/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-name-comparator-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:44:51,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:44:51,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:44:51,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:44:51,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:44:51,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:44:51,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:44:51,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:44:51,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:44:51,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:44:51,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:44:51,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:44:51,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:44:51,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:44:51,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:44:51,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:44:51,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:44:51,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:44:51,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:44:51,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:44:51,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:44:51,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:44:51,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:44:51,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:44:51,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:44:51,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:44:51,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:44:51,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:44:51,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:44:51,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:44:51,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:44:51,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:44:51,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:44:51,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:44:51,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:44:51,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:44:51,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:44:51,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:44:51,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:44:51,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:44:51,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:44:51,888 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 11:44:51,914 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:44:51,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:44:51,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:44:51,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:44:51,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:44:51,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:44:51,916 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:44:51,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:44:51,916 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:44:51,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:44:51,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:44:51,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:44:51,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:44:51,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:44:51,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:44:51,917 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:44:51,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:44:51,917 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:44:51,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:44:51,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:44:51,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:44:51,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:44:51,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:44:51,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:44:51,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:44:51,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:44:51,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:44:51,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:44:51,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:44:51,919 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:44:51,919 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:44:51,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:44:52,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:44:52,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:44:52,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:44:52,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:44:52,127 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:44:52,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2022-09-16 11:44:52,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b8788758/41b3ce63ad714372a7c5f1076fe1e0c8/FLAGad8840837 [2022-09-16 11:44:52,598 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:44:52,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2022-09-16 11:44:52,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b8788758/41b3ce63ad714372a7c5f1076fe1e0c8/FLAGad8840837 [2022-09-16 11:44:52,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b8788758/41b3ce63ad714372a7c5f1076fe1e0c8 [2022-09-16 11:44:52,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:44:52,616 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:44:52,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:44:52,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:44:52,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:44:52,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:44:52" (1/1) ... [2022-09-16 11:44:52,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb173a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52, skipping insertion in model container [2022-09-16 11:44:52,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:44:52" (1/1) ... [2022-09-16 11:44:52,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:44:52,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:44:52,910 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-name-comparator-subst.wvr.c[4836,4849] [2022-09-16 11:44:52,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:44:52,921 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:44:52,953 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-name-comparator-subst.wvr.c[4836,4849] [2022-09-16 11:44:52,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:44:52,970 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:44:52,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52 WrapperNode [2022-09-16 11:44:52,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:44:52,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:44:52,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:44:52,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:44:52,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52" (1/1) ... [2022-09-16 11:44:52,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52" (1/1) ... [2022-09-16 11:44:53,034 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 419 [2022-09-16 11:44:53,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:44:53,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:44:53,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:44:53,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:44:53,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52" (1/1) ... [2022-09-16 11:44:53,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52" (1/1) ... [2022-09-16 11:44:53,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52" (1/1) ... [2022-09-16 11:44:53,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52" (1/1) ... [2022-09-16 11:44:53,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52" (1/1) ... [2022-09-16 11:44:53,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52" (1/1) ... [2022-09-16 11:44:53,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52" (1/1) ... [2022-09-16 11:44:53,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:44:53,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:44:53,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:44:53,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:44:53,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52" (1/1) ... [2022-09-16 11:44:53,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:44:53,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:44:53,121 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 11:44:53,140 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 11:44:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:44:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:44:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:44:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:44:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:44:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:44:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:44:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:44:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:44:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:44:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:44:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:44:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:44:53,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:44:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:44:53,161 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 11:44:53,302 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:44:53,303 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:44:53,755 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:44:53,768 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:44:53,768 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:44:53,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:44:53 BoogieIcfgContainer [2022-09-16 11:44:53,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:44:53,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:44:53,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:44:53,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:44:53,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:44:52" (1/3) ... [2022-09-16 11:44:53,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d940cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:44:53, skipping insertion in model container [2022-09-16 11:44:53,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:52" (2/3) ... [2022-09-16 11:44:53,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d940cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:44:53, skipping insertion in model container [2022-09-16 11:44:53,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:44:53" (3/3) ... [2022-09-16 11:44:53,778 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2022-09-16 11:44:53,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:44:53,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-09-16 11:44:53,790 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:44:53,912 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:44:53,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 506 places, 546 transitions, 1116 flow [2022-09-16 11:44:54,136 INFO L130 PetriNetUnfolder]: 50/543 cut-off events. [2022-09-16 11:44:54,136 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:44:54,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 543 events. 50/543 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1771 event pairs, 0 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 397. Up to 2 conditions per place. [2022-09-16 11:44:54,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 506 places, 546 transitions, 1116 flow [2022-09-16 11:44:54,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 483 places, 522 transitions, 1059 flow [2022-09-16 11:44:54,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:44:54,184 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;@5929b58d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:44:54,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-09-16 11:44:54,194 INFO L130 PetriNetUnfolder]: 3/112 cut-off events. [2022-09-16 11:44:54,194 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:44:54,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:54,195 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] [2022-09-16 11:44:54,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:44:54,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:54,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1465816871, now seen corresponding path program 1 times [2022-09-16 11:44:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:54,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595949031] [2022-09-16 11:44:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:54,459 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 11:44:54,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:54,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595949031] [2022-09-16 11:44:54,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595949031] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:54,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:54,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:54,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343014832] [2022-09-16 11:44:54,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:54,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:54,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:54,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:54,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:54,494 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 546 [2022-09-16 11:44:54,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 522 transitions, 1059 flow. Second operand has 4 states, 4 states have (on average 509.5) internal successors, (2038), 4 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:54,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 546 [2022-09-16 11:44:54,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:54,798 INFO L130 PetriNetUnfolder]: 61/907 cut-off events. [2022-09-16 11:44:54,798 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-09-16 11:44:54,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 907 events. 61/907 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4808 event pairs, 0 based on Foata normal form. 58/827 useless extension candidates. Maximal degree in co-relation 677. Up to 18 conditions per place. [2022-09-16 11:44:54,818 INFO L137 encePairwiseOnDemand]: 522/546 looper letters, 26 selfloop transitions, 4 changer transitions 2/517 dead transitions. [2022-09-16 11:44:54,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 517 transitions, 1124 flow [2022-09-16 11:44:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:44:54,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:44:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2606 transitions. [2022-09-16 11:44:54,837 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9545787545787546 [2022-09-16 11:44:54,838 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2606 transitions. [2022-09-16 11:44:54,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2606 transitions. [2022-09-16 11:44:54,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:54,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2606 transitions. [2022-09-16 11:44:54,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 521.2) internal successors, (2606), 5 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 546.0) internal successors, (3276), 6 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,865 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 546.0) internal successors, (3276), 6 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,866 INFO L175 Difference]: Start difference. First operand has 483 places, 522 transitions, 1059 flow. Second operand 5 states and 2606 transitions. [2022-09-16 11:44:54,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 517 transitions, 1124 flow [2022-09-16 11:44:54,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 517 transitions, 1106 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:44:54,882 INFO L231 Difference]: Finished difference. Result has 485 places, 505 transitions, 1040 flow [2022-09-16 11:44:54,885 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1040, PETRI_PLACES=485, PETRI_TRANSITIONS=505} [2022-09-16 11:44:54,890 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 2 predicate places. [2022-09-16 11:44:54,890 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 505 transitions, 1040 flow [2022-09-16 11:44:54,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 509.5) internal successors, (2038), 4 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:54,892 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:54,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:44:54,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:44:54,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:54,893 INFO L85 PathProgramCache]: Analyzing trace with hash 259525410, now seen corresponding path program 1 times [2022-09-16 11:44:54,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:54,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495706070] [2022-09-16 11:44:54,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:54,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:55,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:55,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495706070] [2022-09-16 11:44:55,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495706070] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:44:55,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008368843] [2022-09-16 11:44:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:55,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:44:55,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:44:55,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:44:55,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:44:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:55,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:44:55,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:44:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:55,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:44:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:55,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008368843] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:44:55,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:44:55,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:44:55,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620459290] [2022-09-16 11:44:55,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:44:55,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:44:55,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:55,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:44:55,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:44:55,274 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 546 [2022-09-16 11:44:55,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 505 transitions, 1040 flow. Second operand has 12 states, 12 states have (on average 510.6666666666667) internal successors, (6128), 12 states have internal predecessors, (6128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:55,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 546 [2022-09-16 11:44:55,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:55,918 INFO L130 PetriNetUnfolder]: 151/2116 cut-off events. [2022-09-16 11:44:55,919 INFO L131 PetriNetUnfolder]: For 21/31 co-relation queries the response was YES. [2022-09-16 11:44:55,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 2116 events. 151/2116 cut-off events. For 21/31 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 15820 event pairs, 0 based on Foata normal form. 3/1784 useless extension candidates. Maximal degree in co-relation 1704. Up to 13 conditions per place. [2022-09-16 11:44:55,963 INFO L137 encePairwiseOnDemand]: 539/546 looper letters, 53 selfloop transitions, 18 changer transitions 0/556 dead transitions. [2022-09-16 11:44:55,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 556 transitions, 1330 flow [2022-09-16 11:44:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:44:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:44:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 9218 transitions. [2022-09-16 11:44:55,976 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.937932437932438 [2022-09-16 11:44:55,976 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 9218 transitions. [2022-09-16 11:44:55,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 9218 transitions. [2022-09-16 11:44:55,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:55,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 9218 transitions. [2022-09-16 11:44:55,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 512.1111111111111) internal successors, (9218), 18 states have internal predecessors, (9218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 546.0) internal successors, (10374), 19 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,013 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 546.0) internal successors, (10374), 19 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,013 INFO L175 Difference]: Start difference. First operand has 485 places, 505 transitions, 1040 flow. Second operand 18 states and 9218 transitions. [2022-09-16 11:44:56,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 556 transitions, 1330 flow [2022-09-16 11:44:56,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 556 transitions, 1328 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:56,024 INFO L231 Difference]: Finished difference. Result has 503 places, 517 transitions, 1144 flow [2022-09-16 11:44:56,024 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1144, PETRI_PLACES=503, PETRI_TRANSITIONS=517} [2022-09-16 11:44:56,025 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 20 predicate places. [2022-09-16 11:44:56,025 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 517 transitions, 1144 flow [2022-09-16 11:44:56,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 510.6666666666667) internal successors, (6128), 12 states have internal predecessors, (6128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:56,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:56,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:44:56,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:44:56,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:44:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:56,246 INFO L85 PathProgramCache]: Analyzing trace with hash -544645645, now seen corresponding path program 1 times [2022-09-16 11:44:56,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:56,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276368447] [2022-09-16 11:44:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:56,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:56,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:56,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276368447] [2022-09-16 11:44:56,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276368447] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:44:56,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864467519] [2022-09-16 11:44:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:56,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:44:56,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:44:56,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:44:56,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:44:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:56,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:44:56,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:44:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:56,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:44:56,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864467519] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:56,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:44:56,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:44:56,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425652291] [2022-09-16 11:44:56,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:56,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:56,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:56,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:56,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:56,423 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 546 [2022-09-16 11:44:56,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 517 transitions, 1144 flow. Second operand has 6 states, 6 states have (on average 510.3333333333333) internal successors, (3062), 6 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:56,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 546 [2022-09-16 11:44:56,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:56,919 INFO L130 PetriNetUnfolder]: 151/2112 cut-off events. [2022-09-16 11:44:56,920 INFO L131 PetriNetUnfolder]: For 57/67 co-relation queries the response was YES. [2022-09-16 11:44:56,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2254 conditions, 2112 events. 151/2112 cut-off events. For 57/67 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 15792 event pairs, 0 based on Foata normal form. 4/1781 useless extension candidates. Maximal degree in co-relation 1797. Up to 36 conditions per place. [2022-09-16 11:44:56,967 INFO L137 encePairwiseOnDemand]: 541/546 looper letters, 27 selfloop transitions, 11 changer transitions 0/523 dead transitions. [2022-09-16 11:44:56,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 523 transitions, 1221 flow [2022-09-16 11:44:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:56,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3586 transitions. [2022-09-16 11:44:56,973 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9382522239665096 [2022-09-16 11:44:56,973 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3586 transitions. [2022-09-16 11:44:56,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3586 transitions. [2022-09-16 11:44:56,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:56,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3586 transitions. [2022-09-16 11:44:56,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 512.2857142857143) internal successors, (3586), 7 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 546.0) internal successors, (4368), 8 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,996 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 546.0) internal successors, (4368), 8 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,997 INFO L175 Difference]: Start difference. First operand has 503 places, 517 transitions, 1144 flow. Second operand 7 states and 3586 transitions. [2022-09-16 11:44:56,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 523 transitions, 1221 flow [2022-09-16 11:44:57,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 523 transitions, 1189 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:44:57,007 INFO L231 Difference]: Finished difference. Result has 499 places, 513 transitions, 1107 flow [2022-09-16 11:44:57,008 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1107, PETRI_PLACES=499, PETRI_TRANSITIONS=513} [2022-09-16 11:44:57,010 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 16 predicate places. [2022-09-16 11:44:57,010 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 513 transitions, 1107 flow [2022-09-16 11:44:57,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 510.3333333333333) internal successors, (3062), 6 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:57,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:57,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:57,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:44:57,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:44:57,228 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:44:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1608176753, now seen corresponding path program 1 times [2022-09-16 11:44:57,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:57,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161342160] [2022-09-16 11:44:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:57,282 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 11:44:57,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:57,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161342160] [2022-09-16 11:44:57,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161342160] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:57,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:57,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:44:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065860365] [2022-09-16 11:44:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:57,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:57,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:57,286 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 546 [2022-09-16 11:44:57,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 513 transitions, 1107 flow. Second operand has 4 states, 4 states have (on average 503.25) internal successors, (2013), 4 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:57,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:57,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 546 [2022-09-16 11:44:57,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:58,315 INFO L130 PetriNetUnfolder]: 501/4177 cut-off events. [2022-09-16 11:44:58,331 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-09-16 11:44:58,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5193 conditions, 4177 events. 501/4177 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 40805 event pairs, 150 based on Foata normal form. 0/3537 useless extension candidates. Maximal degree in co-relation 4155. Up to 433 conditions per place. [2022-09-16 11:44:58,402 INFO L137 encePairwiseOnDemand]: 541/546 looper letters, 35 selfloop transitions, 4 changer transitions 0/528 dead transitions. [2022-09-16 11:44:58,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 528 transitions, 1226 flow [2022-09-16 11:44:58,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:44:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:44:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2545 transitions. [2022-09-16 11:44:58,407 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9322344322344323 [2022-09-16 11:44:58,407 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2545 transitions. [2022-09-16 11:44:58,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2545 transitions. [2022-09-16 11:44:58,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:58,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2545 transitions. [2022-09-16 11:44:58,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 509.0) internal successors, (2545), 5 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:58,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 546.0) internal successors, (3276), 6 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:58,414 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 546.0) internal successors, (3276), 6 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:58,415 INFO L175 Difference]: Start difference. First operand has 499 places, 513 transitions, 1107 flow. Second operand 5 states and 2545 transitions. [2022-09-16 11:44:58,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 528 transitions, 1226 flow [2022-09-16 11:44:58,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 528 transitions, 1212 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:44:58,426 INFO L231 Difference]: Finished difference. Result has 501 places, 516 transitions, 1121 flow [2022-09-16 11:44:58,426 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1121, PETRI_PLACES=501, PETRI_TRANSITIONS=516} [2022-09-16 11:44:58,428 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 18 predicate places. [2022-09-16 11:44:58,428 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 516 transitions, 1121 flow [2022-09-16 11:44:58,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 503.25) internal successors, (2013), 4 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:58,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:58,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:58,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:44:58,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:44:58,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:58,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1186104369, now seen corresponding path program 1 times [2022-09-16 11:44:58,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:58,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420425072] [2022-09-16 11:44:58,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:58,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:58,517 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 11:44:58,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:58,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420425072] [2022-09-16 11:44:58,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420425072] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:58,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:58,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:58,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354576181] [2022-09-16 11:44:58,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:58,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:44:58,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:58,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:44:58,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:44:58,520 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 546 [2022-09-16 11:44:58,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 516 transitions, 1121 flow. Second operand has 5 states, 5 states have (on average 509.8) internal successors, (2549), 5 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:58,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:58,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 546 [2022-09-16 11:44:58,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:58,970 INFO L130 PetriNetUnfolder]: 129/1906 cut-off events. [2022-09-16 11:44:58,971 INFO L131 PetriNetUnfolder]: For 56/72 co-relation queries the response was YES. [2022-09-16 11:44:59,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2070 conditions, 1906 events. 129/1906 cut-off events. For 56/72 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 14288 event pairs, 0 based on Foata normal form. 0/1622 useless extension candidates. Maximal degree in co-relation 1932. Up to 53 conditions per place. [2022-09-16 11:44:59,012 INFO L137 encePairwiseOnDemand]: 541/546 looper letters, 23 selfloop transitions, 4 changer transitions 0/518 dead transitions. [2022-09-16 11:44:59,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 518 transitions, 1179 flow [2022-09-16 11:44:59,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:44:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:44:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2562 transitions. [2022-09-16 11:44:59,016 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9384615384615385 [2022-09-16 11:44:59,016 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2562 transitions. [2022-09-16 11:44:59,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2562 transitions. [2022-09-16 11:44:59,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:59,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2562 transitions. [2022-09-16 11:44:59,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 512.4) internal successors, (2562), 5 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:59,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 546.0) internal successors, (3276), 6 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:59,024 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 546.0) internal successors, (3276), 6 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:59,024 INFO L175 Difference]: Start difference. First operand has 501 places, 516 transitions, 1121 flow. Second operand 5 states and 2562 transitions. [2022-09-16 11:44:59,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 518 transitions, 1179 flow [2022-09-16 11:44:59,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 518 transitions, 1177 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:59,031 INFO L231 Difference]: Finished difference. Result has 505 places, 516 transitions, 1131 flow [2022-09-16 11:44:59,032 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1131, PETRI_PLACES=505, PETRI_TRANSITIONS=516} [2022-09-16 11:44:59,033 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 22 predicate places. [2022-09-16 11:44:59,033 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 516 transitions, 1131 flow [2022-09-16 11:44:59,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 509.8) internal successors, (2549), 5 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:59,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:59,034 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:59,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:44:59,034 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:44:59,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:59,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1554732007, now seen corresponding path program 2 times [2022-09-16 11:44:59,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:59,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746960560] [2022-09-16 11:44:59,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:59,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-09-16 11:44:59,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:59,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746960560] [2022-09-16 11:44:59,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746960560] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:44:59,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322619661] [2022-09-16 11:44:59,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:44:59,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:44:59,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:44:59,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:44:59,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:44:59,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:44:59,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:44:59,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:44:59,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:44:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:44:59,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:44:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:44:59,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322619661] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:44:59,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:44:59,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-09-16 11:44:59,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395407009] [2022-09-16 11:44:59,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:44:59,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:44:59,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:59,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:44:59,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:44:59,366 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 546 [2022-09-16 11:44:59,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 516 transitions, 1131 flow. Second operand has 17 states, 17 states have (on average 506.94117647058823) internal successors, (8618), 17 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:59,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:59,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 546 [2022-09-16 11:44:59,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:59,898 INFO L130 PetriNetUnfolder]: 96/1447 cut-off events. [2022-09-16 11:44:59,898 INFO L131 PetriNetUnfolder]: For 35/47 co-relation queries the response was YES. [2022-09-16 11:44:59,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1581 conditions, 1447 events. 96/1447 cut-off events. For 35/47 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9812 event pairs, 0 based on Foata normal form. 1/1238 useless extension candidates. Maximal degree in co-relation 1569. Up to 17 conditions per place. [2022-09-16 11:44:59,941 INFO L137 encePairwiseOnDemand]: 538/546 looper letters, 26 selfloop transitions, 15 changer transitions 0/524 dead transitions. [2022-09-16 11:44:59,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 524 transitions, 1216 flow [2022-09-16 11:44:59,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:44:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:44:59,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 8090 transitions. [2022-09-16 11:44:59,953 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9260531135531136 [2022-09-16 11:44:59,954 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 8090 transitions. [2022-09-16 11:44:59,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 8090 transitions. [2022-09-16 11:44:59,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:59,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 8090 transitions. [2022-09-16 11:44:59,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 505.625) internal successors, (8090), 16 states have internal predecessors, (8090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:59,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 546.0) internal successors, (9282), 17 states have internal predecessors, (9282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:59,983 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 546.0) internal successors, (9282), 17 states have internal predecessors, (9282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:59,983 INFO L175 Difference]: Start difference. First operand has 505 places, 516 transitions, 1131 flow. Second operand 16 states and 8090 transitions. [2022-09-16 11:44:59,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 524 transitions, 1216 flow [2022-09-16 11:44:59,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 524 transitions, 1183 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-09-16 11:44:59,991 INFO L231 Difference]: Finished difference. Result has 508 places, 512 transitions, 1112 flow [2022-09-16 11:44:59,992 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1112, PETRI_PLACES=508, PETRI_TRANSITIONS=512} [2022-09-16 11:44:59,993 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 25 predicate places. [2022-09-16 11:44:59,993 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 512 transitions, 1112 flow [2022-09-16 11:44:59,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 506.94117647058823) internal successors, (8618), 17 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:59,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:59,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:00,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:45:00,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:45:00,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:45:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1823038550, now seen corresponding path program 1 times [2022-09-16 11:45:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:00,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857961624] [2022-09-16 11:45:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:00,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:45:00,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:00,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857961624] [2022-09-16 11:45:00,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857961624] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:00,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:00,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:45:00,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168415633] [2022-09-16 11:45:00,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:00,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:45:00,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:00,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:45:00,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:45:00,270 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 485 out of 546 [2022-09-16 11:45:00,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 512 transitions, 1112 flow. Second operand has 3 states, 3 states have (on average 487.6666666666667) internal successors, (1463), 3 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:00,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:00,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 485 of 546 [2022-09-16 11:45:00,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:18,817 INFO L130 PetriNetUnfolder]: 25698/125932 cut-off events. [2022-09-16 11:45:18,818 INFO L131 PetriNetUnfolder]: For 1000/1000 co-relation queries the response was YES. [2022-09-16 11:45:20,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158484 conditions, 125932 events. 25698/125932 cut-off events. For 1000/1000 co-relation queries the response was YES. Maximal size of possible extension queue 2908. Compared 2111600 event pairs, 7437 based on Foata normal form. 0/99589 useless extension candidates. Maximal degree in co-relation 158474. Up to 16122 conditions per place. [2022-09-16 11:45:20,852 INFO L137 encePairwiseOnDemand]: 543/546 looper letters, 70 selfloop transitions, 2 changer transitions 0/544 dead transitions. [2022-09-16 11:45:20,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 544 transitions, 1325 flow [2022-09-16 11:45:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:45:20,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:45:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1528 transitions. [2022-09-16 11:45:20,857 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9328449328449329 [2022-09-16 11:45:20,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1528 transitions. [2022-09-16 11:45:20,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1528 transitions. [2022-09-16 11:45:20,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:20,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1528 transitions. [2022-09-16 11:45:20,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 509.3333333333333) internal successors, (1528), 3 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:20,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:20,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:20,862 INFO L175 Difference]: Start difference. First operand has 508 places, 512 transitions, 1112 flow. Second operand 3 states and 1528 transitions. [2022-09-16 11:45:20,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 544 transitions, 1325 flow [2022-09-16 11:45:20,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 544 transitions, 1294 flow, removed 3 selfloop flow, removed 13 redundant places. [2022-09-16 11:45:20,944 INFO L231 Difference]: Finished difference. Result has 499 places, 513 transitions, 1095 flow [2022-09-16 11:45:20,945 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1095, PETRI_PLACES=499, PETRI_TRANSITIONS=513} [2022-09-16 11:45:20,946 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 16 predicate places. [2022-09-16 11:45:20,946 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 513 transitions, 1095 flow [2022-09-16 11:45:20,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 487.6666666666667) internal successors, (1463), 3 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:20,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:20,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:20,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:45:20,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:45:20,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:20,947 INFO L85 PathProgramCache]: Analyzing trace with hash 425739210, now seen corresponding path program 1 times [2022-09-16 11:45:20,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:20,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733682895] [2022-09-16 11:45:20,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:20,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:21,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:21,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733682895] [2022-09-16 11:45:21,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733682895] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:45:21,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742782553] [2022-09-16 11:45:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:21,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:45:21,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:45:21,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:45:21,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:45:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:21,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:45:21,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:45:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:21,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:45:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:21,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742782553] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:45:21,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:45:21,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-09-16 11:45:21,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133653802] [2022-09-16 11:45:21,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:45:21,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-16 11:45:21,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:21,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-16 11:45:21,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:45:21,250 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 546 [2022-09-16 11:45:21,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 513 transitions, 1095 flow. Second operand has 14 states, 14 states have (on average 505.85714285714283) internal successors, (7082), 14 states have internal predecessors, (7082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:21,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:21,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 546 [2022-09-16 11:45:21,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:21,465 INFO L130 PetriNetUnfolder]: 39/681 cut-off events. [2022-09-16 11:45:21,465 INFO L131 PetriNetUnfolder]: For 13/19 co-relation queries the response was YES. [2022-09-16 11:45:21,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 681 events. 39/681 cut-off events. For 13/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2738 event pairs, 0 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 756. Up to 16 conditions per place. [2022-09-16 11:45:21,484 INFO L137 encePairwiseOnDemand]: 539/546 looper letters, 24 selfloop transitions, 10 changer transitions 0/518 dead transitions. [2022-09-16 11:45:21,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 518 transitions, 1171 flow [2022-09-16 11:45:21,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:45:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:45:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5569 transitions. [2022-09-16 11:45:21,493 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9272394272394272 [2022-09-16 11:45:21,493 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5569 transitions. [2022-09-16 11:45:21,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5569 transitions. [2022-09-16 11:45:21,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:21,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5569 transitions. [2022-09-16 11:45:21,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 506.27272727272725) internal successors, (5569), 11 states have internal predecessors, (5569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:21,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 546.0) internal successors, (6552), 12 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:21,516 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 546.0) internal successors, (6552), 12 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:21,516 INFO L175 Difference]: Start difference. First operand has 499 places, 513 transitions, 1095 flow. Second operand 11 states and 5569 transitions. [2022-09-16 11:45:21,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 518 transitions, 1171 flow [2022-09-16 11:45:21,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 518 transitions, 1169 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:45:21,526 INFO L231 Difference]: Finished difference. Result has 507 places, 511 transitions, 1103 flow [2022-09-16 11:45:21,528 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1103, PETRI_PLACES=507, PETRI_TRANSITIONS=511} [2022-09-16 11:45:21,530 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 24 predicate places. [2022-09-16 11:45:21,530 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 511 transitions, 1103 flow [2022-09-16 11:45:21,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 505.85714285714283) internal successors, (7082), 14 states have internal predecessors, (7082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:21,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:21,532 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:21,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:45:21,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:45:21,750 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:45:21,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:21,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1608768150, now seen corresponding path program 2 times [2022-09-16 11:45:21,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:21,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519543245] [2022-09-16 11:45:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:21,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:45:21,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:21,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519543245] [2022-09-16 11:45:21,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519543245] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:21,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:21,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:45:21,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592114946] [2022-09-16 11:45:21,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:21,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:21,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:21,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:21,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:45:21,841 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 546 [2022-09-16 11:45:21,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 511 transitions, 1103 flow. Second operand has 6 states, 6 states have (on average 480.1666666666667) internal successors, (2881), 6 states have internal predecessors, (2881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:21,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:21,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 546 [2022-09-16 11:45:21,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:22,955 INFO L130 PetriNetUnfolder]: 820/4625 cut-off events. [2022-09-16 11:45:22,955 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2022-09-16 11:45:23,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6343 conditions, 4625 events. 820/4625 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 44026 event pairs, 186 based on Foata normal form. 0/3837 useless extension candidates. Maximal degree in co-relation 6333. Up to 814 conditions per place. [2022-09-16 11:45:23,039 INFO L137 encePairwiseOnDemand]: 540/546 looper letters, 66 selfloop transitions, 5 changer transitions 0/534 dead transitions. [2022-09-16 11:45:23,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 534 transitions, 1299 flow [2022-09-16 11:45:23,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:45:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:45:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2939 transitions. [2022-09-16 11:45:23,044 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8971306471306472 [2022-09-16 11:45:23,044 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2939 transitions. [2022-09-16 11:45:23,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2939 transitions. [2022-09-16 11:45:23,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:23,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2939 transitions. [2022-09-16 11:45:23,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 489.8333333333333) internal successors, (2939), 6 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:23,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:23,051 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:23,051 INFO L175 Difference]: Start difference. First operand has 507 places, 511 transitions, 1103 flow. Second operand 6 states and 2939 transitions. [2022-09-16 11:45:23,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 534 transitions, 1299 flow [2022-09-16 11:45:23,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 534 transitions, 1279 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-09-16 11:45:23,058 INFO L231 Difference]: Finished difference. Result has 501 places, 510 transitions, 1091 flow [2022-09-16 11:45:23,059 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1091, PETRI_PLACES=501, PETRI_TRANSITIONS=510} [2022-09-16 11:45:23,060 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 18 predicate places. [2022-09-16 11:45:23,060 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 510 transitions, 1091 flow [2022-09-16 11:45:23,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 480.1666666666667) internal successors, (2881), 6 states have internal predecessors, (2881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:23,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:23,061 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:23,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:45:23,061 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:45:23,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:23,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1667796298, now seen corresponding path program 1 times [2022-09-16 11:45:23,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:23,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728760635] [2022-09-16 11:45:23,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:23,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:45:23,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:23,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728760635] [2022-09-16 11:45:23,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728760635] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:23,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:23,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:45:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795191384] [2022-09-16 11:45:23,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:23,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:45:23,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:23,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:45:23,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:45:23,098 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 546 [2022-09-16 11:45:23,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 510 transitions, 1091 flow. Second operand has 4 states, 4 states have (on average 498.75) internal successors, (1995), 4 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:23,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:23,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 546 [2022-09-16 11:45:23,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:23,557 INFO L130 PetriNetUnfolder]: 237/2211 cut-off events. [2022-09-16 11:45:23,557 INFO L131 PetriNetUnfolder]: For 22/28 co-relation queries the response was YES. [2022-09-16 11:45:23,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 2211 events. 237/2211 cut-off events. For 22/28 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 15931 event pairs, 48 based on Foata normal form. 0/1877 useless extension candidates. Maximal degree in co-relation 2736. Up to 140 conditions per place. [2022-09-16 11:45:23,592 INFO L137 encePairwiseOnDemand]: 540/546 looper letters, 37 selfloop transitions, 4 changer transitions 0/524 dead transitions. [2022-09-16 11:45:23,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 524 transitions, 1209 flow [2022-09-16 11:45:23,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:45:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:45:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2031 transitions. [2022-09-16 11:45:23,596 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.929945054945055 [2022-09-16 11:45:23,596 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2031 transitions. [2022-09-16 11:45:23,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2031 transitions. [2022-09-16 11:45:23,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:23,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2031 transitions. [2022-09-16 11:45:23,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 507.75) internal successors, (2031), 4 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:23,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 546.0) internal successors, (2730), 5 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:23,601 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 546.0) internal successors, (2730), 5 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:23,601 INFO L175 Difference]: Start difference. First operand has 501 places, 510 transitions, 1091 flow. Second operand 4 states and 2031 transitions. [2022-09-16 11:45:23,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 524 transitions, 1209 flow [2022-09-16 11:45:23,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 524 transitions, 1200 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:45:23,608 INFO L231 Difference]: Finished difference. Result has 502 places, 511 transitions, 1106 flow [2022-09-16 11:45:23,609 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1106, PETRI_PLACES=502, PETRI_TRANSITIONS=511} [2022-09-16 11:45:23,610 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 19 predicate places. [2022-09-16 11:45:23,610 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 511 transitions, 1106 flow [2022-09-16 11:45:23,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 498.75) internal successors, (1995), 4 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:23,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:23,611 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:23,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:45:23,611 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:45:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash -982591613, now seen corresponding path program 1 times [2022-09-16 11:45:23,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:23,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342658605] [2022-09-16 11:45:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:23,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:45:23,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:23,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342658605] [2022-09-16 11:45:23,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342658605] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:23,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:23,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:45:23,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812457738] [2022-09-16 11:45:23,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:23,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:23,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:23,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:45:23,670 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 546 [2022-09-16 11:45:23,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 511 transitions, 1106 flow. Second operand has 6 states, 6 states have (on average 480.3333333333333) internal successors, (2882), 6 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:23,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:23,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 546 [2022-09-16 11:45:23,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:26,630 INFO L130 PetriNetUnfolder]: 5240/19181 cut-off events. [2022-09-16 11:45:26,631 INFO L131 PetriNetUnfolder]: For 1968/2115 co-relation queries the response was YES. [2022-09-16 11:45:26,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25911 conditions, 19181 events. 5240/19181 cut-off events. For 1968/2115 co-relation queries the response was YES. Maximal size of possible extension queue 1539. Compared 242408 event pairs, 1302 based on Foata normal form. 0/13639 useless extension candidates. Maximal degree in co-relation 25899. Up to 4036 conditions per place. [2022-09-16 11:45:26,908 INFO L137 encePairwiseOnDemand]: 540/546 looper letters, 64 selfloop transitions, 5 changer transitions 0/533 dead transitions. [2022-09-16 11:45:26,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 533 transitions, 1295 flow [2022-09-16 11:45:26,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:45:26,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:45:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2938 transitions. [2022-09-16 11:45:26,915 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8968253968253969 [2022-09-16 11:45:26,915 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2938 transitions. [2022-09-16 11:45:26,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2938 transitions. [2022-09-16 11:45:26,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:26,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2938 transitions. [2022-09-16 11:45:26,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 489.6666666666667) internal successors, (2938), 6 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:26,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:26,921 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:26,921 INFO L175 Difference]: Start difference. First operand has 502 places, 511 transitions, 1106 flow. Second operand 6 states and 2938 transitions. [2022-09-16 11:45:26,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 533 transitions, 1295 flow [2022-09-16 11:45:26,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 533 transitions, 1295 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:45:26,928 INFO L231 Difference]: Finished difference. Result has 506 places, 510 transitions, 1114 flow [2022-09-16 11:45:26,928 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1114, PETRI_PLACES=506, PETRI_TRANSITIONS=510} [2022-09-16 11:45:26,929 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 23 predicate places. [2022-09-16 11:45:26,929 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 510 transitions, 1114 flow [2022-09-16 11:45:26,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 480.3333333333333) internal successors, (2882), 6 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:26,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:26,930 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:26,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:45:26,930 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:45:26,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash -594909425, now seen corresponding path program 1 times [2022-09-16 11:45:26,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:26,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951419650] [2022-09-16 11:45:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:26,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:45:26,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:26,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951419650] [2022-09-16 11:45:26,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951419650] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:26,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:26,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:45:26,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428001589] [2022-09-16 11:45:26,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:26,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:45:26,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:26,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:45:26,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:45:26,960 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 546 [2022-09-16 11:45:26,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 510 transitions, 1114 flow. Second operand has 4 states, 4 states have (on average 503.5) internal successors, (2014), 4 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:26,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:26,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 546 [2022-09-16 11:45:26,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:27,538 INFO L130 PetriNetUnfolder]: 286/2360 cut-off events. [2022-09-16 11:45:27,539 INFO L131 PetriNetUnfolder]: For 176/312 co-relation queries the response was YES. [2022-09-16 11:45:27,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 2360 events. 286/2360 cut-off events. For 176/312 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 18891 event pairs, 70 based on Foata normal form. 0/1951 useless extension candidates. Maximal degree in co-relation 2891. Up to 292 conditions per place. [2022-09-16 11:45:27,590 INFO L137 encePairwiseOnDemand]: 541/546 looper letters, 34 selfloop transitions, 4 changer transitions 0/524 dead transitions. [2022-09-16 11:45:27,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 524 transitions, 1228 flow [2022-09-16 11:45:27,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:45:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:45:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2544 transitions. [2022-09-16 11:45:27,595 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9318681318681319 [2022-09-16 11:45:27,595 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2544 transitions. [2022-09-16 11:45:27,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2544 transitions. [2022-09-16 11:45:27,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:27,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2544 transitions. [2022-09-16 11:45:27,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 508.8) internal successors, (2544), 5 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:27,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 546.0) internal successors, (3276), 6 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:27,600 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 546.0) internal successors, (3276), 6 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:27,601 INFO L175 Difference]: Start difference. First operand has 506 places, 510 transitions, 1114 flow. Second operand 5 states and 2544 transitions. [2022-09-16 11:45:27,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 524 transitions, 1228 flow [2022-09-16 11:45:27,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 524 transitions, 1219 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:45:27,607 INFO L231 Difference]: Finished difference. Result has 509 places, 513 transitions, 1133 flow [2022-09-16 11:45:27,607 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1133, PETRI_PLACES=509, PETRI_TRANSITIONS=513} [2022-09-16 11:45:27,608 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 26 predicate places. [2022-09-16 11:45:27,608 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 513 transitions, 1133 flow [2022-09-16 11:45:27,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 503.5) internal successors, (2014), 4 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:27,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:27,608 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:27,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:45:27,609 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:45:27,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:27,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1388201233, now seen corresponding path program 1 times [2022-09-16 11:45:27,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:27,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397800745] [2022-09-16 11:45:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:27,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:45:27,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:27,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397800745] [2022-09-16 11:45:27,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397800745] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:27,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:27,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:45:27,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121771328] [2022-09-16 11:45:27,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:27,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:45:27,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:27,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:45:27,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:45:27,638 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 485 out of 546 [2022-09-16 11:45:27,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 513 transitions, 1133 flow. Second operand has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:27,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:27,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 485 of 546 [2022-09-16 11:45:27,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:42,611 INFO L130 PetriNetUnfolder]: 19415/99263 cut-off events. [2022-09-16 11:45:42,612 INFO L131 PetriNetUnfolder]: For 3553/3553 co-relation queries the response was YES. [2022-09-16 11:45:43,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129656 conditions, 99263 events. 19415/99263 cut-off events. For 3553/3553 co-relation queries the response was YES. Maximal size of possible extension queue 2525. Compared 1604405 event pairs, 6118 based on Foata normal form. 0/80000 useless extension candidates. Maximal degree in co-relation 129640. Up to 12843 conditions per place. [2022-09-16 11:45:44,354 INFO L137 encePairwiseOnDemand]: 543/546 looper letters, 71 selfloop transitions, 2 changer transitions 0/545 dead transitions. [2022-09-16 11:45:44,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 545 transitions, 1357 flow [2022-09-16 11:45:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:45:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:45:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1527 transitions. [2022-09-16 11:45:44,357 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9322344322344323 [2022-09-16 11:45:44,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1527 transitions. [2022-09-16 11:45:44,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1527 transitions. [2022-09-16 11:45:44,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:44,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1527 transitions. [2022-09-16 11:45:44,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 509.0) internal successors, (1527), 3 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:44,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:44,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:44,361 INFO L175 Difference]: Start difference. First operand has 509 places, 513 transitions, 1133 flow. Second operand 3 states and 1527 transitions. [2022-09-16 11:45:44,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 545 transitions, 1357 flow [2022-09-16 11:45:44,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 545 transitions, 1355 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:45:44,475 INFO L231 Difference]: Finished difference. Result has 512 places, 514 transitions, 1145 flow [2022-09-16 11:45:44,476 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1145, PETRI_PLACES=512, PETRI_TRANSITIONS=514} [2022-09-16 11:45:44,476 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 29 predicate places. [2022-09-16 11:45:44,476 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 514 transitions, 1145 flow [2022-09-16 11:45:44,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:44,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:44,477 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:44,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:45:44,477 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:45:44,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:44,477 INFO L85 PathProgramCache]: Analyzing trace with hash -395567409, now seen corresponding path program 1 times [2022-09-16 11:45:44,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:44,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996835812] [2022-09-16 11:45:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:44,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:45:44,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:44,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996835812] [2022-09-16 11:45:44,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996835812] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:44,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:44,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:45:44,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474595230] [2022-09-16 11:45:44,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:44,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:45:44,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:44,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:45:44,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:45:44,510 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 546 [2022-09-16 11:45:44,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 514 transitions, 1145 flow. Second operand has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:44,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:44,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 546 [2022-09-16 11:45:44,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:45,592 INFO L130 PetriNetUnfolder]: 564/3410 cut-off events. [2022-09-16 11:45:45,593 INFO L131 PetriNetUnfolder]: For 458/1828 co-relation queries the response was YES. [2022-09-16 11:45:45,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 3410 events. 564/3410 cut-off events. For 458/1828 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 34729 event pairs, 192 based on Foata normal form. 0/2647 useless extension candidates. Maximal degree in co-relation 4666. Up to 474 conditions per place. [2022-09-16 11:45:45,710 INFO L137 encePairwiseOnDemand]: 540/546 looper letters, 36 selfloop transitions, 4 changer transitions 0/527 dead transitions. [2022-09-16 11:45:45,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 527 transitions, 1258 flow [2022-09-16 11:45:45,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:45:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:45:45,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2030 transitions. [2022-09-16 11:45:45,714 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9294871794871795 [2022-09-16 11:45:45,714 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2030 transitions. [2022-09-16 11:45:45,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2030 transitions. [2022-09-16 11:45:45,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:45,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2030 transitions. [2022-09-16 11:45:45,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 507.5) internal successors, (2030), 4 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:45,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 546.0) internal successors, (2730), 5 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:45,719 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 546.0) internal successors, (2730), 5 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:45,719 INFO L175 Difference]: Start difference. First operand has 512 places, 514 transitions, 1145 flow. Second operand 4 states and 2030 transitions. [2022-09-16 11:45:45,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 527 transitions, 1258 flow [2022-09-16 11:45:45,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 527 transitions, 1256 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:45:45,726 INFO L231 Difference]: Finished difference. Result has 516 places, 515 transitions, 1167 flow [2022-09-16 11:45:45,727 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1167, PETRI_PLACES=516, PETRI_TRANSITIONS=515} [2022-09-16 11:45:45,727 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 33 predicate places. [2022-09-16 11:45:45,727 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 515 transitions, 1167 flow [2022-09-16 11:45:45,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:45,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:45,728 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:45,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:45:45,728 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:45:45,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:45,728 INFO L85 PathProgramCache]: Analyzing trace with hash -676884617, now seen corresponding path program 1 times [2022-09-16 11:45:45,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:45,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087813208] [2022-09-16 11:45:45,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:45,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:45,760 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:45:45,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:45,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087813208] [2022-09-16 11:45:45,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087813208] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:45,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:45,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:45:45,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597521727] [2022-09-16 11:45:45,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:45,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:45:45,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:45,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:45:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:45:45,762 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 546 [2022-09-16 11:45:45,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 515 transitions, 1167 flow. Second operand has 4 states, 4 states have (on average 499.25) internal successors, (1997), 4 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:45,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:45,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 546 [2022-09-16 11:45:45,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:46,539 INFO L130 PetriNetUnfolder]: 266/3456 cut-off events. [2022-09-16 11:45:46,539 INFO L131 PetriNetUnfolder]: For 156/1304 co-relation queries the response was YES. [2022-09-16 11:45:46,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4295 conditions, 3456 events. 266/3456 cut-off events. For 156/1304 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 30047 event pairs, 48 based on Foata normal form. 16/3013 useless extension candidates. Maximal degree in co-relation 4276. Up to 164 conditions per place. [2022-09-16 11:45:46,656 INFO L137 encePairwiseOnDemand]: 542/546 looper letters, 37 selfloop transitions, 3 changer transitions 0/527 dead transitions. [2022-09-16 11:45:46,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 527 transitions, 1275 flow [2022-09-16 11:45:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:45:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:45:46,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2029 transitions. [2022-09-16 11:45:46,659 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9290293040293041 [2022-09-16 11:45:46,659 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2029 transitions. [2022-09-16 11:45:46,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2029 transitions. [2022-09-16 11:45:46,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:46,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2029 transitions. [2022-09-16 11:45:46,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 507.25) internal successors, (2029), 4 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:46,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 546.0) internal successors, (2730), 5 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:46,663 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 546.0) internal successors, (2730), 5 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:46,663 INFO L175 Difference]: Start difference. First operand has 516 places, 515 transitions, 1167 flow. Second operand 4 states and 2029 transitions. [2022-09-16 11:45:46,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 527 transitions, 1275 flow [2022-09-16 11:45:46,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 527 transitions, 1273 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:45:46,671 INFO L231 Difference]: Finished difference. Result has 518 places, 514 transitions, 1165 flow [2022-09-16 11:45:46,671 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1165, PETRI_PLACES=518, PETRI_TRANSITIONS=514} [2022-09-16 11:45:46,672 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 35 predicate places. [2022-09-16 11:45:46,672 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 514 transitions, 1165 flow [2022-09-16 11:45:46,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 499.25) internal successors, (1997), 4 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:46,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:46,672 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:46,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:45:46,673 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:45:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash 491414779, now seen corresponding path program 1 times [2022-09-16 11:45:46,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:46,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149412824] [2022-09-16 11:45:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:46,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:45:46,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:46,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149412824] [2022-09-16 11:45:46,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149412824] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:46,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:46,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:45:46,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566927326] [2022-09-16 11:45:46,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:46,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:46,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:46,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:46,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:45:46,719 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 546 [2022-09-16 11:45:46,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 514 transitions, 1165 flow. Second operand has 6 states, 6 states have (on average 480.5) internal successors, (2883), 6 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:46,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:46,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 546 [2022-09-16 11:45:46,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:49,244 INFO L130 PetriNetUnfolder]: 1327/7498 cut-off events. [2022-09-16 11:45:49,244 INFO L131 PetriNetUnfolder]: For 700/50504 co-relation queries the response was YES. [2022-09-16 11:45:49,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10655 conditions, 7498 events. 1327/7498 cut-off events. For 700/50504 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 82159 event pairs, 348 based on Foata normal form. 8/6033 useless extension candidates. Maximal degree in co-relation 10636. Up to 1552 conditions per place. [2022-09-16 11:45:49,510 INFO L137 encePairwiseOnDemand]: 540/546 looper letters, 64 selfloop transitions, 5 changer transitions 0/537 dead transitions. [2022-09-16 11:45:49,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 537 transitions, 1357 flow [2022-09-16 11:45:49,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:45:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:45:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2937 transitions. [2022-09-16 11:45:49,512 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8965201465201466 [2022-09-16 11:45:49,512 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2937 transitions. [2022-09-16 11:45:49,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2937 transitions. [2022-09-16 11:45:49,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:49,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2937 transitions. [2022-09-16 11:45:49,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 489.5) internal successors, (2937), 6 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,518 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,518 INFO L175 Difference]: Start difference. First operand has 518 places, 514 transitions, 1165 flow. Second operand 6 states and 2937 transitions. [2022-09-16 11:45:49,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 537 transitions, 1357 flow [2022-09-16 11:45:49,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 537 transitions, 1352 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:45:49,526 INFO L231 Difference]: Finished difference. Result has 520 places, 513 transitions, 1168 flow [2022-09-16 11:45:49,527 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1168, PETRI_PLACES=520, PETRI_TRANSITIONS=513} [2022-09-16 11:45:49,527 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 37 predicate places. [2022-09-16 11:45:49,528 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 513 transitions, 1168 flow [2022-09-16 11:45:49,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 480.5) internal successors, (2883), 6 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:49,528 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:49,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:45:49,528 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:45:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:49,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1323246721, now seen corresponding path program 1 times [2022-09-16 11:45:49,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:49,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153473612] [2022-09-16 11:45:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:49,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:45:49,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:49,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153473612] [2022-09-16 11:45:49,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153473612] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:49,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:49,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:45:49,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336724149] [2022-09-16 11:45:49,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:49,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:45:49,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:49,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:45:49,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:45:49,555 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 493 out of 546 [2022-09-16 11:45:49,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 513 transitions, 1168 flow. Second operand has 3 states, 3 states have (on average 497.0) internal successors, (1491), 3 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:49,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 493 of 546 [2022-09-16 11:45:49,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:55,697 INFO L130 PetriNetUnfolder]: 3726/32397 cut-off events. [2022-09-16 11:45:55,697 INFO L131 PetriNetUnfolder]: For 1204/1204 co-relation queries the response was YES. [2022-09-16 11:45:56,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42527 conditions, 32397 events. 3726/32397 cut-off events. For 1204/1204 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 464730 event pairs, 1432 based on Foata normal form. 0/27804 useless extension candidates. Maximal degree in co-relation 42508. Up to 2727 conditions per place. [2022-09-16 11:45:56,748 INFO L137 encePairwiseOnDemand]: 542/546 looper letters, 52 selfloop transitions, 3 changer transitions 0/534 dead transitions. [2022-09-16 11:45:56,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 534 transitions, 1337 flow [2022-09-16 11:45:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:45:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:45:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1532 transitions. [2022-09-16 11:45:56,750 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9352869352869353 [2022-09-16 11:45:56,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1532 transitions. [2022-09-16 11:45:56,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1532 transitions. [2022-09-16 11:45:56,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:56,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1532 transitions. [2022-09-16 11:45:56,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 510.6666666666667) internal successors, (1532), 3 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:56,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:56,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:56,753 INFO L175 Difference]: Start difference. First operand has 520 places, 513 transitions, 1168 flow. Second operand 3 states and 1532 transitions. [2022-09-16 11:45:56,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 534 transitions, 1337 flow [2022-09-16 11:45:56,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 534 transitions, 1326 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:45:56,779 INFO L231 Difference]: Finished difference. Result has 520 places, 515 transitions, 1181 flow [2022-09-16 11:45:56,780 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1181, PETRI_PLACES=520, PETRI_TRANSITIONS=515} [2022-09-16 11:45:56,780 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 37 predicate places. [2022-09-16 11:45:56,780 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 515 transitions, 1181 flow [2022-09-16 11:45:56,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 497.0) internal successors, (1491), 3 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:56,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:56,781 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:56,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:45:56,781 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:45:56,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:56,781 INFO L85 PathProgramCache]: Analyzing trace with hash -219426913, now seen corresponding path program 1 times [2022-09-16 11:45:56,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:56,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827454585] [2022-09-16 11:45:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:56,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:45:56,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:56,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827454585] [2022-09-16 11:45:56,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827454585] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:56,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:56,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:45:56,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459432449] [2022-09-16 11:45:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:56,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:45:56,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:45:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:45:56,807 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 485 out of 546 [2022-09-16 11:45:56,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 515 transitions, 1181 flow. Second operand has 3 states, 3 states have (on average 488.6666666666667) internal successors, (1466), 3 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:56,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:56,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 485 of 546 [2022-09-16 11:45:56,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:30,918 INFO L130 PetriNetUnfolder]: 27189/192930 cut-off events. [2022-09-16 11:46:30,919 INFO L131 PetriNetUnfolder]: For 13069/14109 co-relation queries the response was YES. [2022-09-16 11:46:34,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251874 conditions, 192930 events. 27189/192930 cut-off events. For 13069/14109 co-relation queries the response was YES. Maximal size of possible extension queue 3552. Compared 3548582 event pairs, 10858 based on Foata normal form. 50/163490 useless extension candidates. Maximal degree in co-relation 251854. Up to 17814 conditions per place. [2022-09-16 11:46:34,721 INFO L137 encePairwiseOnDemand]: 544/546 looper letters, 74 selfloop transitions, 1 changer transitions 0/547 dead transitions. [2022-09-16 11:46:34,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 547 transitions, 1419 flow [2022-09-16 11:46:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:46:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:46:34,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1527 transitions. [2022-09-16 11:46:34,723 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9322344322344323 [2022-09-16 11:46:34,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1527 transitions. [2022-09-16 11:46:34,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1527 transitions. [2022-09-16 11:46:34,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:34,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1527 transitions. [2022-09-16 11:46:34,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 509.0) internal successors, (1527), 3 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:34,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:34,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:34,726 INFO L175 Difference]: Start difference. First operand has 520 places, 515 transitions, 1181 flow. Second operand 3 states and 1527 transitions. [2022-09-16 11:46:34,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 547 transitions, 1419 flow [2022-09-16 11:46:35,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 547 transitions, 1409 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:46:35,481 INFO L231 Difference]: Finished difference. Result has 520 places, 514 transitions, 1172 flow [2022-09-16 11:46:35,481 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1172, PETRI_PLACES=520, PETRI_TRANSITIONS=514} [2022-09-16 11:46:35,482 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 37 predicate places. [2022-09-16 11:46:35,482 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 514 transitions, 1172 flow [2022-09-16 11:46:35,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 488.6666666666667) internal successors, (1466), 3 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:35,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:35,482 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:35,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:46:35,482 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:46:35,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:35,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2122208353, now seen corresponding path program 1 times [2022-09-16 11:46:35,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:35,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693507302] [2022-09-16 11:46:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:35,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:46:35,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:35,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693507302] [2022-09-16 11:46:35,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693507302] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:35,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:35,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:46:35,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275320127] [2022-09-16 11:46:35,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:35,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:35,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:35,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:35,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:46:35,524 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 476 out of 546 [2022-09-16 11:46:35,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 514 transitions, 1172 flow. Second operand has 6 states, 6 states have (on average 479.8333333333333) internal successors, (2879), 6 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:35,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:35,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 476 of 546 [2022-09-16 11:46:35,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:44,696 INFO L130 PetriNetUnfolder]: 3989/26783 cut-off events. [2022-09-16 11:46:44,696 INFO L131 PetriNetUnfolder]: For 2558/191944 co-relation queries the response was YES. [2022-09-16 11:46:45,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36134 conditions, 26783 events. 3989/26783 cut-off events. For 2558/191944 co-relation queries the response was YES. Maximal size of possible extension queue 1483. Compared 384486 event pairs, 1315 based on Foata normal form. 33/21566 useless extension candidates. Maximal degree in co-relation 36114. Up to 2394 conditions per place. [2022-09-16 11:46:46,205 INFO L137 encePairwiseOnDemand]: 529/546 looper letters, 125 selfloop transitions, 19 changer transitions 0/604 dead transitions. [2022-09-16 11:46:46,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 604 transitions, 1683 flow [2022-09-16 11:46:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:46:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:46:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3473 transitions. [2022-09-16 11:46:46,209 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9086865515436944 [2022-09-16 11:46:46,209 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3473 transitions. [2022-09-16 11:46:46,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3473 transitions. [2022-09-16 11:46:46,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:46,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3473 transitions. [2022-09-16 11:46:46,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 496.14285714285717) internal successors, (3473), 7 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:46,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 546.0) internal successors, (4368), 8 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:46,238 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 546.0) internal successors, (4368), 8 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:46,238 INFO L175 Difference]: Start difference. First operand has 520 places, 514 transitions, 1172 flow. Second operand 7 states and 3473 transitions. [2022-09-16 11:46:46,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 604 transitions, 1683 flow [2022-09-16 11:46:46,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 604 transitions, 1682 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:46:46,254 INFO L231 Difference]: Finished difference. Result has 530 places, 527 transitions, 1307 flow [2022-09-16 11:46:46,254 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1307, PETRI_PLACES=530, PETRI_TRANSITIONS=527} [2022-09-16 11:46:46,255 INFO L287 CegarLoopForPetriNet]: 483 programPoint places, 47 predicate places. [2022-09-16 11:46:46,255 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 527 transitions, 1307 flow [2022-09-16 11:46:46,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 479.8333333333333) internal successors, (2879), 6 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:46,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:46,256 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:46,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:46:46,256 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:46:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash -178940929, now seen corresponding path program 1 times [2022-09-16 11:46:46,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:46,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907144317] [2022-09-16 11:46:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:46,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:46:46,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:46,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907144317] [2022-09-16 11:46:46,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907144317] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:46,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:46,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:46:46,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752585365] [2022-09-16 11:46:46,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:46,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:46:46,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:46,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:46:46,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:46:46,293 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 507 out of 546 [2022-09-16 11:46:46,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 527 transitions, 1307 flow. Second operand has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:46,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:46,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 507 of 546 [2022-09-16 11:46:46,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand