/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/chl-match-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:44:40,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:44:40,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:44:40,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:44:40,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:44:40,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:44:40,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:44:40,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:44:40,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:44:40,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:44:40,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:44:40,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:44:40,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:44:40,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:44:40,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:44:40,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:44:40,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:44:40,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:44:40,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:44:40,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:44:40,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:44:40,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:44:40,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:44:40,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:44:40,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:44:40,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:44:40,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:44:40,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:44:40,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:44:40,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:44:40,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:44:40,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:44:40,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:44:40,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:44:40,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:44:40,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:44:40,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:44:40,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:44:40,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:44:40,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:44:40,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:44:40,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:44:40,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:44:40,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:44:40,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:44:40,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:44:40,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:44:40,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:44:40,896 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:44:40,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:44:40,896 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:44:40,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:44:40,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:44:40,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:44:40,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:44:40,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:44:40,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:44:40,897 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:44:40,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:44:40,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:44:40,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:44:40,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:44:40,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:44:40,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:44:40,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:44:40,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:44:40,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:44:40,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:44:40,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:44:40,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:44:40,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:44:40,900 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:44:40,900 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:44:40,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:44:41,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:44:41,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:44:41,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:44:41,160 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:44:41,163 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:44:41,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-symm.wvr.c [2022-09-16 11:44:41,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f3063d2/275c8b298f9b4b61a57ccdd14d8f130e/FLAGd15a70215 [2022-09-16 11:44:41,649 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:44:41,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-symm.wvr.c [2022-09-16 11:44:41,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f3063d2/275c8b298f9b4b61a57ccdd14d8f130e/FLAGd15a70215 [2022-09-16 11:44:42,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f3063d2/275c8b298f9b4b61a57ccdd14d8f130e [2022-09-16 11:44:42,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:44:42,041 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:44:42,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:44:42,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:44:42,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:44:42,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:44:42" (1/1) ... [2022-09-16 11:44:42,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@334bd271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42, skipping insertion in model container [2022-09-16 11:44:42,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:44:42" (1/1) ... [2022-09-16 11:44:42,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:44:42,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:44:42,314 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-symm.wvr.c[2584,2597] [2022-09-16 11:44:42,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:44:42,332 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:44:42,369 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-symm.wvr.c[2584,2597] [2022-09-16 11:44:42,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:44:42,384 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:44:42,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42 WrapperNode [2022-09-16 11:44:42,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:44:42,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:44:42,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:44:42,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:44:42,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42" (1/1) ... [2022-09-16 11:44:42,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42" (1/1) ... [2022-09-16 11:44:42,454 INFO L138 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 236 [2022-09-16 11:44:42,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:44:42,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:44:42,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:44:42,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:44:42,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42" (1/1) ... [2022-09-16 11:44:42,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42" (1/1) ... [2022-09-16 11:44:42,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42" (1/1) ... [2022-09-16 11:44:42,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42" (1/1) ... [2022-09-16 11:44:42,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42" (1/1) ... [2022-09-16 11:44:42,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42" (1/1) ... [2022-09-16 11:44:42,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42" (1/1) ... [2022-09-16 11:44:42,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:44:42,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:44:42,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:44:42,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:44:42,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42" (1/1) ... [2022-09-16 11:44:42,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:44:42,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:44:42,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:44:42,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:44:42,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:44:42,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:44:42,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:44:42,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:44:42,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:44:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:44:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:44:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:44:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:44:42,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:44:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:44:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:44:42,601 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:44:42,715 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:44:42,717 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:44:43,112 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:44:43,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:44:43,124 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 11:44:43,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:44:43 BoogieIcfgContainer [2022-09-16 11:44:43,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:44:43,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:44:43,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:44:43,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:44:43,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:44:42" (1/3) ... [2022-09-16 11:44:43,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795cce3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:44:43, skipping insertion in model container [2022-09-16 11:44:43,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:42" (2/3) ... [2022-09-16 11:44:43,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795cce3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:44:43, skipping insertion in model container [2022-09-16 11:44:43,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:44:43" (3/3) ... [2022-09-16 11:44:43,136 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2022-09-16 11:44:43,151 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:44:43,152 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-09-16 11:44:43,152 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:44:43,319 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:44:43,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 339 transitions, 694 flow [2022-09-16 11:44:43,548 INFO L130 PetriNetUnfolder]: 27/337 cut-off events. [2022-09-16 11:44:43,548 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:44:43,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 337 events. 27/337 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 529 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 257. Up to 2 conditions per place. [2022-09-16 11:44:43,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 339 transitions, 694 flow [2022-09-16 11:44:43,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 302 transitions, 613 flow [2022-09-16 11:44:43,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:44:43,620 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;@3a399379, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:44:43,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-09-16 11:44:43,633 INFO L130 PetriNetUnfolder]: 0/65 cut-off events. [2022-09-16 11:44:43,633 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:44:43,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:43,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:43,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:43,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:43,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1657363069, now seen corresponding path program 1 times [2022-09-16 11:44:43,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:43,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505893797] [2022-09-16 11:44:43,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:43,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:43,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:43,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505893797] [2022-09-16 11:44:43,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505893797] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:43,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:43,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:43,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683562344] [2022-09-16 11:44:43,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:43,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:43,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:43,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:44,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:44,014 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 339 [2022-09-16 11:44:44,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 302 transitions, 613 flow. Second operand has 6 states, 6 states have (on average 278.8333333333333) internal successors, (1673), 6 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:44,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 339 [2022-09-16 11:44:44,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:44,369 INFO L130 PetriNetUnfolder]: 125/743 cut-off events. [2022-09-16 11:44:44,369 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-09-16 11:44:44,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065 conditions, 743 events. 125/743 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4576 event pairs, 27 based on Foata normal form. 161/774 useless extension candidates. Maximal degree in co-relation 985. Up to 81 conditions per place. [2022-09-16 11:44:44,385 INFO L137 encePairwiseOnDemand]: 321/339 looper letters, 51 selfloop transitions, 9 changer transitions 0/305 dead transitions. [2022-09-16 11:44:44,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 305 transitions, 751 flow [2022-09-16 11:44:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2021 transitions. [2022-09-16 11:44:44,406 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8516645596291614 [2022-09-16 11:44:44,407 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2021 transitions. [2022-09-16 11:44:44,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2021 transitions. [2022-09-16 11:44:44,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:44,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2021 transitions. [2022-09-16 11:44:44,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.7142857142857) internal successors, (2021), 7 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,439 INFO L175 Difference]: Start difference. First operand has 285 places, 302 transitions, 613 flow. Second operand 7 states and 2021 transitions. [2022-09-16 11:44:44,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 305 transitions, 751 flow [2022-09-16 11:44:44,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 305 transitions, 741 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:44:44,456 INFO L231 Difference]: Finished difference. Result has 287 places, 293 transitions, 608 flow [2022-09-16 11:44:44,458 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=608, PETRI_PLACES=287, PETRI_TRANSITIONS=293} [2022-09-16 11:44:44,464 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 2 predicate places. [2022-09-16 11:44:44,464 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 293 transitions, 608 flow [2022-09-16 11:44:44,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 278.8333333333333) internal successors, (1673), 6 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:44,466 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] [2022-09-16 11:44:44,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:44:44,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:44,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:44,468 INFO L85 PathProgramCache]: Analyzing trace with hash -161351581, now seen corresponding path program 1 times [2022-09-16 11:44:44,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:44,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827123906] [2022-09-16 11:44:44,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:44,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:44,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:44,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827123906] [2022-09-16 11:44:44,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827123906] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:44,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:44,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:44,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816689479] [2022-09-16 11:44:44,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:44,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:44,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:44,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:44,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:44,556 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 339 [2022-09-16 11:44:44,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 293 transitions, 608 flow. Second operand has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:44,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 339 [2022-09-16 11:44:44,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:44,756 INFO L130 PetriNetUnfolder]: 103/729 cut-off events. [2022-09-16 11:44:44,756 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-09-16 11:44:44,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 729 events. 103/729 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3749 event pairs, 30 based on Foata normal form. 4/626 useless extension candidates. Maximal degree in co-relation 452. Up to 99 conditions per place. [2022-09-16 11:44:44,774 INFO L137 encePairwiseOnDemand]: 326/339 looper letters, 59 selfloop transitions, 9 changer transitions 0/313 dead transitions. [2022-09-16 11:44:44,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 313 transitions, 789 flow [2022-09-16 11:44:44,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:44,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1180 transitions. [2022-09-16 11:44:44,779 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8702064896755162 [2022-09-16 11:44:44,779 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1180 transitions. [2022-09-16 11:44:44,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1180 transitions. [2022-09-16 11:44:44,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:44,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1180 transitions. [2022-09-16 11:44:44,783 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 11:44:44,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 339.0) internal successors, (1695), 5 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 11:44:44,787 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 339.0) internal successors, (1695), 5 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 11:44:44,787 INFO L175 Difference]: Start difference. First operand has 287 places, 293 transitions, 608 flow. Second operand 4 states and 1180 transitions. [2022-09-16 11:44:44,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 313 transitions, 789 flow [2022-09-16 11:44:44,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 313 transitions, 771 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:44:44,798 INFO L231 Difference]: Finished difference. Result has 285 places, 296 transitions, 646 flow [2022-09-16 11:44:44,798 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=646, PETRI_PLACES=285, PETRI_TRANSITIONS=296} [2022-09-16 11:44:44,800 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 0 predicate places. [2022-09-16 11:44:44,800 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 296 transitions, 646 flow [2022-09-16 11:44:44,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:44,801 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] [2022-09-16 11:44:44,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:44:44,802 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:44,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:44,802 INFO L85 PathProgramCache]: Analyzing trace with hash 2037043467, now seen corresponding path program 1 times [2022-09-16 11:44:44,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:44,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654779346] [2022-09-16 11:44:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:44,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:44,872 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 11:44:44,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:44,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654779346] [2022-09-16 11:44:44,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654779346] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:44,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:44,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:44,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063198449] [2022-09-16 11:44:44,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:44,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:44,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:44,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:44,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:44,877 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 339 [2022-09-16 11:44:44,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 296 transitions, 646 flow. Second operand has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:44,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 339 [2022-09-16 11:44:44,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:45,208 INFO L130 PetriNetUnfolder]: 245/1354 cut-off events. [2022-09-16 11:44:45,208 INFO L131 PetriNetUnfolder]: For 95/97 co-relation queries the response was YES. [2022-09-16 11:44:45,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1354 events. 245/1354 cut-off events. For 95/97 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 10810 event pairs, 30 based on Foata normal form. 0/1041 useless extension candidates. Maximal degree in co-relation 1566. Up to 145 conditions per place. [2022-09-16 11:44:45,227 INFO L137 encePairwiseOnDemand]: 329/339 looper letters, 50 selfloop transitions, 9 changer transitions 0/306 dead transitions. [2022-09-16 11:44:45,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 306 transitions, 787 flow [2022-09-16 11:44:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2022-09-16 11:44:45,232 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.842393594605984 [2022-09-16 11:44:45,232 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2022-09-16 11:44:45,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2022-09-16 11:44:45,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:45,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2022-09-16 11:44:45,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:45,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:45,244 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:45,244 INFO L175 Difference]: Start difference. First operand has 285 places, 296 transitions, 646 flow. Second operand 7 states and 1999 transitions. [2022-09-16 11:44:45,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 306 transitions, 787 flow [2022-09-16 11:44:45,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 306 transitions, 787 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:44:45,251 INFO L231 Difference]: Finished difference. Result has 290 places, 295 transitions, 662 flow [2022-09-16 11:44:45,252 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=662, PETRI_PLACES=290, PETRI_TRANSITIONS=295} [2022-09-16 11:44:45,254 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 5 predicate places. [2022-09-16 11:44:45,254 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 295 transitions, 662 flow [2022-09-16 11:44:45,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:45,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:45,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:45,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:44:45,257 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:45,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:45,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1276161008, now seen corresponding path program 1 times [2022-09-16 11:44:45,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:45,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088105082] [2022-09-16 11:44:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:45,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:45,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:45,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088105082] [2022-09-16 11:44:45,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088105082] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:45,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:45,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:45,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359834372] [2022-09-16 11:44:45,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:45,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:45,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:45,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:45,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:45,339 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 339 [2022-09-16 11:44:45,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 295 transitions, 662 flow. Second operand has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:45,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:45,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 339 [2022-09-16 11:44:45,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:45,669 INFO L130 PetriNetUnfolder]: 187/1118 cut-off events. [2022-09-16 11:44:45,670 INFO L131 PetriNetUnfolder]: For 150/152 co-relation queries the response was YES. [2022-09-16 11:44:45,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1505 conditions, 1118 events. 187/1118 cut-off events. For 150/152 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7834 event pairs, 14 based on Foata normal form. 6/848 useless extension candidates. Maximal degree in co-relation 1441. Up to 161 conditions per place. [2022-09-16 11:44:45,689 INFO L137 encePairwiseOnDemand]: 326/339 looper letters, 58 selfloop transitions, 9 changer transitions 0/314 dead transitions. [2022-09-16 11:44:45,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 314 transitions, 836 flow [2022-09-16 11:44:45,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1179 transitions. [2022-09-16 11:44:45,692 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8694690265486725 [2022-09-16 11:44:45,692 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1179 transitions. [2022-09-16 11:44:45,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1179 transitions. [2022-09-16 11:44:45,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:45,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1179 transitions. [2022-09-16 11:44:45,696 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 11:44:45,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 339.0) internal successors, (1695), 5 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 11:44:45,702 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 339.0) internal successors, (1695), 5 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 11:44:45,702 INFO L175 Difference]: Start difference. First operand has 290 places, 295 transitions, 662 flow. Second operand 4 states and 1179 transitions. [2022-09-16 11:44:45,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 314 transitions, 836 flow [2022-09-16 11:44:45,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 314 transitions, 818 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:44:45,710 INFO L231 Difference]: Finished difference. Result has 288 places, 298 transitions, 700 flow [2022-09-16 11:44:45,711 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=700, PETRI_PLACES=288, PETRI_TRANSITIONS=298} [2022-09-16 11:44:45,713 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 3 predicate places. [2022-09-16 11:44:45,713 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 298 transitions, 700 flow [2022-09-16 11:44:45,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:45,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:45,715 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] [2022-09-16 11:44:45,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:44:45,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:45,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:45,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1409849034, now seen corresponding path program 1 times [2022-09-16 11:44:45,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:45,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690510139] [2022-09-16 11:44:45,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:45,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:45,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:45,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690510139] [2022-09-16 11:44:45,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690510139] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:45,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:45,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:45,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825115555] [2022-09-16 11:44:45,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:45,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:45,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:45,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:45,821 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 339 [2022-09-16 11:44:45,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 298 transitions, 700 flow. Second operand has 4 states, 4 states have (on average 279.25) internal successors, (1117), 4 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:45,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:45,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 339 [2022-09-16 11:44:45,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:46,046 INFO L130 PetriNetUnfolder]: 92/718 cut-off events. [2022-09-16 11:44:46,046 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-09-16 11:44:46,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 718 events. 92/718 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3605 event pairs, 24 based on Foata normal form. 4/628 useless extension candidates. Maximal degree in co-relation 899. Up to 78 conditions per place. [2022-09-16 11:44:46,067 INFO L137 encePairwiseOnDemand]: 330/339 looper letters, 59 selfloop transitions, 7 changer transitions 0/313 dead transitions. [2022-09-16 11:44:46,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 313 transitions, 859 flow [2022-09-16 11:44:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:46,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1176 transitions. [2022-09-16 11:44:46,071 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8672566371681416 [2022-09-16 11:44:46,071 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1176 transitions. [2022-09-16 11:44:46,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1176 transitions. [2022-09-16 11:44:46,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:46,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1176 transitions. [2022-09-16 11:44:46,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 339.0) internal successors, (1695), 5 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 11:44:46,077 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 339.0) internal successors, (1695), 5 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 11:44:46,077 INFO L175 Difference]: Start difference. First operand has 288 places, 298 transitions, 700 flow. Second operand 4 states and 1176 transitions. [2022-09-16 11:44:46,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 313 transitions, 859 flow [2022-09-16 11:44:46,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 313 transitions, 854 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:46,087 INFO L231 Difference]: Finished difference. Result has 290 places, 296 transitions, 697 flow [2022-09-16 11:44:46,088 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=697, PETRI_PLACES=290, PETRI_TRANSITIONS=296} [2022-09-16 11:44:46,090 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 5 predicate places. [2022-09-16 11:44:46,091 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 296 transitions, 697 flow [2022-09-16 11:44:46,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.25) internal successors, (1117), 4 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:46,092 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 11:44:46,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:44:46,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:46,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:46,093 INFO L85 PathProgramCache]: Analyzing trace with hash 755647943, now seen corresponding path program 1 times [2022-09-16 11:44:46,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:46,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031033202] [2022-09-16 11:44:46,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:46,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:46,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:46,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031033202] [2022-09-16 11:44:46,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031033202] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:46,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:46,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:46,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505330701] [2022-09-16 11:44:46,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:46,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:46,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:46,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:46,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:46,161 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 339 [2022-09-16 11:44:46,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 296 transitions, 697 flow. Second operand has 6 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:46,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 339 [2022-09-16 11:44:46,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:46,587 INFO L130 PetriNetUnfolder]: 297/2375 cut-off events. [2022-09-16 11:44:46,588 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-09-16 11:44:46,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3086 conditions, 2375 events. 297/2375 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 19260 event pairs, 47 based on Foata normal form. 0/1968 useless extension candidates. Maximal degree in co-relation 2317. Up to 174 conditions per place. [2022-09-16 11:44:46,624 INFO L137 encePairwiseOnDemand]: 329/339 looper letters, 42 selfloop transitions, 10 changer transitions 0/301 dead transitions. [2022-09-16 11:44:46,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 301 transitions, 817 flow [2022-09-16 11:44:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1991 transitions. [2022-09-16 11:44:46,629 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8390223345975558 [2022-09-16 11:44:46,629 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1991 transitions. [2022-09-16 11:44:46,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1991 transitions. [2022-09-16 11:44:46,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:46,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1991 transitions. [2022-09-16 11:44:46,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.42857142857144) internal successors, (1991), 7 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,639 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,639 INFO L175 Difference]: Start difference. First operand has 290 places, 296 transitions, 697 flow. Second operand 7 states and 1991 transitions. [2022-09-16 11:44:46,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 301 transitions, 817 flow [2022-09-16 11:44:46,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 301 transitions, 806 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:46,651 INFO L231 Difference]: Finished difference. Result has 293 places, 295 transitions, 704 flow [2022-09-16 11:44:46,652 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=704, PETRI_PLACES=293, PETRI_TRANSITIONS=295} [2022-09-16 11:44:46,654 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 8 predicate places. [2022-09-16 11:44:46,655 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 295 transitions, 704 flow [2022-09-16 11:44:46,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:46,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:46,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:44:46,656 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:46,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:46,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1203555658, now seen corresponding path program 1 times [2022-09-16 11:44:46,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:46,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454913951] [2022-09-16 11:44:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:46,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:46,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:46,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454913951] [2022-09-16 11:44:46,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454913951] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:46,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:46,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:46,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045584557] [2022-09-16 11:44:46,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:46,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:44:46,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:46,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:44:46,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:44:46,737 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 339 [2022-09-16 11:44:46,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 295 transitions, 704 flow. Second operand has 5 states, 5 states have (on average 271.6) internal successors, (1358), 5 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:46,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 339 [2022-09-16 11:44:46,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:46,995 INFO L130 PetriNetUnfolder]: 107/755 cut-off events. [2022-09-16 11:44:46,995 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-09-16 11:44:47,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 755 events. 107/755 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4060 event pairs, 31 based on Foata normal form. 0/665 useless extension candidates. Maximal degree in co-relation 1021. Up to 103 conditions per place. [2022-09-16 11:44:47,017 INFO L137 encePairwiseOnDemand]: 324/339 looper letters, 68 selfloop transitions, 15 changer transitions 0/322 dead transitions. [2022-09-16 11:44:47,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 322 transitions, 927 flow [2022-09-16 11:44:47,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:44:47,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:44:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1699 transitions. [2022-09-16 11:44:47,022 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8352999016715831 [2022-09-16 11:44:47,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1699 transitions. [2022-09-16 11:44:47,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1699 transitions. [2022-09-16 11:44:47,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:47,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1699 transitions. [2022-09-16 11:44:47,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.1666666666667) internal successors, (1699), 6 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,030 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,030 INFO L175 Difference]: Start difference. First operand has 293 places, 295 transitions, 704 flow. Second operand 6 states and 1699 transitions. [2022-09-16 11:44:47,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 322 transitions, 927 flow [2022-09-16 11:44:47,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 322 transitions, 900 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-09-16 11:44:47,038 INFO L231 Difference]: Finished difference. Result has 292 places, 301 transitions, 749 flow [2022-09-16 11:44:47,039 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=749, PETRI_PLACES=292, PETRI_TRANSITIONS=301} [2022-09-16 11:44:47,039 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 7 predicate places. [2022-09-16 11:44:47,039 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 301 transitions, 749 flow [2022-09-16 11:44:47,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 271.6) internal successors, (1358), 5 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:47,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:47,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:44:47,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:47,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash -419683593, now seen corresponding path program 1 times [2022-09-16 11:44:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:47,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177344929] [2022-09-16 11:44:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:47,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:47,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:47,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177344929] [2022-09-16 11:44:47,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177344929] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:47,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:47,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:47,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604851009] [2022-09-16 11:44:47,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:47,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:47,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:47,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:47,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:47,079 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 339 [2022-09-16 11:44:47,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 301 transitions, 749 flow. Second operand has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:47,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 339 [2022-09-16 11:44:47,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:47,336 INFO L130 PetriNetUnfolder]: 158/982 cut-off events. [2022-09-16 11:44:47,336 INFO L131 PetriNetUnfolder]: For 208/210 co-relation queries the response was YES. [2022-09-16 11:44:47,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 982 events. 158/982 cut-off events. For 208/210 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6523 event pairs, 48 based on Foata normal form. 6/757 useless extension candidates. Maximal degree in co-relation 1337. Up to 128 conditions per place. [2022-09-16 11:44:47,356 INFO L137 encePairwiseOnDemand]: 330/339 looper letters, 58 selfloop transitions, 7 changer transitions 0/315 dead transitions. [2022-09-16 11:44:47,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 315 transitions, 901 flow [2022-09-16 11:44:47,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1175 transitions. [2022-09-16 11:44:47,359 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.866519174041298 [2022-09-16 11:44:47,359 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1175 transitions. [2022-09-16 11:44:47,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1175 transitions. [2022-09-16 11:44:47,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:47,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1175 transitions. [2022-09-16 11:44:47,362 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 11:44:47,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 339.0) internal successors, (1695), 5 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 11:44:47,398 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 339.0) internal successors, (1695), 5 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 11:44:47,399 INFO L175 Difference]: Start difference. First operand has 292 places, 301 transitions, 749 flow. Second operand 4 states and 1175 transitions. [2022-09-16 11:44:47,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 315 transitions, 901 flow [2022-09-16 11:44:47,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 315 transitions, 882 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-16 11:44:47,405 INFO L231 Difference]: Finished difference. Result has 291 places, 299 transitions, 732 flow [2022-09-16 11:44:47,405 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=732, PETRI_PLACES=291, PETRI_TRANSITIONS=299} [2022-09-16 11:44:47,406 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 6 predicate places. [2022-09-16 11:44:47,406 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 299 transitions, 732 flow [2022-09-16 11:44:47,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:47,407 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 11:44:47,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:44:47,408 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:47,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:47,408 INFO L85 PathProgramCache]: Analyzing trace with hash -125288523, now seen corresponding path program 1 times [2022-09-16 11:44:47,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:47,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395760096] [2022-09-16 11:44:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:47,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:47,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:47,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395760096] [2022-09-16 11:44:47,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395760096] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:47,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:47,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:47,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134118620] [2022-09-16 11:44:47,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:47,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:47,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:47,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:47,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:47,458 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 339 [2022-09-16 11:44:47,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 299 transitions, 732 flow. Second operand has 6 states, 6 states have (on average 279.3333333333333) internal successors, (1676), 6 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:47,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 339 [2022-09-16 11:44:47,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:47,780 INFO L130 PetriNetUnfolder]: 256/1467 cut-off events. [2022-09-16 11:44:47,781 INFO L131 PetriNetUnfolder]: For 177/179 co-relation queries the response was YES. [2022-09-16 11:44:47,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 1467 events. 256/1467 cut-off events. For 177/179 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 12390 event pairs, 86 based on Foata normal form. 0/1163 useless extension candidates. Maximal degree in co-relation 1233. Up to 212 conditions per place. [2022-09-16 11:44:47,807 INFO L137 encePairwiseOnDemand]: 329/339 looper letters, 42 selfloop transitions, 10 changer transitions 0/304 dead transitions. [2022-09-16 11:44:47,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 304 transitions, 849 flow [2022-09-16 11:44:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1991 transitions. [2022-09-16 11:44:47,814 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8390223345975558 [2022-09-16 11:44:47,814 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1991 transitions. [2022-09-16 11:44:47,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1991 transitions. [2022-09-16 11:44:47,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:47,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1991 transitions. [2022-09-16 11:44:47,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.42857142857144) internal successors, (1991), 7 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,830 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,831 INFO L175 Difference]: Start difference. First operand has 291 places, 299 transitions, 732 flow. Second operand 7 states and 1991 transitions. [2022-09-16 11:44:47,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 304 transitions, 849 flow [2022-09-16 11:44:47,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 304 transitions, 838 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:47,838 INFO L231 Difference]: Finished difference. Result has 294 places, 298 transitions, 739 flow [2022-09-16 11:44:47,838 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=739, PETRI_PLACES=294, PETRI_TRANSITIONS=298} [2022-09-16 11:44:47,839 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 9 predicate places. [2022-09-16 11:44:47,839 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 298 transitions, 739 flow [2022-09-16 11:44:47,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.3333333333333) internal successors, (1676), 6 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:47,842 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 11:44:47,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:44:47,842 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:47,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash -141165588, now seen corresponding path program 1 times [2022-09-16 11:44:47,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:47,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98306951] [2022-09-16 11:44:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:47,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:47,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:47,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98306951] [2022-09-16 11:44:47,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98306951] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:47,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:47,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:47,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334645859] [2022-09-16 11:44:47,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:47,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:47,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:47,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:47,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:47,915 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 339 [2022-09-16 11:44:47,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 298 transitions, 739 flow. Second operand has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:47,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 339 [2022-09-16 11:44:47,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:48,432 INFO L130 PetriNetUnfolder]: 359/2707 cut-off events. [2022-09-16 11:44:48,432 INFO L131 PetriNetUnfolder]: For 347/348 co-relation queries the response was YES. [2022-09-16 11:44:48,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3819 conditions, 2707 events. 359/2707 cut-off events. For 347/348 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 24118 event pairs, 75 based on Foata normal form. 1/2264 useless extension candidates. Maximal degree in co-relation 2929. Up to 160 conditions per place. [2022-09-16 11:44:48,468 INFO L137 encePairwiseOnDemand]: 324/339 looper letters, 62 selfloop transitions, 17 changer transitions 0/315 dead transitions. [2022-09-16 11:44:48,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 315 transitions, 959 flow [2022-09-16 11:44:48,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:44:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:44:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3010 transitions. [2022-09-16 11:44:48,505 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8071869133816036 [2022-09-16 11:44:48,505 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3010 transitions. [2022-09-16 11:44:48,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3010 transitions. [2022-09-16 11:44:48,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:48,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3010 transitions. [2022-09-16 11:44:48,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.6363636363636) internal successors, (3010), 11 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:48,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:48,521 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:48,521 INFO L175 Difference]: Start difference. First operand has 294 places, 298 transitions, 739 flow. Second operand 11 states and 3010 transitions. [2022-09-16 11:44:48,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 315 transitions, 959 flow [2022-09-16 11:44:48,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 315 transitions, 925 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:44:48,529 INFO L231 Difference]: Finished difference. Result has 300 places, 299 transitions, 768 flow [2022-09-16 11:44:48,531 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=768, PETRI_PLACES=300, PETRI_TRANSITIONS=299} [2022-09-16 11:44:48,532 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 15 predicate places. [2022-09-16 11:44:48,532 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 299 transitions, 768 flow [2022-09-16 11:44:48,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:48,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:48,533 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 11:44:48,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:44:48,533 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:48,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:48,534 INFO L85 PathProgramCache]: Analyzing trace with hash -81165071, now seen corresponding path program 1 times [2022-09-16 11:44:48,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:48,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815632246] [2022-09-16 11:44:48,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:48,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:48,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:48,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815632246] [2022-09-16 11:44:48,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815632246] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:48,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:48,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:48,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290139351] [2022-09-16 11:44:48,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:48,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:48,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:48,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:48,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:48,600 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 339 [2022-09-16 11:44:48,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 299 transitions, 768 flow. Second operand has 8 states, 8 states have (on average 269.125) internal successors, (2153), 8 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:48,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:48,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 339 [2022-09-16 11:44:48,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:48,978 INFO L130 PetriNetUnfolder]: 246/1415 cut-off events. [2022-09-16 11:44:48,979 INFO L131 PetriNetUnfolder]: For 201/201 co-relation queries the response was YES. [2022-09-16 11:44:48,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2277 conditions, 1415 events. 246/1415 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 11369 event pairs, 28 based on Foata normal form. 0/1193 useless extension candidates. Maximal degree in co-relation 1632. Up to 137 conditions per place. [2022-09-16 11:44:49,005 INFO L137 encePairwiseOnDemand]: 323/339 looper letters, 61 selfloop transitions, 16 changer transitions 0/317 dead transitions. [2022-09-16 11:44:49,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 317 transitions, 974 flow [2022-09-16 11:44:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:44:49,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:44:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3012 transitions. [2022-09-16 11:44:49,012 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8077232502011263 [2022-09-16 11:44:49,012 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3012 transitions. [2022-09-16 11:44:49,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3012 transitions. [2022-09-16 11:44:49,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:49,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3012 transitions. [2022-09-16 11:44:49,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.8181818181818) internal successors, (3012), 11 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,061 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,061 INFO L175 Difference]: Start difference. First operand has 300 places, 299 transitions, 768 flow. Second operand 11 states and 3012 transitions. [2022-09-16 11:44:49,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 317 transitions, 974 flow [2022-09-16 11:44:49,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 317 transitions, 951 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:44:49,068 INFO L231 Difference]: Finished difference. Result has 306 places, 300 transitions, 790 flow [2022-09-16 11:44:49,069 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=790, PETRI_PLACES=306, PETRI_TRANSITIONS=300} [2022-09-16 11:44:49,069 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 21 predicate places. [2022-09-16 11:44:49,070 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 300 transitions, 790 flow [2022-09-16 11:44:49,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 269.125) internal successors, (2153), 8 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:49,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:49,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:44:49,071 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash 732173080, now seen corresponding path program 1 times [2022-09-16 11:44:49,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:49,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077918779] [2022-09-16 11:44:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:49,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:49,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077918779] [2022-09-16 11:44:49,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077918779] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:49,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:49,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:49,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254543054] [2022-09-16 11:44:49,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:49,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:44:49,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:49,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:44:49,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:44:49,112 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 339 [2022-09-16 11:44:49,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 300 transitions, 790 flow. Second operand has 5 states, 5 states have (on average 271.8) internal successors, (1359), 5 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:49,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 339 [2022-09-16 11:44:49,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:49,423 INFO L130 PetriNetUnfolder]: 188/1050 cut-off events. [2022-09-16 11:44:49,424 INFO L131 PetriNetUnfolder]: For 227/229 co-relation queries the response was YES. [2022-09-16 11:44:49,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 1050 events. 188/1050 cut-off events. For 227/229 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7477 event pairs, 14 based on Foata normal form. 0/804 useless extension candidates. Maximal degree in co-relation 1501. Up to 169 conditions per place. [2022-09-16 11:44:49,443 INFO L137 encePairwiseOnDemand]: 324/339 looper letters, 67 selfloop transitions, 15 changer transitions 0/326 dead transitions. [2022-09-16 11:44:49,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 326 transitions, 1006 flow [2022-09-16 11:44:49,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:44:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:44:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1698 transitions. [2022-09-16 11:44:49,447 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8348082595870207 [2022-09-16 11:44:49,447 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1698 transitions. [2022-09-16 11:44:49,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1698 transitions. [2022-09-16 11:44:49,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:49,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1698 transitions. [2022-09-16 11:44:49,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,454 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,454 INFO L175 Difference]: Start difference. First operand has 306 places, 300 transitions, 790 flow. Second operand 6 states and 1698 transitions. [2022-09-16 11:44:49,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 326 transitions, 1006 flow [2022-09-16 11:44:49,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 326 transitions, 974 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-09-16 11:44:49,462 INFO L231 Difference]: Finished difference. Result has 305 places, 306 transitions, 832 flow [2022-09-16 11:44:49,462 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=832, PETRI_PLACES=305, PETRI_TRANSITIONS=306} [2022-09-16 11:44:49,463 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 20 predicate places. [2022-09-16 11:44:49,463 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 306 transitions, 832 flow [2022-09-16 11:44:49,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 271.8) internal successors, (1359), 5 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:49,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:49,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:44:49,464 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:49,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash -917246891, now seen corresponding path program 1 times [2022-09-16 11:44:49,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:49,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580361782] [2022-09-16 11:44:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:49,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:49,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:49,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:49,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580361782] [2022-09-16 11:44:49,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580361782] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:49,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:49,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:49,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160593251] [2022-09-16 11:44:49,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:49,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:49,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:49,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:49,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:49,527 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 339 [2022-09-16 11:44:49,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 306 transitions, 832 flow. Second operand has 6 states, 6 states have (on average 260.3333333333333) internal successors, (1562), 6 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:49,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 339 [2022-09-16 11:44:49,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:49,855 INFO L130 PetriNetUnfolder]: 138/795 cut-off events. [2022-09-16 11:44:49,856 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-09-16 11:44:49,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 795 events. 138/795 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4528 event pairs, 61 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 1404. Up to 188 conditions per place. [2022-09-16 11:44:49,872 INFO L137 encePairwiseOnDemand]: 322/339 looper letters, 73 selfloop transitions, 16 changer transitions 0/321 dead transitions. [2022-09-16 11:44:49,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 321 transitions, 1049 flow [2022-09-16 11:44:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:49,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1882 transitions. [2022-09-16 11:44:49,877 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7930889169827223 [2022-09-16 11:44:49,877 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1882 transitions. [2022-09-16 11:44:49,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1882 transitions. [2022-09-16 11:44:49,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:49,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1882 transitions. [2022-09-16 11:44:49,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 268.85714285714283) internal successors, (1882), 7 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,885 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,885 INFO L175 Difference]: Start difference. First operand has 305 places, 306 transitions, 832 flow. Second operand 7 states and 1882 transitions. [2022-09-16 11:44:49,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 321 transitions, 1049 flow [2022-09-16 11:44:49,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 321 transitions, 1031 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-16 11:44:49,893 INFO L231 Difference]: Finished difference. Result has 311 places, 314 transitions, 909 flow [2022-09-16 11:44:49,894 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=909, PETRI_PLACES=311, PETRI_TRANSITIONS=314} [2022-09-16 11:44:49,895 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 26 predicate places. [2022-09-16 11:44:49,895 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 314 transitions, 909 flow [2022-09-16 11:44:49,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.3333333333333) internal successors, (1562), 6 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:49,896 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 11:44:49,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:44:49,896 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:49,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:49,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1937818767, now seen corresponding path program 1 times [2022-09-16 11:44:49,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:49,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164185085] [2022-09-16 11:44:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:49,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:49,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:49,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164185085] [2022-09-16 11:44:49,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164185085] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:49,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:49,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:49,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767838941] [2022-09-16 11:44:49,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:49,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:49,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:49,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:49,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:49,969 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 339 [2022-09-16 11:44:49,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 314 transitions, 909 flow. Second operand has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:49,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 339 [2022-09-16 11:44:49,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:50,256 INFO L130 PetriNetUnfolder]: 132/785 cut-off events. [2022-09-16 11:44:50,257 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2022-09-16 11:44:50,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1601 conditions, 785 events. 132/785 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4400 event pairs, 48 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 1475. Up to 153 conditions per place. [2022-09-16 11:44:50,277 INFO L137 encePairwiseOnDemand]: 321/339 looper letters, 87 selfloop transitions, 19 changer transitions 0/342 dead transitions. [2022-09-16 11:44:50,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 342 transitions, 1224 flow [2022-09-16 11:44:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:50,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1896 transitions. [2022-09-16 11:44:50,281 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7989886219974716 [2022-09-16 11:44:50,282 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1896 transitions. [2022-09-16 11:44:50,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1896 transitions. [2022-09-16 11:44:50,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:50,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1896 transitions. [2022-09-16 11:44:50,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 270.85714285714283) internal successors, (1896), 7 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:50,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:50,290 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:50,290 INFO L175 Difference]: Start difference. First operand has 311 places, 314 transitions, 909 flow. Second operand 7 states and 1896 transitions. [2022-09-16 11:44:50,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 342 transitions, 1224 flow [2022-09-16 11:44:50,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 342 transitions, 1213 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:50,300 INFO L231 Difference]: Finished difference. Result has 319 places, 325 transitions, 1032 flow [2022-09-16 11:44:50,300 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1032, PETRI_PLACES=319, PETRI_TRANSITIONS=325} [2022-09-16 11:44:50,301 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 34 predicate places. [2022-09-16 11:44:50,301 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 325 transitions, 1032 flow [2022-09-16 11:44:50,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:50,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:50,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:50,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:44:50,302 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:50,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:50,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1742958970, now seen corresponding path program 1 times [2022-09-16 11:44:50,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:50,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854842147] [2022-09-16 11:44:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:50,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:50,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:50,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854842147] [2022-09-16 11:44:50,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854842147] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:50,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:50,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:50,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118848106] [2022-09-16 11:44:50,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:50,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:50,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:50,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:50,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:50,361 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 339 [2022-09-16 11:44:50,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 325 transitions, 1032 flow. Second operand has 8 states, 8 states have (on average 269.125) internal successors, (2153), 8 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:50,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:50,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 339 [2022-09-16 11:44:50,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:50,849 INFO L130 PetriNetUnfolder]: 338/1732 cut-off events. [2022-09-16 11:44:50,850 INFO L131 PetriNetUnfolder]: For 409/411 co-relation queries the response was YES. [2022-09-16 11:44:50,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 1732 events. 338/1732 cut-off events. For 409/411 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15614 event pairs, 64 based on Foata normal form. 0/1398 useless extension candidates. Maximal degree in co-relation 2470. Up to 185 conditions per place. [2022-09-16 11:44:50,877 INFO L137 encePairwiseOnDemand]: 324/339 looper letters, 62 selfloop transitions, 17 changer transitions 0/342 dead transitions. [2022-09-16 11:44:50,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 342 transitions, 1231 flow [2022-09-16 11:44:50,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:44:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:44:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3010 transitions. [2022-09-16 11:44:50,885 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8071869133816036 [2022-09-16 11:44:50,885 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3010 transitions. [2022-09-16 11:44:50,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3010 transitions. [2022-09-16 11:44:50,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:50,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3010 transitions. [2022-09-16 11:44:50,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.6363636363636) internal successors, (3010), 11 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:50,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:50,901 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:50,901 INFO L175 Difference]: Start difference. First operand has 319 places, 325 transitions, 1032 flow. Second operand 11 states and 3010 transitions. [2022-09-16 11:44:50,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 342 transitions, 1231 flow [2022-09-16 11:44:50,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 342 transitions, 1224 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:50,911 INFO L231 Difference]: Finished difference. Result has 330 places, 326 transitions, 1074 flow [2022-09-16 11:44:50,911 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1074, PETRI_PLACES=330, PETRI_TRANSITIONS=326} [2022-09-16 11:44:50,912 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 45 predicate places. [2022-09-16 11:44:50,912 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 326 transitions, 1074 flow [2022-09-16 11:44:50,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 269.125) internal successors, (2153), 8 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:50,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:50,913 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] [2022-09-16 11:44:50,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:44:50,913 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:50,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1802845794, now seen corresponding path program 1 times [2022-09-16 11:44:50,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:50,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423237889] [2022-09-16 11:44:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:50,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:50,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:50,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423237889] [2022-09-16 11:44:50,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423237889] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:50,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:50,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:50,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933848643] [2022-09-16 11:44:50,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:50,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:50,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:50,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:50,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:50,976 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 339 [2022-09-16 11:44:50,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 326 transitions, 1074 flow. Second operand has 8 states, 8 states have (on average 269.25) internal successors, (2154), 8 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:50,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:50,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 339 [2022-09-16 11:44:50,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:51,522 INFO L130 PetriNetUnfolder]: 343/2075 cut-off events. [2022-09-16 11:44:51,522 INFO L131 PetriNetUnfolder]: For 562/564 co-relation queries the response was YES. [2022-09-16 11:44:51,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 2075 events. 343/2075 cut-off events. For 562/564 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 18541 event pairs, 100 based on Foata normal form. 0/1754 useless extension candidates. Maximal degree in co-relation 3113. Up to 180 conditions per place. [2022-09-16 11:44:51,548 INFO L137 encePairwiseOnDemand]: 323/339 looper letters, 61 selfloop transitions, 16 changer transitions 0/344 dead transitions. [2022-09-16 11:44:51,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 344 transitions, 1273 flow [2022-09-16 11:44:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:44:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:44:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3012 transitions. [2022-09-16 11:44:51,553 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8077232502011263 [2022-09-16 11:44:51,553 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3012 transitions. [2022-09-16 11:44:51,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3012 transitions. [2022-09-16 11:44:51,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:51,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3012 transitions. [2022-09-16 11:44:51,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.8181818181818) internal successors, (3012), 11 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:51,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:51,569 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:51,570 INFO L175 Difference]: Start difference. First operand has 330 places, 326 transitions, 1074 flow. Second operand 11 states and 3012 transitions. [2022-09-16 11:44:51,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 344 transitions, 1273 flow [2022-09-16 11:44:51,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 344 transitions, 1250 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:44:51,581 INFO L231 Difference]: Finished difference. Result has 336 places, 327 transitions, 1096 flow [2022-09-16 11:44:51,582 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1096, PETRI_PLACES=336, PETRI_TRANSITIONS=327} [2022-09-16 11:44:51,582 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 51 predicate places. [2022-09-16 11:44:51,582 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 327 transitions, 1096 flow [2022-09-16 11:44:51,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 269.25) internal successors, (2154), 8 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:51,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:51,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:51,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:44:51,585 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:51,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:51,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1890008798, now seen corresponding path program 1 times [2022-09-16 11:44:51,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:51,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273201056] [2022-09-16 11:44:51,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:51,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:51,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:51,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273201056] [2022-09-16 11:44:51,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273201056] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:51,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:51,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:51,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438959508] [2022-09-16 11:44:51,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:51,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:51,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:51,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:51,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:51,660 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 339 [2022-09-16 11:44:51,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 327 transitions, 1096 flow. Second operand has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:51,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:51,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 339 [2022-09-16 11:44:51,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:52,018 INFO L130 PetriNetUnfolder]: 254/1105 cut-off events. [2022-09-16 11:44:52,019 INFO L131 PetriNetUnfolder]: For 463/465 co-relation queries the response was YES. [2022-09-16 11:44:52,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 1105 events. 254/1105 cut-off events. For 463/465 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 8574 event pairs, 122 based on Foata normal form. 6/841 useless extension candidates. Maximal degree in co-relation 1980. Up to 313 conditions per place. [2022-09-16 11:44:52,061 INFO L137 encePairwiseOnDemand]: 322/339 looper letters, 72 selfloop transitions, 16 changer transitions 1/342 dead transitions. [2022-09-16 11:44:52,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 342 transitions, 1308 flow [2022-09-16 11:44:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1882 transitions. [2022-09-16 11:44:52,065 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7930889169827223 [2022-09-16 11:44:52,065 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1882 transitions. [2022-09-16 11:44:52,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1882 transitions. [2022-09-16 11:44:52,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:52,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1882 transitions. [2022-09-16 11:44:52,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 268.85714285714283) internal successors, (1882), 7 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,074 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,074 INFO L175 Difference]: Start difference. First operand has 336 places, 327 transitions, 1096 flow. Second operand 7 states and 1882 transitions. [2022-09-16 11:44:52,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 342 transitions, 1308 flow [2022-09-16 11:44:52,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 342 transitions, 1281 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-09-16 11:44:52,083 INFO L231 Difference]: Finished difference. Result has 339 places, 335 transitions, 1164 flow [2022-09-16 11:44:52,083 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1164, PETRI_PLACES=339, PETRI_TRANSITIONS=335} [2022-09-16 11:44:52,084 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 54 predicate places. [2022-09-16 11:44:52,084 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 335 transitions, 1164 flow [2022-09-16 11:44:52,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:52,085 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 11:44:52,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:44:52,085 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:52,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:52,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2028666689, now seen corresponding path program 1 times [2022-09-16 11:44:52,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:52,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545495176] [2022-09-16 11:44:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:52,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:52,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:52,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545495176] [2022-09-16 11:44:52,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545495176] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:52,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:52,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:52,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509861033] [2022-09-16 11:44:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:52,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:52,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:52,164 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 339 [2022-09-16 11:44:52,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 335 transitions, 1164 flow. Second operand has 6 states, 6 states have (on average 260.6666666666667) internal successors, (1564), 6 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:52,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 339 [2022-09-16 11:44:52,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:52,600 INFO L130 PetriNetUnfolder]: 242/1087 cut-off events. [2022-09-16 11:44:52,600 INFO L131 PetriNetUnfolder]: For 535/537 co-relation queries the response was YES. [2022-09-16 11:44:52,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 1087 events. 242/1087 cut-off events. For 535/537 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 8300 event pairs, 96 based on Foata normal form. 3/859 useless extension candidates. Maximal degree in co-relation 2081. Up to 254 conditions per place. [2022-09-16 11:44:52,627 INFO L137 encePairwiseOnDemand]: 321/339 looper letters, 86 selfloop transitions, 19 changer transitions 1/363 dead transitions. [2022-09-16 11:44:52,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 363 transitions, 1474 flow [2022-09-16 11:44:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1896 transitions. [2022-09-16 11:44:52,631 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7989886219974716 [2022-09-16 11:44:52,631 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1896 transitions. [2022-09-16 11:44:52,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1896 transitions. [2022-09-16 11:44:52,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:52,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1896 transitions. [2022-09-16 11:44:52,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 270.85714285714283) internal successors, (1896), 7 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,641 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,641 INFO L175 Difference]: Start difference. First operand has 339 places, 335 transitions, 1164 flow. Second operand 7 states and 1896 transitions. [2022-09-16 11:44:52,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 363 transitions, 1474 flow [2022-09-16 11:44:52,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 363 transitions, 1463 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:52,652 INFO L231 Difference]: Finished difference. Result has 347 places, 346 transitions, 1287 flow [2022-09-16 11:44:52,653 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1287, PETRI_PLACES=347, PETRI_TRANSITIONS=346} [2022-09-16 11:44:52,654 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 62 predicate places. [2022-09-16 11:44:52,654 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 346 transitions, 1287 flow [2022-09-16 11:44:52,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.6666666666667) internal successors, (1564), 6 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:52,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:52,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:44:52,655 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:52,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:52,655 INFO L85 PathProgramCache]: Analyzing trace with hash -747040490, now seen corresponding path program 1 times [2022-09-16 11:44:52,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:52,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466603420] [2022-09-16 11:44:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:52,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:52,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:52,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466603420] [2022-09-16 11:44:52,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466603420] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:52,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:52,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:52,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048036873] [2022-09-16 11:44:52,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:52,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:52,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:52,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:52,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:52,704 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 339 [2022-09-16 11:44:52,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 346 transitions, 1287 flow. Second operand has 6 states, 6 states have (on average 280.1666666666667) internal successors, (1681), 6 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:52,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 339 [2022-09-16 11:44:52,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:53,033 INFO L130 PetriNetUnfolder]: 136/1021 cut-off events. [2022-09-16 11:44:53,033 INFO L131 PetriNetUnfolder]: For 439/439 co-relation queries the response was YES. [2022-09-16 11:44:53,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2071 conditions, 1021 events. 136/1021 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5947 event pairs, 30 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 1878. Up to 114 conditions per place. [2022-09-16 11:44:53,051 INFO L137 encePairwiseOnDemand]: 331/339 looper letters, 50 selfloop transitions, 8 changer transitions 0/355 dead transitions. [2022-09-16 11:44:53,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 355 transitions, 1439 flow [2022-09-16 11:44:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:53,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1991 transitions. [2022-09-16 11:44:53,054 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8390223345975558 [2022-09-16 11:44:53,054 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1991 transitions. [2022-09-16 11:44:53,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1991 transitions. [2022-09-16 11:44:53,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:53,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1991 transitions. [2022-09-16 11:44:53,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.42857142857144) internal successors, (1991), 7 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:53,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:53,061 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:53,061 INFO L175 Difference]: Start difference. First operand has 347 places, 346 transitions, 1287 flow. Second operand 7 states and 1991 transitions. [2022-09-16 11:44:53,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 355 transitions, 1439 flow [2022-09-16 11:44:53,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 355 transitions, 1432 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:53,071 INFO L231 Difference]: Finished difference. Result has 352 places, 347 transitions, 1310 flow [2022-09-16 11:44:53,072 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1310, PETRI_PLACES=352, PETRI_TRANSITIONS=347} [2022-09-16 11:44:53,072 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 67 predicate places. [2022-09-16 11:44:53,072 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 347 transitions, 1310 flow [2022-09-16 11:44:53,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 280.1666666666667) internal successors, (1681), 6 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:53,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:53,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:53,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:44:53,073 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:53,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:53,075 INFO L85 PathProgramCache]: Analyzing trace with hash 462718372, now seen corresponding path program 1 times [2022-09-16 11:44:53,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:53,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218173731] [2022-09-16 11:44:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:53,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:53,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:53,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218173731] [2022-09-16 11:44:53,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218173731] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:53,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:53,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:53,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835591742] [2022-09-16 11:44:53,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:53,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:53,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:53,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:53,126 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 339 [2022-09-16 11:44:53,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 347 transitions, 1310 flow. Second operand has 6 states, 6 states have (on average 280.3333333333333) internal successors, (1682), 6 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:53,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:53,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 339 [2022-09-16 11:44:53,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:53,591 INFO L130 PetriNetUnfolder]: 235/2162 cut-off events. [2022-09-16 11:44:53,591 INFO L131 PetriNetUnfolder]: For 1021/1021 co-relation queries the response was YES. [2022-09-16 11:44:53,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4100 conditions, 2162 events. 235/2162 cut-off events. For 1021/1021 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 16133 event pairs, 46 based on Foata normal form. 0/2002 useless extension candidates. Maximal degree in co-relation 3601. Up to 151 conditions per place. [2022-09-16 11:44:53,639 INFO L137 encePairwiseOnDemand]: 331/339 looper letters, 50 selfloop transitions, 8 changer transitions 0/356 dead transitions. [2022-09-16 11:44:53,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 356 transitions, 1459 flow [2022-09-16 11:44:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1991 transitions. [2022-09-16 11:44:53,642 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8390223345975558 [2022-09-16 11:44:53,642 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1991 transitions. [2022-09-16 11:44:53,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1991 transitions. [2022-09-16 11:44:53,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:53,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1991 transitions. [2022-09-16 11:44:53,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.42857142857144) internal successors, (1991), 7 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:53,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:53,650 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 339.0) internal successors, (2712), 8 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:53,650 INFO L175 Difference]: Start difference. First operand has 352 places, 347 transitions, 1310 flow. Second operand 7 states and 1991 transitions. [2022-09-16 11:44:53,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 356 transitions, 1459 flow [2022-09-16 11:44:53,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 356 transitions, 1453 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:44:53,666 INFO L231 Difference]: Finished difference. Result has 355 places, 348 transitions, 1334 flow [2022-09-16 11:44:53,667 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1334, PETRI_PLACES=355, PETRI_TRANSITIONS=348} [2022-09-16 11:44:53,667 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 70 predicate places. [2022-09-16 11:44:53,668 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 348 transitions, 1334 flow [2022-09-16 11:44:53,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 280.3333333333333) internal successors, (1682), 6 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:53,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:53,668 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 11:44:53,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:44:53,669 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:53,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:53,669 INFO L85 PathProgramCache]: Analyzing trace with hash 93311072, now seen corresponding path program 1 times [2022-09-16 11:44:53,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:53,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293734189] [2022-09-16 11:44:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:53,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:53,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:53,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293734189] [2022-09-16 11:44:53,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293734189] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:53,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:53,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:53,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873871525] [2022-09-16 11:44:53,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:53,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:53,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:53,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:53,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:53,722 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 339 [2022-09-16 11:44:53,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 348 transitions, 1334 flow. Second operand has 6 states, 6 states have (on average 280.5) internal successors, (1683), 6 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:53,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:53,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 339 [2022-09-16 11:44:53,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:54,018 INFO L130 PetriNetUnfolder]: 134/1026 cut-off events. [2022-09-16 11:44:54,019 INFO L131 PetriNetUnfolder]: For 492/492 co-relation queries the response was YES. [2022-09-16 11:44:54,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 1026 events. 134/1026 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6003 event pairs, 42 based on Foata normal form. 0/991 useless extension candidates. Maximal degree in co-relation 1883. Up to 111 conditions per place. [2022-09-16 11:44:54,045 INFO L137 encePairwiseOnDemand]: 333/339 looper letters, 47 selfloop transitions, 6 changer transitions 0/351 dead transitions. [2022-09-16 11:44:54,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 351 transitions, 1450 flow [2022-09-16 11:44:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:44:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:44:54,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1706 transitions. [2022-09-16 11:44:54,048 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8387413962635202 [2022-09-16 11:44:54,048 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1706 transitions. [2022-09-16 11:44:54,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1706 transitions. [2022-09-16 11:44:54,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:54,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1706 transitions. [2022-09-16 11:44:54,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 6 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,054 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,054 INFO L175 Difference]: Start difference. First operand has 355 places, 348 transitions, 1334 flow. Second operand 6 states and 1706 transitions. [2022-09-16 11:44:54,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 351 transitions, 1450 flow [2022-09-16 11:44:54,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 351 transitions, 1444 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:44:54,069 INFO L231 Difference]: Finished difference. Result has 356 places, 347 transitions, 1338 flow [2022-09-16 11:44:54,070 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1338, PETRI_PLACES=356, PETRI_TRANSITIONS=347} [2022-09-16 11:44:54,070 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 71 predicate places. [2022-09-16 11:44:54,070 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 347 transitions, 1338 flow [2022-09-16 11:44:54,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 280.5) internal successors, (1683), 6 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:54,071 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 11:44:54,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:44:54,071 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash 681723982, now seen corresponding path program 1 times [2022-09-16 11:44:54,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:54,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550639181] [2022-09-16 11:44:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:54,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:54,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550639181] [2022-09-16 11:44:54,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550639181] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:54,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:54,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:54,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815187349] [2022-09-16 11:44:54,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:54,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:54,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:54,129 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 339 [2022-09-16 11:44:54,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 347 transitions, 1338 flow. Second operand has 6 states, 6 states have (on average 280.6666666666667) internal successors, (1684), 6 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:54,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 339 [2022-09-16 11:44:54,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:54,576 INFO L130 PetriNetUnfolder]: 232/2150 cut-off events. [2022-09-16 11:44:54,576 INFO L131 PetriNetUnfolder]: For 1101/1101 co-relation queries the response was YES. [2022-09-16 11:44:54,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4111 conditions, 2150 events. 232/2150 cut-off events. For 1101/1101 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 16048 event pairs, 64 based on Foata normal form. 0/1999 useless extension candidates. Maximal degree in co-relation 3607. Up to 157 conditions per place. [2022-09-16 11:44:54,619 INFO L137 encePairwiseOnDemand]: 333/339 looper letters, 47 selfloop transitions, 6 changer transitions 0/350 dead transitions. [2022-09-16 11:44:54,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 350 transitions, 1452 flow [2022-09-16 11:44:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:44:54,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:44:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1706 transitions. [2022-09-16 11:44:54,622 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8387413962635202 [2022-09-16 11:44:54,622 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1706 transitions. [2022-09-16 11:44:54,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1706 transitions. [2022-09-16 11:44:54,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:54,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1706 transitions. [2022-09-16 11:44:54,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 6 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,628 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,628 INFO L175 Difference]: Start difference. First operand has 356 places, 347 transitions, 1338 flow. Second operand 6 states and 1706 transitions. [2022-09-16 11:44:54,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 350 transitions, 1452 flow [2022-09-16 11:44:54,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 350 transitions, 1441 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:44:54,644 INFO L231 Difference]: Finished difference. Result has 356 places, 346 transitions, 1337 flow [2022-09-16 11:44:54,645 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1337, PETRI_PLACES=356, PETRI_TRANSITIONS=346} [2022-09-16 11:44:54,645 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 71 predicate places. [2022-09-16 11:44:54,645 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 346 transitions, 1337 flow [2022-09-16 11:44:54,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 280.6666666666667) internal successors, (1684), 6 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:54,646 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 11:44:54,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:44:54,646 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:54,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:54,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1441803643, now seen corresponding path program 1 times [2022-09-16 11:44:54,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:54,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744215756] [2022-09-16 11:44:54,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:54,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:54,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:54,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744215756] [2022-09-16 11:44:54,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744215756] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:54,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:54,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:54,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610061332] [2022-09-16 11:44:54,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:54,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:54,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:54,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:54,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:54,733 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 339 [2022-09-16 11:44:54,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 346 transitions, 1337 flow. Second operand has 8 states, 8 states have (on average 270.5) internal successors, (2164), 8 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:54,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 339 [2022-09-16 11:44:54,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:55,126 INFO L130 PetriNetUnfolder]: 170/1055 cut-off events. [2022-09-16 11:44:55,126 INFO L131 PetriNetUnfolder]: For 502/502 co-relation queries the response was YES. [2022-09-16 11:44:55,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 1055 events. 170/1055 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6289 event pairs, 34 based on Foata normal form. 6/1027 useless extension candidates. Maximal degree in co-relation 2027. Up to 91 conditions per place. [2022-09-16 11:44:55,154 INFO L137 encePairwiseOnDemand]: 325/339 looper letters, 60 selfloop transitions, 19 changer transitions 0/358 dead transitions. [2022-09-16 11:44:55,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 358 transitions, 1522 flow [2022-09-16 11:44:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:44:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:44:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3005 transitions. [2022-09-16 11:44:55,159 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.805846071332797 [2022-09-16 11:44:55,159 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3005 transitions. [2022-09-16 11:44:55,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3005 transitions. [2022-09-16 11:44:55,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:55,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3005 transitions. [2022-09-16 11:44:55,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.1818181818182) internal successors, (3005), 11 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,169 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,169 INFO L175 Difference]: Start difference. First operand has 356 places, 346 transitions, 1337 flow. Second operand 11 states and 3005 transitions. [2022-09-16 11:44:55,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 358 transitions, 1522 flow [2022-09-16 11:44:55,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 358 transitions, 1504 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:44:55,181 INFO L231 Difference]: Finished difference. Result has 360 places, 344 transitions, 1342 flow [2022-09-16 11:44:55,182 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1342, PETRI_PLACES=360, PETRI_TRANSITIONS=344} [2022-09-16 11:44:55,183 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 75 predicate places. [2022-09-16 11:44:55,183 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 344 transitions, 1342 flow [2022-09-16 11:44:55,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.5) internal successors, (2164), 8 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:55,184 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 11:44:55,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 11:44:55,184 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:55,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:55,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1746239062, now seen corresponding path program 1 times [2022-09-16 11:44:55,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:55,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22881151] [2022-09-16 11:44:55,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:55,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:55,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:55,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22881151] [2022-09-16 11:44:55,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22881151] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:55,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:55,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:55,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056727515] [2022-09-16 11:44:55,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:55,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:55,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:55,253 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 339 [2022-09-16 11:44:55,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 344 transitions, 1342 flow. Second operand has 8 states, 8 states have (on average 270.625) internal successors, (2165), 8 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:55,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 339 [2022-09-16 11:44:55,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:55,645 INFO L130 PetriNetUnfolder]: 156/1038 cut-off events. [2022-09-16 11:44:55,646 INFO L131 PetriNetUnfolder]: For 564/564 co-relation queries the response was YES. [2022-09-16 11:44:55,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2216 conditions, 1038 events. 156/1038 cut-off events. For 564/564 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6084 event pairs, 34 based on Foata normal form. 3/1007 useless extension candidates. Maximal degree in co-relation 2002. Up to 91 conditions per place. [2022-09-16 11:44:55,676 INFO L137 encePairwiseOnDemand]: 325/339 looper letters, 58 selfloop transitions, 17 changer transitions 0/358 dead transitions. [2022-09-16 11:44:55,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 358 transitions, 1535 flow [2022-09-16 11:44:55,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:44:55,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:44:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3006 transitions. [2022-09-16 11:44:55,680 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8061142397425584 [2022-09-16 11:44:55,680 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3006 transitions. [2022-09-16 11:44:55,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3006 transitions. [2022-09-16 11:44:55,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:55,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3006 transitions. [2022-09-16 11:44:55,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.27272727272725) internal successors, (3006), 11 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,689 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,689 INFO L175 Difference]: Start difference. First operand has 360 places, 344 transitions, 1342 flow. Second operand 11 states and 3006 transitions. [2022-09-16 11:44:55,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 358 transitions, 1535 flow [2022-09-16 11:44:55,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 358 transitions, 1493 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-09-16 11:44:55,701 INFO L231 Difference]: Finished difference. Result has 360 places, 343 transitions, 1330 flow [2022-09-16 11:44:55,702 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1330, PETRI_PLACES=360, PETRI_TRANSITIONS=343} [2022-09-16 11:44:55,702 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 75 predicate places. [2022-09-16 11:44:55,702 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 343 transitions, 1330 flow [2022-09-16 11:44:55,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.625) internal successors, (2165), 8 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:55,703 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 11:44:55,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-16 11:44:55,704 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:55,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:55,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1004845549, now seen corresponding path program 1 times [2022-09-16 11:44:55,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:55,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810074347] [2022-09-16 11:44:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:55,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:55,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:55,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810074347] [2022-09-16 11:44:55,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810074347] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:55,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:55,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911758554] [2022-09-16 11:44:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:55,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:55,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:55,784 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 339 [2022-09-16 11:44:55,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 343 transitions, 1330 flow. Second operand has 8 states, 8 states have (on average 270.625) internal successors, (2165), 8 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:55,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 339 [2022-09-16 11:44:55,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:56,263 INFO L130 PetriNetUnfolder]: 275/1967 cut-off events. [2022-09-16 11:44:56,263 INFO L131 PetriNetUnfolder]: For 1096/1096 co-relation queries the response was YES. [2022-09-16 11:44:56,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3872 conditions, 1967 events. 275/1967 cut-off events. For 1096/1096 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14399 event pairs, 52 based on Foata normal form. 8/1804 useless extension candidates. Maximal degree in co-relation 3370. Up to 129 conditions per place. [2022-09-16 11:44:56,294 INFO L137 encePairwiseOnDemand]: 325/339 looper letters, 60 selfloop transitions, 19 changer transitions 0/355 dead transitions. [2022-09-16 11:44:56,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 355 transitions, 1508 flow [2022-09-16 11:44:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:44:56,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:44:56,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3005 transitions. [2022-09-16 11:44:56,299 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.805846071332797 [2022-09-16 11:44:56,299 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3005 transitions. [2022-09-16 11:44:56,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3005 transitions. [2022-09-16 11:44:56,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:56,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3005 transitions. [2022-09-16 11:44:56,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.1818181818182) internal successors, (3005), 11 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,307 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,307 INFO L175 Difference]: Start difference. First operand has 360 places, 343 transitions, 1330 flow. Second operand 11 states and 3005 transitions. [2022-09-16 11:44:56,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 355 transitions, 1508 flow [2022-09-16 11:44:56,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 355 transitions, 1464 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-09-16 11:44:56,322 INFO L231 Difference]: Finished difference. Result has 359 places, 341 transitions, 1309 flow [2022-09-16 11:44:56,323 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1309, PETRI_PLACES=359, PETRI_TRANSITIONS=341} [2022-09-16 11:44:56,323 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 74 predicate places. [2022-09-16 11:44:56,324 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 341 transitions, 1309 flow [2022-09-16 11:44:56,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.625) internal successors, (2165), 8 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:56,325 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 11:44:56,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 11:44:56,325 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-09-16 11:44:56,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:56,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1085439913, now seen corresponding path program 1 times [2022-09-16 11:44:56,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:56,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111900216] [2022-09-16 11:44:56,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:56,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:56,382 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 11:44:56,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:56,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111900216] [2022-09-16 11:44:56,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111900216] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:56,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:56,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:56,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847135159] [2022-09-16 11:44:56,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:56,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:56,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:56,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:56,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:56,387 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 339 [2022-09-16 11:44:56,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 341 transitions, 1309 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:56,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 339 [2022-09-16 11:44:56,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:56,903 INFO L130 PetriNetUnfolder]: 254/1942 cut-off events. [2022-09-16 11:44:56,903 INFO L131 PetriNetUnfolder]: For 1036/1036 co-relation queries the response was YES. [2022-09-16 11:44:56,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3784 conditions, 1942 events. 254/1942 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 13980 event pairs, 52 based on Foata normal form. 4/1789 useless extension candidates. Maximal degree in co-relation 3301. Up to 129 conditions per place. [2022-09-16 11:44:56,927 INFO L137 encePairwiseOnDemand]: 325/339 looper letters, 0 selfloop transitions, 0 changer transitions 355/355 dead transitions. [2022-09-16 11:44:56,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 355 transitions, 1495 flow [2022-09-16 11:44:56,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:44:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:44:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3006 transitions. [2022-09-16 11:44:56,931 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8061142397425584 [2022-09-16 11:44:56,931 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3006 transitions. [2022-09-16 11:44:56,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3006 transitions. [2022-09-16 11:44:56,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:56,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3006 transitions. [2022-09-16 11:44:56,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.27272727272725) internal successors, (3006), 11 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,941 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 339.0) internal successors, (4068), 12 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,941 INFO L175 Difference]: Start difference. First operand has 359 places, 341 transitions, 1309 flow. Second operand 11 states and 3006 transitions. [2022-09-16 11:44:56,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 355 transitions, 1495 flow [2022-09-16 11:44:56,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 355 transitions, 1453 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-09-16 11:44:56,956 INFO L231 Difference]: Finished difference. Result has 359 places, 0 transitions, 0 flow [2022-09-16 11:44:56,957 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=359, PETRI_TRANSITIONS=0} [2022-09-16 11:44:56,958 INFO L287 CegarLoopForPetriNet]: 285 programPoint places, 74 predicate places. [2022-09-16 11:44:56,958 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 0 transitions, 0 flow [2022-09-16 11:44:56,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 50 remaining) [2022-09-16 11:44:56,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 50 remaining) [2022-09-16 11:44:56,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 50 remaining) [2022-09-16 11:44:56,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 50 remaining) [2022-09-16 11:44:56,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 50 remaining) [2022-09-16 11:44:56,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 50 remaining) [2022-09-16 11:44:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 50 remaining) [2022-09-16 11:44:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 50 remaining) [2022-09-16 11:44:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 50 remaining) [2022-09-16 11:44:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 50 remaining) [2022-09-16 11:44:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 50 remaining) [2022-09-16 11:44:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 50 remaining) [2022-09-16 11:44:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 50 remaining) [2022-09-16 11:44:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 50 remaining) [2022-09-16 11:44:56,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 50 remaining) [2022-09-16 11:44:56,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 50 remaining) [2022-09-16 11:44:56,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 50 remaining) [2022-09-16 11:44:56,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 50 remaining) [2022-09-16 11:44:56,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 50 remaining) [2022-09-16 11:44:56,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 50 remaining) [2022-09-16 11:44:56,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 50 remaining) [2022-09-16 11:44:56,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 50 remaining) [2022-09-16 11:44:56,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 50 remaining) [2022-09-16 11:44:56,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 50 remaining) [2022-09-16 11:44:56,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 50 remaining) [2022-09-16 11:44:56,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 50 remaining) [2022-09-16 11:44:56,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 50 remaining) [2022-09-16 11:44:56,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 50 remaining) [2022-09-16 11:44:56,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 50 remaining) [2022-09-16 11:44:56,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 50 remaining) [2022-09-16 11:44:56,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 50 remaining) [2022-09-16 11:44:56,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 50 remaining) [2022-09-16 11:44:56,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 50 remaining) [2022-09-16 11:44:56,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 50 remaining) [2022-09-16 11:44:56,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 50 remaining) [2022-09-16 11:44:56,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 50 remaining) [2022-09-16 11:44:56,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 50 remaining) [2022-09-16 11:44:56,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 50 remaining) [2022-09-16 11:44:56,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 50 remaining) [2022-09-16 11:44:56,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 50 remaining) [2022-09-16 11:44:56,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 50 remaining) [2022-09-16 11:44:56,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 50 remaining) [2022-09-16 11:44:56,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 50 remaining) [2022-09-16 11:44:56,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 50 remaining) [2022-09-16 11:44:56,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 50 remaining) [2022-09-16 11:44:56,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 50 remaining) [2022-09-16 11:44:56,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 50 remaining) [2022-09-16 11:44:56,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 50 remaining) [2022-09-16 11:44:56,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 50 remaining) [2022-09-16 11:44:56,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 50 remaining) [2022-09-16 11:44:56,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-16 11:44:56,971 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:56,977 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:44:56,978 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:44:56,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:44:56 BasicIcfg [2022-09-16 11:44:56,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:44:56,984 INFO L158 Benchmark]: Toolchain (without parser) took 14941.87ms. Allocated memory was 174.1MB in the beginning and 589.3MB in the end (delta: 415.2MB). Free memory was 147.3MB in the beginning and 439.5MB in the end (delta: -292.1MB). Peak memory consumption was 309.5MB. Max. memory is 8.0GB. [2022-09-16 11:44:56,984 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 174.1MB. Free memory was 134.5MB in the beginning and 134.5MB in the end (delta: 58.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:44:56,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.08ms. Allocated memory was 174.1MB in the beginning and 218.1MB in the end (delta: 44.0MB). Free memory was 147.2MB in the beginning and 193.1MB in the end (delta: -45.9MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. [2022-09-16 11:44:56,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.49ms. Allocated memory is still 218.1MB. Free memory was 193.1MB in the beginning and 190.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:44:56,985 INFO L158 Benchmark]: Boogie Preprocessor took 43.64ms. Allocated memory is still 218.1MB. Free memory was 190.8MB in the beginning and 189.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:44:56,986 INFO L158 Benchmark]: RCFGBuilder took 627.81ms. Allocated memory is still 218.1MB. Free memory was 189.2MB in the beginning and 167.1MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-09-16 11:44:56,986 INFO L158 Benchmark]: TraceAbstraction took 13853.39ms. Allocated memory was 218.1MB in the beginning and 589.3MB in the end (delta: 371.2MB). Free memory was 166.5MB in the beginning and 439.5MB in the end (delta: -273.0MB). Peak memory consumption was 285.5MB. Max. memory is 8.0GB. [2022-09-16 11:44:56,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 174.1MB. Free memory was 134.5MB in the beginning and 134.5MB in the end (delta: 58.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 349.08ms. Allocated memory was 174.1MB in the beginning and 218.1MB in the end (delta: 44.0MB). Free memory was 147.2MB in the beginning and 193.1MB in the end (delta: -45.9MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.49ms. Allocated memory is still 218.1MB. Free memory was 193.1MB in the beginning and 190.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.64ms. Allocated memory is still 218.1MB. Free memory was 190.8MB in the beginning and 189.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 627.81ms. Allocated memory is still 218.1MB. Free memory was 189.2MB in the beginning and 167.1MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 13853.39ms. Allocated memory was 218.1MB in the beginning and 589.3MB in the end (delta: 371.2MB). Free memory was 166.5MB in the beginning and 439.5MB in the end (delta: -273.0MB). Peak memory consumption was 285.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 539 locations, 50 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.6s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2198 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2198 mSDsluCounter, 1869 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1394 mSDsCounter, 247 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3086 IncrementalHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 247 mSolverCounterUnsat, 784 mSDtfsCounter, 3086 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1342occurred in iteration=23, InterpolantAutomatonStates: 198, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 2006 NumberOfCodeBlocks, 2006 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1980 ConstructedInterpolants, 0 QuantifiedInterpolants, 5148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 24 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:44:57,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...