/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/parallel-misc-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:49:46,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:49:46,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:49:46,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:49:46,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:49:46,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:49:46,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:49:46,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:49:46,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:49:46,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:49:46,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:49:46,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:49:46,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:49:46,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:49:46,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:49:46,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:49:46,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:49:46,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:49:46,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:49:46,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:49:46,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:49:46,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:49:46,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:49:46,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:49:46,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:49:46,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:49:46,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:49:46,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:49:46,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:49:46,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:49:46,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:49:46,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:49:46,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:49:46,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:49:46,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:49:46,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:49:46,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:49:46,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:49:46,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:49:46,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:49:46,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:49:46,887 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 11:49:46,914 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:49:46,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:49:46,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:49:46,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:49:46,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:49:46,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:49:46,915 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:49:46,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:49:46,916 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:49:46,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:49:46,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:49:46,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:49:46,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:49:46,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:49:46,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:49:46,917 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:49:46,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:49:46,917 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:49:46,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:49:46,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:49:46,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:49:46,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:49:46,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:49:46,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:49:46,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:49:46,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:49:46,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:49:46,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:49:46,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:49:46,918 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:49:46,919 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:49:46,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:49:47,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:49:47,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:49:47,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:49:47,107 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:49:47,107 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:49:47,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2022-09-16 11:49:47,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a887c780/185bb0107dee4910860ade4b984f65f0/FLAGc4cfcd04e [2022-09-16 11:49:47,444 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:49:47,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2022-09-16 11:49:47,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a887c780/185bb0107dee4910860ade4b984f65f0/FLAGc4cfcd04e [2022-09-16 11:49:47,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a887c780/185bb0107dee4910860ade4b984f65f0 [2022-09-16 11:49:47,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:49:47,881 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:49:47,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:49:47,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:49:47,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:49:47,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:49:47" (1/1) ... [2022-09-16 11:49:47,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2920c47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:47, skipping insertion in model container [2022-09-16 11:49:47,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:49:47" (1/1) ... [2022-09-16 11:49:47,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:49:47,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:49:48,030 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/parallel-misc-1.wvr.c[2755,2768] [2022-09-16 11:49:48,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:49:48,038 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:49:48,052 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/parallel-misc-1.wvr.c[2755,2768] [2022-09-16 11:49:48,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:49:48,063 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:49:48,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:48 WrapperNode [2022-09-16 11:49:48,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:49:48,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:49:48,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:49:48,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:49:48,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:48" (1/1) ... [2022-09-16 11:49:48,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:48" (1/1) ... [2022-09-16 11:49:48,095 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 395 [2022-09-16 11:49:48,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:49:48,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:49:48,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:49:48,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:49:48,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:48" (1/1) ... [2022-09-16 11:49:48,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:48" (1/1) ... [2022-09-16 11:49:48,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:48" (1/1) ... [2022-09-16 11:49:48,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:48" (1/1) ... [2022-09-16 11:49:48,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:48" (1/1) ... [2022-09-16 11:49:48,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:48" (1/1) ... [2022-09-16 11:49:48,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:48" (1/1) ... [2022-09-16 11:49:48,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:49:48,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:49:48,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:49:48,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:49:48,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:48" (1/1) ... [2022-09-16 11:49:48,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:49:48,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:49:48,154 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 11:49:48,160 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 11:49:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:49:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:49:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:49:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:49:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:49:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:49:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:49:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:49:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:49:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:49:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:49:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:49:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:49:48,204 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 11:49:48,269 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:49:48,270 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:49:48,769 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:49:48,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:49:48,782 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:49:48,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:49:48 BoogieIcfgContainer [2022-09-16 11:49:48,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:49:48,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:49:48,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:49:48,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:49:48,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:49:47" (1/3) ... [2022-09-16 11:49:48,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78524211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:49:48, skipping insertion in model container [2022-09-16 11:49:48,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:48" (2/3) ... [2022-09-16 11:49:48,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78524211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:49:48, skipping insertion in model container [2022-09-16 11:49:48,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:49:48" (3/3) ... [2022-09-16 11:49:48,793 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-09-16 11:49:48,804 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:49:48,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2022-09-16 11:49:48,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:49:48,920 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:49:48,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 583 transitions, 1182 flow [2022-09-16 11:49:49,130 INFO L130 PetriNetUnfolder]: 44/581 cut-off events. [2022-09-16 11:49:49,131 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:49:49,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 581 events. 44/581 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1858 event pairs, 0 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2022-09-16 11:49:49,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 583 transitions, 1182 flow [2022-09-16 11:49:49,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 526 places, 562 transitions, 1133 flow [2022-09-16 11:49:49,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:49:49,179 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;@299e6361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:49:49,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2022-09-16 11:49:49,188 INFO L130 PetriNetUnfolder]: 3/87 cut-off events. [2022-09-16 11:49:49,189 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:49:49,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:49,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:49,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:49:49,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:49,195 INFO L85 PathProgramCache]: Analyzing trace with hash 25266818, now seen corresponding path program 1 times [2022-09-16 11:49:49,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:49,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784638539] [2022-09-16 11:49:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:49,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:49:49,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:49,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784638539] [2022-09-16 11:49:49,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784638539] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:49,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:49,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:49:49,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835282797] [2022-09-16 11:49:49,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:49,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:49:49,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:49,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:49:49,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:49:49,446 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-09-16 11:49:49,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 562 transitions, 1133 flow. Second operand has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:49,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:49,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-09-16 11:49:49,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:49,759 INFO L130 PetriNetUnfolder]: 41/1004 cut-off events. [2022-09-16 11:49:49,759 INFO L131 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2022-09-16 11:49:49,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 1004 events. 41/1004 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5141 event pairs, 0 based on Foata normal form. 52/872 useless extension candidates. Maximal degree in co-relation 590. Up to 16 conditions per place. [2022-09-16 11:49:49,777 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 22 selfloop transitions, 4 changer transitions 3/551 dead transitions. [2022-09-16 11:49:49,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 551 transitions, 1172 flow [2022-09-16 11:49:49,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:49:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:49:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2785 transitions. [2022-09-16 11:49:49,795 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9554030874785592 [2022-09-16 11:49:49,796 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2785 transitions. [2022-09-16 11:49:49,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2785 transitions. [2022-09-16 11:49:49,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:49,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2785 transitions. [2022-09-16 11:49:49,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 557.0) internal successors, (2785), 5 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:49,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:49,822 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:49,823 INFO L175 Difference]: Start difference. First operand has 526 places, 562 transitions, 1133 flow. Second operand 5 states and 2785 transitions. [2022-09-16 11:49:49,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 551 transitions, 1172 flow [2022-09-16 11:49:49,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 551 transitions, 1162 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:49:49,838 INFO L231 Difference]: Finished difference. Result has 530 places, 540 transitions, 1108 flow [2022-09-16 11:49:49,840 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1108, PETRI_PLACES=530, PETRI_TRANSITIONS=540} [2022-09-16 11:49:49,843 INFO L287 CegarLoopForPetriNet]: 526 programPoint places, 4 predicate places. [2022-09-16 11:49:49,843 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 540 transitions, 1108 flow [2022-09-16 11:49:49,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:49,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:49,845 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] [2022-09-16 11:49:49,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:49:49,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:49:49,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:49,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2120409065, now seen corresponding path program 1 times [2022-09-16 11:49:49,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:49,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75909093] [2022-09-16 11:49:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:49,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:49,927 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 11:49:49,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:49,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75909093] [2022-09-16 11:49:49,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75909093] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:49:49,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661110552] [2022-09-16 11:49:49,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:49,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:49:49,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:49:49,930 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 11:49:49,932 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 11:49:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:50,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:49:50,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:49:50,098 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 11:49:50,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:49:50,143 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 11:49:50,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661110552] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:49:50,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:49:50,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:49:50,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392816479] [2022-09-16 11:49:50,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:49:50,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:49:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:50,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:49:50,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:49:50,150 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-09-16 11:49:50,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 540 transitions, 1108 flow. Second operand has 12 states, 12 states have (on average 545.6666666666666) internal successors, (6548), 12 states have internal predecessors, (6548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:50,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:50,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-09-16 11:49:50,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:50,705 INFO L130 PetriNetUnfolder]: 101/2391 cut-off events. [2022-09-16 11:49:50,705 INFO L131 PetriNetUnfolder]: For 16/21 co-relation queries the response was YES. [2022-09-16 11:49:50,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 2391 events. 101/2391 cut-off events. For 16/21 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 17720 event pairs, 0 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 1932. Up to 11 conditions per place. [2022-09-16 11:49:50,744 INFO L137 encePairwiseOnDemand]: 576/583 looper letters, 43 selfloop transitions, 18 changer transitions 0/583 dead transitions. [2022-09-16 11:49:50,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 583 transitions, 1354 flow [2022-09-16 11:49:50,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:49:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:49:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 9838 transitions. [2022-09-16 11:49:50,757 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9374880884314847 [2022-09-16 11:49:50,757 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 9838 transitions. [2022-09-16 11:49:50,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 9838 transitions. [2022-09-16 11:49:50,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:50,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 9838 transitions. [2022-09-16 11:49:50,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 546.5555555555555) internal successors, (9838), 18 states have internal predecessors, (9838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:50,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 583.0) internal successors, (11077), 19 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:50,791 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 583.0) internal successors, (11077), 19 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:50,791 INFO L175 Difference]: Start difference. First operand has 530 places, 540 transitions, 1108 flow. Second operand 18 states and 9838 transitions. [2022-09-16 11:49:50,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 583 transitions, 1354 flow [2022-09-16 11:49:50,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 583 transitions, 1352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:49:50,799 INFO L231 Difference]: Finished difference. Result has 547 places, 552 transitions, 1212 flow [2022-09-16 11:49:50,800 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1212, PETRI_PLACES=547, PETRI_TRANSITIONS=552} [2022-09-16 11:49:50,801 INFO L287 CegarLoopForPetriNet]: 526 programPoint places, 21 predicate places. [2022-09-16 11:49:50,801 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 552 transitions, 1212 flow [2022-09-16 11:49:50,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 545.6666666666666) internal successors, (6548), 12 states have internal predecessors, (6548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:50,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:50,804 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] [2022-09-16 11:49:50,823 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 11:49:51,019 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 11:49:51,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:49:51,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:51,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1308172820, now seen corresponding path program 1 times [2022-09-16 11:49:51,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:51,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824201] [2022-09-16 11:49:51,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:51,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:51,097 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 11:49:51,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:51,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824201] [2022-09-16 11:49:51,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824201] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:49:51,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976137077] [2022-09-16 11:49:51,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:51,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:49:51,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:49:51,099 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 11:49:51,100 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 11:49:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:51,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:49:51,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:49:51,200 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 11:49:51,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:49:51,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976137077] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:51,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:49:51,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:49:51,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810650243] [2022-09-16 11:49:51,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:51,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:49:51,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:51,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:49:51,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:49:51,204 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-09-16 11:49:51,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 552 transitions, 1212 flow. Second operand has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:51,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:51,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-09-16 11:49:51,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:51,693 INFO L130 PetriNetUnfolder]: 101/2387 cut-off events. [2022-09-16 11:49:51,693 INFO L131 PetriNetUnfolder]: For 52/57 co-relation queries the response was YES. [2022-09-16 11:49:51,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 2387 events. 101/2387 cut-off events. For 52/57 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 17718 event pairs, 0 based on Foata normal form. 4/1946 useless extension candidates. Maximal degree in co-relation 2000. Up to 28 conditions per place. [2022-09-16 11:49:51,750 INFO L137 encePairwiseOnDemand]: 578/583 looper letters, 23 selfloop transitions, 11 changer transitions 0/556 dead transitions. [2022-09-16 11:49:51,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 556 transitions, 1275 flow [2022-09-16 11:49:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:49:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:49:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3827 transitions. [2022-09-16 11:49:51,756 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9377603528546925 [2022-09-16 11:49:51,756 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3827 transitions. [2022-09-16 11:49:51,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3827 transitions. [2022-09-16 11:49:51,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:51,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3827 transitions. [2022-09-16 11:49:51,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 546.7142857142857) internal successors, (3827), 7 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:51,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:51,767 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:51,820 INFO L175 Difference]: Start difference. First operand has 547 places, 552 transitions, 1212 flow. Second operand 7 states and 3827 transitions. [2022-09-16 11:49:51,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 556 transitions, 1275 flow [2022-09-16 11:49:51,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 556 transitions, 1243 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:49:51,837 INFO L231 Difference]: Finished difference. Result has 543 places, 548 transitions, 1175 flow [2022-09-16 11:49:51,838 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1175, PETRI_PLACES=543, PETRI_TRANSITIONS=548} [2022-09-16 11:49:51,838 INFO L287 CegarLoopForPetriNet]: 526 programPoint places, 17 predicate places. [2022-09-16 11:49:51,838 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 548 transitions, 1175 flow [2022-09-16 11:49:51,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:51,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:51,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:51,865 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 11:49:52,055 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 11:49:52,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:49:52,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash 955751352, now seen corresponding path program 1 times [2022-09-16 11:49:52,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:52,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182701530] [2022-09-16 11:49:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:52,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:49:52,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:52,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182701530] [2022-09-16 11:49:52,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182701530] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:52,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:52,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:49:52,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910400223] [2022-09-16 11:49:52,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:52,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:49:52,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:52,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:49:52,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:49:52,124 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 583 [2022-09-16 11:49:52,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 548 transitions, 1175 flow. Second operand has 6 states, 6 states have (on average 469.0) internal successors, (2814), 6 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:52,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:52,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 583 [2022-09-16 11:49:52,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:53,986 INFO L130 PetriNetUnfolder]: 1216/8132 cut-off events. [2022-09-16 11:49:53,986 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-09-16 11:49:54,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13156 conditions, 8132 events. 1216/8132 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 81037 event pairs, 140 based on Foata normal form. 0/6807 useless extension candidates. Maximal degree in co-relation 10521. Up to 966 conditions per place. [2022-09-16 11:49:54,118 INFO L137 encePairwiseOnDemand]: 559/583 looper letters, 195 selfloop transitions, 31 changer transitions 0/683 dead transitions. [2022-09-16 11:49:54,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 683 transitions, 1911 flow [2022-09-16 11:49:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:49:54,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:49:54,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4431 transitions. [2022-09-16 11:49:54,126 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8444825614636935 [2022-09-16 11:49:54,126 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4431 transitions. [2022-09-16 11:49:54,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4431 transitions. [2022-09-16 11:49:54,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:54,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4431 transitions. [2022-09-16 11:49:54,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 492.3333333333333) internal successors, (4431), 9 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:54,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:54,138 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:54,138 INFO L175 Difference]: Start difference. First operand has 543 places, 548 transitions, 1175 flow. Second operand 9 states and 4431 transitions. [2022-09-16 11:49:54,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 683 transitions, 1911 flow [2022-09-16 11:49:54,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 683 transitions, 1897 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:49:54,156 INFO L231 Difference]: Finished difference. Result has 553 places, 572 transitions, 1375 flow [2022-09-16 11:49:54,156 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=553, PETRI_TRANSITIONS=572} [2022-09-16 11:49:54,157 INFO L287 CegarLoopForPetriNet]: 526 programPoint places, 27 predicate places. [2022-09-16 11:49:54,157 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 572 transitions, 1375 flow [2022-09-16 11:49:54,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 469.0) internal successors, (2814), 6 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:54,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:54,158 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] [2022-09-16 11:49:54,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:49:54,158 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:49:54,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -436477753, now seen corresponding path program 1 times [2022-09-16 11:49:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:54,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927321117] [2022-09-16 11:49:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:54,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:49:54,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:54,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927321117] [2022-09-16 11:49:54,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927321117] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:54,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:54,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:49:54,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994378321] [2022-09-16 11:49:54,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:54,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:49:54,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:49:54,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:49:54,227 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 463 out of 583 [2022-09-16 11:49:54,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 572 transitions, 1375 flow. Second operand has 4 states, 4 states have (on average 464.75) internal successors, (1859), 4 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:54,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:54,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 463 of 583 [2022-09-16 11:49:54,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:56,529 INFO L130 PetriNetUnfolder]: 1701/11567 cut-off events. [2022-09-16 11:49:56,529 INFO L131 PetriNetUnfolder]: For 1339/1339 co-relation queries the response was YES. [2022-09-16 11:49:56,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19655 conditions, 11567 events. 1701/11567 cut-off events. For 1339/1339 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 125181 event pairs, 660 based on Foata normal form. 160/10107 useless extension candidates. Maximal degree in co-relation 15716. Up to 2166 conditions per place. [2022-09-16 11:49:56,853 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 126 selfloop transitions, 22 changer transitions 0/609 dead transitions. [2022-09-16 11:49:56,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 609 transitions, 1742 flow [2022-09-16 11:49:56,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:49:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:49:56,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1994 transitions. [2022-09-16 11:49:56,856 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8550600343053173 [2022-09-16 11:49:56,856 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1994 transitions. [2022-09-16 11:49:56,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1994 transitions. [2022-09-16 11:49:56,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:56,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1994 transitions. [2022-09-16 11:49:56,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 498.5) internal successors, (1994), 4 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:56,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:56,862 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:56,862 INFO L175 Difference]: Start difference. First operand has 553 places, 572 transitions, 1375 flow. Second operand 4 states and 1994 transitions. [2022-09-16 11:49:56,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 609 transitions, 1742 flow [2022-09-16 11:49:56,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 609 transitions, 1740 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:49:56,878 INFO L231 Difference]: Finished difference. Result has 554 places, 578 transitions, 1509 flow [2022-09-16 11:49:56,879 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1509, PETRI_PLACES=554, PETRI_TRANSITIONS=578} [2022-09-16 11:49:56,881 INFO L287 CegarLoopForPetriNet]: 526 programPoint places, 28 predicate places. [2022-09-16 11:49:56,881 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 578 transitions, 1509 flow [2022-09-16 11:49:56,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 464.75) internal successors, (1859), 4 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:56,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:56,882 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] [2022-09-16 11:49:56,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:49:56,882 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:49:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1577499575, now seen corresponding path program 1 times [2022-09-16 11:49:56,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:56,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090960201] [2022-09-16 11:49:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:56,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:49:56,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:56,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090960201] [2022-09-16 11:49:56,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090960201] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:56,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:56,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-16 11:49:56,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335155176] [2022-09-16 11:49:56,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:57,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:49:57,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:57,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:49:57,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:49:57,003 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 583 [2022-09-16 11:49:57,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 578 transitions, 1509 flow. Second operand has 9 states, 9 states have (on average 514.7777777777778) internal successors, (4633), 9 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:57,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:57,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 583 [2022-09-16 11:49:57,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:02,663 INFO L130 PetriNetUnfolder]: 2588/46589 cut-off events. [2022-09-16 11:50:02,664 INFO L131 PetriNetUnfolder]: For 1081/1101 co-relation queries the response was YES. [2022-09-16 11:50:02,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49880 conditions, 46589 events. 2588/46589 cut-off events. For 1081/1101 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 666493 event pairs, 443 based on Foata normal form. 0/37201 useless extension candidates. Maximal degree in co-relation 48628. Up to 987 conditions per place. [2022-09-16 11:50:03,015 INFO L137 encePairwiseOnDemand]: 571/583 looper letters, 51 selfloop transitions, 11 changer transitions 0/594 dead transitions. [2022-09-16 11:50:03,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 594 transitions, 1671 flow [2022-09-16 11:50:03,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:50:03,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:50:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5689 transitions. [2022-09-16 11:50:03,023 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8871043193513176 [2022-09-16 11:50:03,023 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5689 transitions. [2022-09-16 11:50:03,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5689 transitions. [2022-09-16 11:50:03,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:03,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5689 transitions. [2022-09-16 11:50:03,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 517.1818181818181) internal successors, (5689), 11 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:03,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 583.0) internal successors, (6996), 12 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:03,037 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 583.0) internal successors, (6996), 12 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:03,038 INFO L175 Difference]: Start difference. First operand has 554 places, 578 transitions, 1509 flow. Second operand 11 states and 5689 transitions. [2022-09-16 11:50:03,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 594 transitions, 1671 flow [2022-09-16 11:50:03,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 594 transitions, 1671 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:50:03,051 INFO L231 Difference]: Finished difference. Result has 570 places, 583 transitions, 1567 flow [2022-09-16 11:50:03,052 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1567, PETRI_PLACES=570, PETRI_TRANSITIONS=583} [2022-09-16 11:50:03,054 INFO L287 CegarLoopForPetriNet]: 526 programPoint places, 44 predicate places. [2022-09-16 11:50:03,055 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 583 transitions, 1567 flow [2022-09-16 11:50:03,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 514.7777777777778) internal successors, (4633), 9 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:03,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:03,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:03,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:50:03,058 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:50:03,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:03,058 INFO L85 PathProgramCache]: Analyzing trace with hash -994600474, now seen corresponding path program 1 times [2022-09-16 11:50:03,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:03,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296020569] [2022-09-16 11:50:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:03,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:03,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:03,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296020569] [2022-09-16 11:50:03,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296020569] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:03,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:03,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:50:03,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907587714] [2022-09-16 11:50:03,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:03,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:50:03,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:03,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:50:03,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:50:03,110 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 583 [2022-09-16 11:50:03,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 583 transitions, 1567 flow. Second operand has 6 states, 6 states have (on average 469.1666666666667) internal successors, (2815), 6 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:03,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:03,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 583 [2022-09-16 11:50:03,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:09,438 INFO L130 PetriNetUnfolder]: 4883/23819 cut-off events. [2022-09-16 11:50:09,438 INFO L131 PetriNetUnfolder]: For 4764/4786 co-relation queries the response was YES. [2022-09-16 11:50:09,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34762 conditions, 23819 events. 4883/23819 cut-off events. For 4764/4786 co-relation queries the response was YES. Maximal size of possible extension queue 2497. Compared 353623 event pairs, 616 based on Foata normal form. 0/17065 useless extension candidates. Maximal degree in co-relation 31352. Up to 4180 conditions per place. [2022-09-16 11:50:09,950 INFO L137 encePairwiseOnDemand]: 559/583 looper letters, 194 selfloop transitions, 31 changer transitions 0/716 dead transitions. [2022-09-16 11:50:09,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 716 transitions, 2289 flow [2022-09-16 11:50:09,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:50:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:50:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4429 transitions. [2022-09-16 11:50:09,958 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8441013912712025 [2022-09-16 11:50:09,958 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4429 transitions. [2022-09-16 11:50:09,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4429 transitions. [2022-09-16 11:50:09,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:09,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4429 transitions. [2022-09-16 11:50:09,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 492.1111111111111) internal successors, (4429), 9 states have internal predecessors, (4429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:09,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:09,972 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:09,972 INFO L175 Difference]: Start difference. First operand has 570 places, 583 transitions, 1567 flow. Second operand 9 states and 4429 transitions. [2022-09-16 11:50:09,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 716 transitions, 2289 flow [2022-09-16 11:50:09,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 716 transitions, 2282 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:09,985 INFO L231 Difference]: Finished difference. Result has 582 places, 607 transitions, 1774 flow [2022-09-16 11:50:09,986 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1774, PETRI_PLACES=582, PETRI_TRANSITIONS=607} [2022-09-16 11:50:09,986 INFO L287 CegarLoopForPetriNet]: 526 programPoint places, 56 predicate places. [2022-09-16 11:50:09,986 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 607 transitions, 1774 flow [2022-09-16 11:50:09,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 469.1666666666667) internal successors, (2815), 6 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:09,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:09,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:09,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:50:09,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:50:09,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:09,988 INFO L85 PathProgramCache]: Analyzing trace with hash -767841993, now seen corresponding path program 1 times [2022-09-16 11:50:09,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:09,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33946070] [2022-09-16 11:50:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:09,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:10,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:10,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33946070] [2022-09-16 11:50:10,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33946070] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:10,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:10,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184314532] [2022-09-16 11:50:10,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:10,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:10,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:10,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:10,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:10,017 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 463 out of 583 [2022-09-16 11:50:10,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 607 transitions, 1774 flow. Second operand has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:10,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:10,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 463 of 583 [2022-09-16 11:50:10,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:19,416 INFO L130 PetriNetUnfolder]: 6847/33721 cut-off events. [2022-09-16 11:50:19,416 INFO L131 PetriNetUnfolder]: For 9941/9963 co-relation queries the response was YES. [2022-09-16 11:50:20,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51474 conditions, 33721 events. 6847/33721 cut-off events. For 9941/9963 co-relation queries the response was YES. Maximal size of possible extension queue 3521. Compared 525440 event pairs, 572 based on Foata normal form. 432/25152 useless extension candidates. Maximal degree in co-relation 46272. Up to 6933 conditions per place. [2022-09-16 11:50:20,182 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 125 selfloop transitions, 22 changer transitions 0/643 dead transitions. [2022-09-16 11:50:20,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 643 transitions, 2134 flow [2022-09-16 11:50:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1993 transitions. [2022-09-16 11:50:20,186 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8546312178387651 [2022-09-16 11:50:20,186 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1993 transitions. [2022-09-16 11:50:20,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1993 transitions. [2022-09-16 11:50:20,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:20,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1993 transitions. [2022-09-16 11:50:20,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 498.25) internal successors, (1993), 4 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:20,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:20,192 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:20,193 INFO L175 Difference]: Start difference. First operand has 582 places, 607 transitions, 1774 flow. Second operand 4 states and 1993 transitions. [2022-09-16 11:50:20,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 643 transitions, 2134 flow [2022-09-16 11:50:20,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 643 transitions, 2132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:50:20,222 INFO L231 Difference]: Finished difference. Result has 583 places, 613 transitions, 1908 flow [2022-09-16 11:50:20,222 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1908, PETRI_PLACES=583, PETRI_TRANSITIONS=613} [2022-09-16 11:50:20,224 INFO L287 CegarLoopForPetriNet]: 526 programPoint places, 57 predicate places. [2022-09-16 11:50:20,224 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 613 transitions, 1908 flow [2022-09-16 11:50:20,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:20,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:20,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:20,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:50:20,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:50:20,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1908863815, now seen corresponding path program 1 times [2022-09-16 11:50:20,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:20,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691038683] [2022-09-16 11:50:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:20,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:20,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:20,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691038683] [2022-09-16 11:50:20,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691038683] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:20,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:20,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-16 11:50:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506816455] [2022-09-16 11:50:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:20,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:50:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:50:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:50:20,322 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 583 [2022-09-16 11:50:20,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 613 transitions, 1908 flow. Second operand has 9 states, 9 states have (on average 514.8888888888889) internal successors, (4634), 9 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:20,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:20,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 583 [2022-09-16 11:50:20,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:34,825 INFO L130 PetriNetUnfolder]: 5277/74698 cut-off events. [2022-09-16 11:50:34,825 INFO L131 PetriNetUnfolder]: For 13748/13748 co-relation queries the response was YES. [2022-09-16 11:50:36,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101686 conditions, 74698 events. 5277/74698 cut-off events. For 13748/13748 co-relation queries the response was YES. Maximal size of possible extension queue 1861. Compared 1237755 event pairs, 2296 based on Foata normal form. 0/62349 useless extension candidates. Maximal degree in co-relation 100864. Up to 4839 conditions per place. [2022-09-16 11:50:36,361 INFO L137 encePairwiseOnDemand]: 571/583 looper letters, 50 selfloop transitions, 11 changer transitions 0/623 dead transitions. [2022-09-16 11:50:36,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 623 transitions, 2060 flow [2022-09-16 11:50:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:50:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:50:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5688 transitions. [2022-09-16 11:50:36,369 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8869483860907531 [2022-09-16 11:50:36,369 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5688 transitions. [2022-09-16 11:50:36,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5688 transitions. [2022-09-16 11:50:36,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:36,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5688 transitions. [2022-09-16 11:50:36,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 517.0909090909091) internal successors, (5688), 11 states have internal predecessors, (5688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:36,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 583.0) internal successors, (6996), 12 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:36,380 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 583.0) internal successors, (6996), 12 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:36,380 INFO L175 Difference]: Start difference. First operand has 583 places, 613 transitions, 1908 flow. Second operand 11 states and 5688 transitions. [2022-09-16 11:50:36,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 623 transitions, 2060 flow [2022-09-16 11:50:36,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 623 transitions, 2060 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:50:36,509 INFO L231 Difference]: Finished difference. Result has 595 places, 614 transitions, 1941 flow [2022-09-16 11:50:36,510 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1941, PETRI_PLACES=595, PETRI_TRANSITIONS=614} [2022-09-16 11:50:36,510 INFO L287 CegarLoopForPetriNet]: 526 programPoint places, 69 predicate places. [2022-09-16 11:50:36,511 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 614 transitions, 1941 flow [2022-09-16 11:50:36,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 514.8888888888889) internal successors, (4634), 9 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:36,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:36,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:36,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:50:36,512 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:50:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:36,512 INFO L85 PathProgramCache]: Analyzing trace with hash 653516789, now seen corresponding path program 1 times [2022-09-16 11:50:36,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:36,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713862203] [2022-09-16 11:50:36,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:36,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:36,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:36,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713862203] [2022-09-16 11:50:36,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713862203] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:36,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:36,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:36,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216827579] [2022-09-16 11:50:36,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:36,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:36,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:36,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:36,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:36,538 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 463 out of 583 [2022-09-16 11:50:36,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 614 transitions, 1941 flow. Second operand has 4 states, 4 states have (on average 465.25) internal successors, (1861), 4 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:36,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:36,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 463 of 583 [2022-09-16 11:50:36,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:42,484 INFO L130 PetriNetUnfolder]: 1417/12217 cut-off events. [2022-09-16 11:50:42,485 INFO L131 PetriNetUnfolder]: For 2859/2859 co-relation queries the response was YES. [2022-09-16 11:50:43,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20786 conditions, 12217 events. 1417/12217 cut-off events. For 2859/2859 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 135417 event pairs, 396 based on Foata normal form. 66/10738 useless extension candidates. Maximal degree in co-relation 20132. Up to 1651 conditions per place. [2022-09-16 11:50:43,213 INFO L137 encePairwiseOnDemand]: 563/583 looper letters, 124 selfloop transitions, 22 changer transitions 0/643 dead transitions. [2022-09-16 11:50:43,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 643 transitions, 2288 flow [2022-09-16 11:50:43,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1986 transitions. [2022-09-16 11:50:43,232 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8516295025728988 [2022-09-16 11:50:43,232 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1986 transitions. [2022-09-16 11:50:43,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1986 transitions. [2022-09-16 11:50:43,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:43,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1986 transitions. [2022-09-16 11:50:43,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 496.5) internal successors, (1986), 4 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:43,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:43,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:43,274 INFO L175 Difference]: Start difference. First operand has 595 places, 614 transitions, 1941 flow. Second operand 4 states and 1986 transitions. [2022-09-16 11:50:43,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 643 transitions, 2288 flow [2022-09-16 11:50:43,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 643 transitions, 2258 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-16 11:50:43,311 INFO L231 Difference]: Finished difference. Result has 591 places, 612 transitions, 1961 flow [2022-09-16 11:50:43,312 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1887, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1961, PETRI_PLACES=591, PETRI_TRANSITIONS=612} [2022-09-16 11:50:43,313 INFO L287 CegarLoopForPetriNet]: 526 programPoint places, 65 predicate places. [2022-09-16 11:50:43,313 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 612 transitions, 1961 flow [2022-09-16 11:50:43,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 465.25) internal successors, (1861), 4 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:43,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:43,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:43,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:50:43,314 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:50:43,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:43,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1215814580, now seen corresponding path program 1 times [2022-09-16 11:50:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:43,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949165075] [2022-09-16 11:50:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:43,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:43,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:43,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949165075] [2022-09-16 11:50:43,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949165075] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:43,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:43,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:50:43,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173872155] [2022-09-16 11:50:43,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:43,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:50:43,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:50:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:50:43,376 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 583 [2022-09-16 11:50:43,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 612 transitions, 1961 flow. Second operand has 6 states, 6 states have (on average 469.3333333333333) internal successors, (2816), 6 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:43,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:43,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 583 [2022-09-16 11:50:43,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:52,388 INFO L130 PetriNetUnfolder]: 1981/30094 cut-off events. [2022-09-16 11:50:52,388 INFO L131 PetriNetUnfolder]: For 6172/6172 co-relation queries the response was YES. [2022-09-16 11:50:53,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43567 conditions, 30094 events. 1981/30094 cut-off events. For 6172/6172 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 395606 event pairs, 241 based on Foata normal form. 0/26032 useless extension candidates. Maximal degree in co-relation 42840. Up to 1645 conditions per place. [2022-09-16 11:50:53,330 INFO L137 encePairwiseOnDemand]: 561/583 looper letters, 160 selfloop transitions, 29 changer transitions 0/685 dead transitions. [2022-09-16 11:50:53,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 685 transitions, 2586 flow [2022-09-16 11:50:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:50:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:50:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4377 transitions. [2022-09-16 11:50:53,337 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.834190966266438 [2022-09-16 11:50:53,337 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4377 transitions. [2022-09-16 11:50:53,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4377 transitions. [2022-09-16 11:50:53,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:53,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4377 transitions. [2022-09-16 11:50:53,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 486.3333333333333) internal successors, (4377), 9 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:53,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:53,347 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:53,347 INFO L175 Difference]: Start difference. First operand has 591 places, 612 transitions, 1961 flow. Second operand 9 states and 4377 transitions. [2022-09-16 11:50:53,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 685 transitions, 2586 flow [2022-09-16 11:50:53,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 685 transitions, 2536 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:53,389 INFO L231 Difference]: Finished difference. Result has 600 places, 620 transitions, 2073 flow [2022-09-16 11:50:53,390 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2073, PETRI_PLACES=600, PETRI_TRANSITIONS=620} [2022-09-16 11:50:53,390 INFO L287 CegarLoopForPetriNet]: 526 programPoint places, 74 predicate places. [2022-09-16 11:50:53,390 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 620 transitions, 2073 flow [2022-09-16 11:50:53,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 469.3333333333333) internal successors, (2816), 6 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:53,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:53,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:53,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:50:53,391 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:50:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:53,391 INFO L85 PathProgramCache]: Analyzing trace with hash 847062338, now seen corresponding path program 1 times [2022-09-16 11:50:53,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:53,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757080088] [2022-09-16 11:50:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:53,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:53,999 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 11:50:53,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:53,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757080088] [2022-09-16 11:50:53,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757080088] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:53,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307385991] [2022-09-16 11:50:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:54,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:54,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:54,001 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 11:50:54,002 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 11:50:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:54,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 32 conjunts are in the unsatisfiable core [2022-09-16 11:50:54,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:54,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 11:50:54,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:50:54,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:50:54,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 11:50:54,601 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 11:50:54,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:54,687 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 9223372039002259456))) is different from false [2022-09-16 11:50:54,704 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 9223372039002259456))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) is different from false [2022-09-16 11:50:54,712 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 9223372039002259456))) (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) is different from false [2022-09-16 11:50:54,727 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:50:54,736 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) |c_ULTIMATE.start_main_#t~ret26#1.base|) |c_ULTIMATE.start_main_#t~ret26#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:50:54,742 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) is different from false [2022-09-16 11:50:54,745 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:50:54,769 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:50:54,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-09-16 11:50:54,776 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:50:54,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-09-16 11:50:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:50:54,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307385991] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:54,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:54,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 17] total 51 [2022-09-16 11:50:54,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449704471] [2022-09-16 11:50:54,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:54,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-09-16 11:50:54,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:54,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-09-16 11:50:54,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1845, Unknown=7, NotChecked=644, Total=2652 [2022-09-16 11:50:54,971 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 583 [2022-09-16 11:50:54,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 620 transitions, 2073 flow. Second operand has 52 states, 52 states have (on average 402.6923076923077) internal successors, (20940), 52 states have internal predecessors, (20940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:54,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:54,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 583 [2022-09-16 11:50:54,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand