. Second operand 4 states and 1179 transitions. [2022-09-16 11:48:37,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 465 transitions, 2593 flow [2022-09-16 11:48:38,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 465 transitions, 2573 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-09-16 11:48:38,306 INFO L231 Difference]: Finished difference. Result has 495 places, 456 transitions, 2509 flow [2022-09-16 11:48:38,307 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2509, PETRI_PLACES=495, PETRI_TRANSITIONS=456} [2022-09-16 11:48:38,307 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 207 predicate places. [2022-09-16 11:48:38,307 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 456 transitions, 2509 flow [2022-09-16 11:48:38,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:38,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:38,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:38,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 11:48:38,308 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:48:38,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:38,308 INFO L85 PathProgramCache]: Analyzing trace with hash -611390664, now seen corresponding path program 1 times [2022-09-16 11:48:38,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:38,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727472421] [2022-09-16 11:48:38,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:38,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:38,336 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 11:48:38,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:38,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727472421] [2022-09-16 11:48:38,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727472421] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:38,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:38,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:48:38,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540867651] [2022-09-16 11:48:38,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:38,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:48:38,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:38,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:48:38,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:48:38,338 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 325 [2022-09-16 11:48:38,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 456 transitions, 2509 flow. Second operand has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:38,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:38,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 325 [2022-09-16 11:48:38,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:08,179 INFO L130 PetriNetUnfolder]: 8396/79357 cut-off events. [2022-09-16 11:49:08,179 INFO L131 PetriNetUnfolder]: For 83840/83971 co-relation queries the response was YES. [2022-09-16 11:49:11,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163407 conditions, 79357 events. 8396/79357 cut-off events. For 83840/83971 co-relation queries the response was YES. Maximal size of possible extension queue 5964. Compared 1470441 event pairs, 33 based on Foata normal form. 34/68292 useless extension candidates. Maximal degree in co-relation 163217. Up to 7062 conditions per place. [2022-09-16 11:49:11,394 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 76 selfloop transitions, 22 changer transitions 0/502 dead transitions. [2022-09-16 11:49:11,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 502 transitions, 2927 flow [2022-09-16 11:49:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:49:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:49:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2307 transitions. [2022-09-16 11:49:11,397 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8873076923076924 [2022-09-16 11:49:11,397 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2307 transitions. [2022-09-16 11:49:11,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2307 transitions. [2022-09-16 11:49:11,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:11,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2307 transitions. [2022-09-16 11:49:11,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 288.375) internal successors, (2307), 8 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:11,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:11,400 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:11,400 INFO L175 Difference]: Start difference. First operand has 495 places, 456 transitions, 2509 flow. Second operand 8 states and 2307 transitions. [2022-09-16 11:49:11,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 502 transitions, 2927 flow [2022-09-16 11:49:11,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 502 transitions, 2927 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:49:11,759 INFO L231 Difference]: Finished difference. Result has 508 places, 472 transitions, 2745 flow [2022-09-16 11:49:11,759 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=2509, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2745, PETRI_PLACES=508, PETRI_TRANSITIONS=472} [2022-09-16 11:49:11,760 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 220 predicate places. [2022-09-16 11:49:11,760 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 472 transitions, 2745 flow [2022-09-16 11:49:11,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:11,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:11,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:11,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-16 11:49:11,760 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:49:11,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:11,761 INFO L85 PathProgramCache]: Analyzing trace with hash -892866691, now seen corresponding path program 1 times [2022-09-16 11:49:11,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:11,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722628259] [2022-09-16 11:49:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:11,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:11,813 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 11:49:11,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:11,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722628259] [2022-09-16 11:49:11,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722628259] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:11,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:11,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:49:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709490817] [2022-09-16 11:49:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:11,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:49:11,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:49:11,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:49:11,817 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 325 [2022-09-16 11:49:11,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 472 transitions, 2745 flow. Second operand has 8 states, 8 states have (on average 262.75) internal successors, (2102), 8 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:11,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:11,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 325 [2022-09-16 11:49:11,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:26,029 INFO L130 PetriNetUnfolder]: 898/8071 cut-off events. [2022-09-16 11:49:26,029 INFO L131 PetriNetUnfolder]: For 10200/10202 co-relation queries the response was YES. [2022-09-16 11:49:27,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19742 conditions, 8071 events. 898/8071 cut-off events. For 10200/10202 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 83461 event pairs, 5 based on Foata normal form. 0/7699 useless extension candidates. Maximal degree in co-relation 17335. Up to 918 conditions per place. [2022-09-16 11:49:28,130 INFO L137 encePairwiseOnDemand]: 313/325 looper letters, 150 selfloop transitions, 68 changer transitions 0/571 dead transitions. [2022-09-16 11:49:28,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 571 transitions, 3914 flow [2022-09-16 11:49:28,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 11:49:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-16 11:49:28,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3758 transitions. [2022-09-16 11:49:28,133 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8259340659340659 [2022-09-16 11:49:28,133 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3758 transitions. [2022-09-16 11:49:28,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3758 transitions. [2022-09-16 11:49:28,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:28,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3758 transitions. [2022-09-16 11:49:28,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 268.42857142857144) internal successors, (3758), 14 states have internal predecessors, (3758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:28,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 325.0) internal successors, (4875), 15 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:28,166 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 325.0) internal successors, (4875), 15 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:28,166 INFO L175 Difference]: Start difference. First operand has 508 places, 472 transitions, 2745 flow. Second operand 14 states and 3758 transitions. [2022-09-16 11:49:28,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 571 transitions, 3914 flow [2022-09-16 11:49:28,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 571 transitions, 3904 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-16 11:49:28,259 INFO L231 Difference]: Finished difference. Result has 524 places, 510 transitions, 3395 flow [2022-09-16 11:49:28,260 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=2735, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3395, PETRI_PLACES=524, PETRI_TRANSITIONS=510} [2022-09-16 11:49:28,260 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 236 predicate places. [2022-09-16 11:49:28,260 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 510 transitions, 3395 flow [2022-09-16 11:49:28,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 262.75) internal successors, (2102), 8 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:28,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:28,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:28,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 11:49:28,261 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:49:28,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash -542862377, now seen corresponding path program 1 times [2022-09-16 11:49:28,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:28,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820404047] [2022-09-16 11:49:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:28,292 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 11:49:28,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:28,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820404047] [2022-09-16 11:49:28,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820404047] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:28,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:28,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:49:28,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356218966] [2022-09-16 11:49:28,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:28,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:49:28,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:28,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:49:28,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:49:28,295 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 325 [2022-09-16 11:49:28,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 510 transitions, 3395 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:28,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:28,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 325 [2022-09-16 11:49:28,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:45,298 INFO L130 PetriNetUnfolder]: 560/19872 cut-off events. [2022-09-16 11:49:45,298 INFO L131 PetriNetUnfolder]: For 23964/23964 co-relation queries the response was YES. [2022-09-16 11:49:47,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41630 conditions, 19872 events. 560/19872 cut-off events. For 23964/23964 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 244435 event pairs, 68 based on Foata normal form. 4/18743 useless extension candidates. Maximal degree in co-relation 40311. Up to 903 conditions per place. [2022-09-16 11:49:47,348 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 55 selfloop transitions, 17 changer transitions 0/519 dead transitions. [2022-09-16 11:49:47,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 519 transitions, 3556 flow [2022-09-16 11:49:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:49:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:49:47,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1178 transitions. [2022-09-16 11:49:47,350 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9061538461538462 [2022-09-16 11:49:47,350 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1178 transitions. [2022-09-16 11:49:47,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1178 transitions. [2022-09-16 11:49:47,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:47,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1178 transitions. [2022-09-16 11:49:47,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 294.5) internal successors, (1178), 4 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:47,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:47,352 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:47,352 INFO L175 Difference]: Start difference. First operand has 524 places, 510 transitions, 3395 flow. Second operand 4 states and 1178 transitions. [2022-09-16 11:49:47,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 519 transitions, 3556 flow [2022-09-16 11:49:47,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 519 transitions, 3510 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-09-16 11:49:47,464 INFO L231 Difference]: Finished difference. Result has 523 places, 509 transitions, 3375 flow [2022-09-16 11:49:47,465 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=3341, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3375, PETRI_PLACES=523, PETRI_TRANSITIONS=509} [2022-09-16 11:49:47,465 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 235 predicate places. [2022-09-16 11:49:47,465 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 509 transitions, 3375 flow [2022-09-16 11:49:47,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:47,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:47,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:47,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-16 11:49:47,466 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:49:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:47,466 INFO L85 PathProgramCache]: Analyzing trace with hash 965260489, now seen corresponding path program 1 times [2022-09-16 11:49:47,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:47,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814831970] [2022-09-16 11:49:47,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:47,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:47,509 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 11:49:47,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:47,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814831970] [2022-09-16 11:49:47,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814831970] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:47,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:47,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:49:47,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696986175] [2022-09-16 11:49:47,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:47,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:49:47,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:47,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:49:47,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:49:47,511 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 325 [2022-09-16 11:49:47,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 509 transitions, 3375 flow. Second operand has 6 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:47,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:47,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 325 [2022-09-16 11:49:47,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:58,456 INFO L130 PetriNetUnfolder]: 361/7556 cut-off events. [2022-09-16 11:49:58,457 INFO L131 PetriNetUnfolder]: For 11848/11850 co-relation queries the response was YES. [2022-09-16 11:49:59,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17179 conditions, 7556 events. 361/7556 cut-off events. For 11848/11850 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 76426 event pairs, 1 based on Foata normal form. 2/7189 useless extension candidates. Maximal degree in co-relation 15627. Up to 466 conditions per place. [2022-09-16 11:50:00,082 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 88 selfloop transitions, 38 changer transitions 0/534 dead transitions. [2022-09-16 11:50:00,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 534 transitions, 3777 flow [2022-09-16 11:50:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:50:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:50:00,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2300 transitions. [2022-09-16 11:50:00,085 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2022-09-16 11:50:00,085 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2300 transitions. [2022-09-16 11:50:00,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2300 transitions. [2022-09-16 11:50:00,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:00,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2300 transitions. [2022-09-16 11:50:00,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 287.5) internal successors, (2300), 8 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:00,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:00,089 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:00,089 INFO L175 Difference]: Start difference. First operand has 523 places, 509 transitions, 3375 flow. Second operand 8 states and 2300 transitions. [2022-09-16 11:50:00,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 534 transitions, 3777 flow [2022-09-16 11:50:00,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 534 transitions, 3749 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:00,156 INFO L231 Difference]: Finished difference. Result has 531 places, 515 transitions, 3583 flow [2022-09-16 11:50:00,156 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=3356, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3583, PETRI_PLACES=531, PETRI_TRANSITIONS=515} [2022-09-16 11:50:00,157 INFO L287 CegarLoopForPetriNet]: 288 programPoint places, 243 predicate places. [2022-09-16 11:50:00,157 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 515 transitions, 3583 flow [2022-09-16 11:50:00,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:00,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:00,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:00,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-16 11:50:00,157 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:50:00,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:00,158 INFO L85 PathProgramCache]: Analyzing trace with hash -985008587, now seen corresponding path program 1 times [2022-09-16 11:50:00,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:00,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192289691] [2022-09-16 11:50:00,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:00,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:00,180 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 11:50:00,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:00,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192289691] [2022-09-16 11:50:00,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192289691] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:00,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:00,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:00,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360386468] [2022-09-16 11:50:00,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:00,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:00,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:00,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:00,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:00,182 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 325 [2022-09-16 11:50:00,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 515 transitions, 3583 flow. Second operand has 4 states, 4 states have (on average 287.5) internal successors, (1150), 4 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:00,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:00,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 325 [2022-09-16 11:50:00,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand