/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:47:31,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:47:31,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:47:31,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:47:31,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:47:31,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:47:31,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:47:31,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:47:31,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:47:31,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:47:31,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:47:31,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:47:31,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:47:31,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:47:31,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:47:31,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:47:31,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:47:31,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:47:31,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:47:31,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:47:31,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:47:31,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:47:31,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:47:31,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:47:31,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:47:31,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:47:31,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:47:31,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:47:31,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:47:31,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:47:31,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:47:31,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:47:31,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:47:31,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:47:31,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:47:31,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:47:31,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:47:31,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:47:31,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:47:31,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:47:31,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:47:31,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:47:31,876 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:47:31,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:47:31,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:47:31,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:47:31,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:47:31,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:47:31,878 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:47:31,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:47:31,878 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:47:31,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:47:31,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:47:31,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:47:31,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:47:31,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:47:31,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:47:31,879 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:47:31,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:47:31,879 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:47:31,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:47:31,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:47:31,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:47:31,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:47:31,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:47:31,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:47:31,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:47:31,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:47:31,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:47:31,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:47:31,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:47:31,882 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:47:31,882 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:47:31,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:47:32,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:47:32,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:47:32,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:47:32,088 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:47:32,089 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:47:32,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2022-09-16 11:47:32,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1648080d/e207612f154449a58d28fc7067a0f0f5/FLAG5e81054f5 [2022-09-16 11:47:32,448 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:47:32,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2022-09-16 11:47:32,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1648080d/e207612f154449a58d28fc7067a0f0f5/FLAG5e81054f5 [2022-09-16 11:47:32,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1648080d/e207612f154449a58d28fc7067a0f0f5 [2022-09-16 11:47:32,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:47:32,906 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:47:32,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:47:32,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:47:32,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:47:32,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:47:32" (1/1) ... [2022-09-16 11:47:32,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621051da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:32, skipping insertion in model container [2022-09-16 11:47:32,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:47:32" (1/1) ... [2022-09-16 11:47:32,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:47:32,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:47:33,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2022-09-16 11:47:33,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:47:33,113 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:47:33,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2022-09-16 11:47:33,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:47:33,144 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:47:33,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:33 WrapperNode [2022-09-16 11:47:33,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:47:33,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:47:33,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:47:33,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:47:33,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:33" (1/1) ... [2022-09-16 11:47:33,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:33" (1/1) ... [2022-09-16 11:47:33,173 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 182 [2022-09-16 11:47:33,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:47:33,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:47:33,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:47:33,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:47:33,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:33" (1/1) ... [2022-09-16 11:47:33,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:33" (1/1) ... [2022-09-16 11:47:33,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:33" (1/1) ... [2022-09-16 11:47:33,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:33" (1/1) ... [2022-09-16 11:47:33,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:33" (1/1) ... [2022-09-16 11:47:33,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:33" (1/1) ... [2022-09-16 11:47:33,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:33" (1/1) ... [2022-09-16 11:47:33,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:47:33,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:47:33,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:47:33,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:47:33,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:33" (1/1) ... [2022-09-16 11:47:33,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:47:33,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:47:33,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:47:33,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:47:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:47:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:47:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:47:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:47:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:47:33,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:47:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:47:33,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:47:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:47:33,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:47:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:47:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:47:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:47:33,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:47:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:47:33,258 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:47:33,337 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:47:33,338 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:47:33,726 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:47:33,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:47:33,735 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-16 11:47:33,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:47:33 BoogieIcfgContainer [2022-09-16 11:47:33,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:47:33,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:47:33,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:47:33,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:47:33,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:47:32" (1/3) ... [2022-09-16 11:47:33,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db445c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:47:33, skipping insertion in model container [2022-09-16 11:47:33,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:33" (2/3) ... [2022-09-16 11:47:33,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db445c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:47:33, skipping insertion in model container [2022-09-16 11:47:33,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:47:33" (3/3) ... [2022-09-16 11:47:33,755 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-09-16 11:47:33,766 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:47:33,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-09-16 11:47:33,766 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:47:33,850 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:47:33,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 375 transitions, 774 flow [2022-09-16 11:47:34,007 INFO L130 PetriNetUnfolder]: 35/372 cut-off events. [2022-09-16 11:47:34,007 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:47:34,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 372 events. 35/372 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 704 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 289. Up to 3 conditions per place. [2022-09-16 11:47:34,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 375 transitions, 774 flow [2022-09-16 11:47:34,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 320 places, 343 transitions, 701 flow [2022-09-16 11:47:34,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:47:34,035 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;@30efd4b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:47:34,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-09-16 11:47:34,049 INFO L130 PetriNetUnfolder]: 3/83 cut-off events. [2022-09-16 11:47:34,049 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:47:34,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:34,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:34,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-09-16 11:47:34,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1689820262, now seen corresponding path program 1 times [2022-09-16 11:47:34,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:34,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550509831] [2022-09-16 11:47:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:34,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:47:34,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:34,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550509831] [2022-09-16 11:47:34,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550509831] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:34,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:34,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:34,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686596093] [2022-09-16 11:47:34,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:34,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:34,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:34,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:34,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:34,298 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 375 [2022-09-16 11:47:34,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 343 transitions, 701 flow. Second operand has 4 states, 4 states have (on average 319.5) internal successors, (1278), 4 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:34,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:34,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 375 [2022-09-16 11:47:34,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:34,495 INFO L130 PetriNetUnfolder]: 41/550 cut-off events. [2022-09-16 11:47:34,495 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-09-16 11:47:34,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 550 events. 41/550 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1972 event pairs, 0 based on Foata normal form. 24/496 useless extension candidates. Maximal degree in co-relation 510. Up to 44 conditions per place. [2022-09-16 11:47:34,502 INFO L137 encePairwiseOnDemand]: 343/375 looper letters, 58 selfloop transitions, 14 changer transitions 6/362 dead transitions. [2022-09-16 11:47:34,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 362 transitions, 898 flow [2022-09-16 11:47:34,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:47:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:47:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1686 transitions. [2022-09-16 11:47:34,519 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8992 [2022-09-16 11:47:34,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1686 transitions. [2022-09-16 11:47:34,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1686 transitions. [2022-09-16 11:47:34,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:34,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1686 transitions. [2022-09-16 11:47:34,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 337.2) internal successors, (1686), 5 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:34,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:34,539 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:34,540 INFO L175 Difference]: Start difference. First operand has 320 places, 343 transitions, 701 flow. Second operand 5 states and 1686 transitions. [2022-09-16 11:47:34,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 362 transitions, 898 flow [2022-09-16 11:47:34,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 362 transitions, 880 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:34,552 INFO L231 Difference]: Finished difference. Result has 322 places, 336 transitions, 760 flow [2022-09-16 11:47:34,554 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=760, PETRI_PLACES=322, PETRI_TRANSITIONS=336} [2022-09-16 11:47:34,557 INFO L287 CegarLoopForPetriNet]: 320 programPoint places, 2 predicate places. [2022-09-16 11:47:34,557 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 336 transitions, 760 flow [2022-09-16 11:47:34,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 319.5) internal successors, (1278), 4 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:34,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:34,559 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] [2022-09-16 11:47:34,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:47:34,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-09-16 11:47:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:34,560 INFO L85 PathProgramCache]: Analyzing trace with hash 94551987, now seen corresponding path program 1 times [2022-09-16 11:47:34,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:34,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246735272] [2022-09-16 11:47:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:34,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:34,653 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 11:47:34,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:34,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246735272] [2022-09-16 11:47:34,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246735272] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:47:34,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124291789] [2022-09-16 11:47:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:34,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:47:34,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:47:34,657 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 11:47:34,705 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 11:47:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:34,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:47:34,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:47:34,848 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 11:47:34,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:47:34,896 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 11:47:34,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124291789] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:47:34,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:47:34,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:47:34,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264969531] [2022-09-16 11:47:34,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:47:34,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:47:34,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:34,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:47:34,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:47:34,910 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 375 [2022-09-16 11:47:34,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 336 transitions, 760 flow. Second operand has 12 states, 12 states have (on average 320.6666666666667) internal successors, (3848), 12 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:34,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:34,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 375 [2022-09-16 11:47:34,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:35,301 INFO L130 PetriNetUnfolder]: 101/1207 cut-off events. [2022-09-16 11:47:35,301 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-09-16 11:47:35,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1485 conditions, 1207 events. 101/1207 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6367 event pairs, 0 based on Foata normal form. 9/1051 useless extension candidates. Maximal degree in co-relation 816. Up to 35 conditions per place. [2022-09-16 11:47:35,315 INFO L137 encePairwiseOnDemand]: 352/375 looper letters, 109 selfloop transitions, 62 changer transitions 0/455 dead transitions. [2022-09-16 11:47:35,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 455 transitions, 1442 flow [2022-09-16 11:47:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:47:35,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:47:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5904 transitions. [2022-09-16 11:47:35,323 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8746666666666667 [2022-09-16 11:47:35,324 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5904 transitions. [2022-09-16 11:47:35,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5904 transitions. [2022-09-16 11:47:35,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:35,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5904 transitions. [2022-09-16 11:47:35,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:35,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 375.0) internal successors, (7125), 19 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:35,345 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 375.0) internal successors, (7125), 19 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:35,345 INFO L175 Difference]: Start difference. First operand has 322 places, 336 transitions, 760 flow. Second operand 18 states and 5904 transitions. [2022-09-16 11:47:35,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 455 transitions, 1442 flow [2022-09-16 11:47:35,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 455 transitions, 1434 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:35,356 INFO L231 Difference]: Finished difference. Result has 336 places, 378 transitions, 1122 flow [2022-09-16 11:47:35,356 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1122, PETRI_PLACES=336, PETRI_TRANSITIONS=378} [2022-09-16 11:47:35,357 INFO L287 CegarLoopForPetriNet]: 320 programPoint places, 16 predicate places. [2022-09-16 11:47:35,357 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 378 transitions, 1122 flow [2022-09-16 11:47:35,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 320.6666666666667) internal successors, (3848), 12 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:35,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:35,359 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] [2022-09-16 11:47:35,380 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 11:47:35,575 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 11:47:35,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-09-16 11:47:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1363854976, now seen corresponding path program 1 times [2022-09-16 11:47:35,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:35,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064600756] [2022-09-16 11:47:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:35,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:35,643 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 11:47:35,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:35,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064600756] [2022-09-16 11:47:35,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064600756] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:47:35,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963490176] [2022-09-16 11:47:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:35,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:47:35,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:47:35,646 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 11:47:35,648 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 11:47:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:35,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:47:35,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:47:35,760 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 11:47:35,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:47:35,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963490176] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:35,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:47:35,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:47:35,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432872606] [2022-09-16 11:47:35,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:35,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:35,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:35,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:35,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:35,763 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 375 [2022-09-16 11:47:35,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 378 transitions, 1122 flow. Second operand has 6 states, 6 states have (on average 320.3333333333333) internal successors, (1922), 6 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:35,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:35,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 375 [2022-09-16 11:47:35,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:36,004 INFO L130 PetriNetUnfolder]: 101/1195 cut-off events. [2022-09-16 11:47:36,004 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-09-16 11:47:36,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 1195 events. 101/1195 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6339 event pairs, 0 based on Foata normal form. 12/1042 useless extension candidates. Maximal degree in co-relation 1190. Up to 68 conditions per place. [2022-09-16 11:47:36,018 INFO L137 encePairwiseOnDemand]: 358/375 looper letters, 59 selfloop transitions, 43 changer transitions 0/386 dead transitions. [2022-09-16 11:47:36,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 386 transitions, 1297 flow [2022-09-16 11:47:36,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2298 transitions. [2022-09-16 11:47:36,021 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8754285714285714 [2022-09-16 11:47:36,021 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2298 transitions. [2022-09-16 11:47:36,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2298 transitions. [2022-09-16 11:47:36,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:36,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2298 transitions. [2022-09-16 11:47:36,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 328.2857142857143) internal successors, (2298), 7 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:36,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 375.0) internal successors, (3000), 8 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:36,029 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 375.0) internal successors, (3000), 8 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:36,029 INFO L175 Difference]: Start difference. First operand has 336 places, 378 transitions, 1122 flow. Second operand 7 states and 2298 transitions. [2022-09-16 11:47:36,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 386 transitions, 1297 flow [2022-09-16 11:47:36,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 386 transitions, 1181 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:36,039 INFO L231 Difference]: Finished difference. Result has 330 places, 366 transitions, 1011 flow [2022-09-16 11:47:36,039 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1011, PETRI_PLACES=330, PETRI_TRANSITIONS=366} [2022-09-16 11:47:36,041 INFO L287 CegarLoopForPetriNet]: 320 programPoint places, 10 predicate places. [2022-09-16 11:47:36,041 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 366 transitions, 1011 flow [2022-09-16 11:47:36,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 320.3333333333333) internal successors, (1922), 6 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:36,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:36,042 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:36,069 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 11:47:36,261 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 11:47:36,262 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-09-16 11:47:36,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:36,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1840971354, now seen corresponding path program 2 times [2022-09-16 11:47:36,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:36,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970210939] [2022-09-16 11:47:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:36,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:47:36,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:36,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970210939] [2022-09-16 11:47:36,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970210939] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:47:36,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012364508] [2022-09-16 11:47:36,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:47:36,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:47:36,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:47:36,376 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 11:47:36,378 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 11:47:36,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:47:36,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:47:36,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:47:36,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:47:36,581 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:47:36,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:47:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:47:36,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012364508] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:47:36,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:47:36,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:47:36,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948082958] [2022-09-16 11:47:36,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:47:36,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:47:36,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:36,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:47:36,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:47:36,694 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 375 [2022-09-16 11:47:36,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 366 transitions, 1011 flow. Second operand has 18 states, 18 states have (on average 287.6111111111111) internal successors, (5177), 18 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:36,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:36,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 375 [2022-09-16 11:47:36,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:38,438 INFO L130 PetriNetUnfolder]: 1870/7078 cut-off events. [2022-09-16 11:47:38,438 INFO L131 PetriNetUnfolder]: For 336/336 co-relation queries the response was YES. [2022-09-16 11:47:38,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10800 conditions, 7078 events. 1870/7078 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 65162 event pairs, 1008 based on Foata normal form. 6/5452 useless extension candidates. Maximal degree in co-relation 8694. Up to 406 conditions per place. [2022-09-16 11:47:38,515 INFO L137 encePairwiseOnDemand]: 347/375 looper letters, 248 selfloop transitions, 97 changer transitions 0/595 dead transitions. [2022-09-16 11:47:38,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 595 transitions, 2296 flow [2022-09-16 11:47:38,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:47:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-09-16 11:47:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 14267 transitions. [2022-09-16 11:47:38,536 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7764353741496599 [2022-09-16 11:47:38,536 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 14267 transitions. [2022-09-16 11:47:38,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 14267 transitions. [2022-09-16 11:47:38,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:38,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 14267 transitions. [2022-09-16 11:47:38,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 291.16326530612247) internal successors, (14267), 49 states have internal predecessors, (14267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:38,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 375.0) internal successors, (18750), 50 states have internal predecessors, (18750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:38,586 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 375.0) internal successors, (18750), 50 states have internal predecessors, (18750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:38,586 INFO L175 Difference]: Start difference. First operand has 330 places, 366 transitions, 1011 flow. Second operand 49 states and 14267 transitions. [2022-09-16 11:47:38,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 595 transitions, 2296 flow [2022-09-16 11:47:38,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 595 transitions, 2227 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:38,595 INFO L231 Difference]: Finished difference. Result has 376 places, 406 transitions, 1354 flow [2022-09-16 11:47:38,596 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1354, PETRI_PLACES=376, PETRI_TRANSITIONS=406} [2022-09-16 11:47:38,596 INFO L287 CegarLoopForPetriNet]: 320 programPoint places, 56 predicate places. [2022-09-16 11:47:38,596 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 406 transitions, 1354 flow [2022-09-16 11:47:38,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 287.6111111111111) internal successors, (5177), 18 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:38,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:38,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:38,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:47:38,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:47:38,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-09-16 11:47:38,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:38,812 INFO L85 PathProgramCache]: Analyzing trace with hash 567838905, now seen corresponding path program 1 times [2022-09-16 11:47:38,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:38,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451368294] [2022-09-16 11:47:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:38,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:47:38,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:38,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451368294] [2022-09-16 11:47:38,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451368294] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:38,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:38,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:47:38,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981735122] [2022-09-16 11:47:38,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:38,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:47:38,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:38,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:47:38,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:47:38,992 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 375 [2022-09-16 11:47:38,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 406 transitions, 1354 flow. Second operand has 11 states, 11 states have (on average 263.45454545454544) internal successors, (2898), 11 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:38,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:38,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 375 [2022-09-16 11:47:38,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:45,527 INFO L130 PetriNetUnfolder]: 19307/50869 cut-off events. [2022-09-16 11:47:45,528 INFO L131 PetriNetUnfolder]: For 2549/2549 co-relation queries the response was YES. [2022-09-16 11:47:45,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79044 conditions, 50869 events. 19307/50869 cut-off events. For 2549/2549 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 594755 event pairs, 11564 based on Foata normal form. 0/35882 useless extension candidates. Maximal degree in co-relation 67723. Up to 12281 conditions per place. [2022-09-16 11:47:45,985 INFO L137 encePairwiseOnDemand]: 357/375 looper letters, 234 selfloop transitions, 35 changer transitions 0/526 dead transitions. [2022-09-16 11:47:45,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 526 transitions, 2375 flow [2022-09-16 11:47:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:47:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:47:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4570 transitions. [2022-09-16 11:47:45,993 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7168627450980393 [2022-09-16 11:47:45,993 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4570 transitions. [2022-09-16 11:47:45,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4570 transitions. [2022-09-16 11:47:45,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:45,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4570 transitions. [2022-09-16 11:47:46,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 268.8235294117647) internal successors, (4570), 17 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:46,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 375.0) internal successors, (6750), 18 states have internal predecessors, (6750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:46,007 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 375.0) internal successors, (6750), 18 states have internal predecessors, (6750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:46,007 INFO L175 Difference]: Start difference. First operand has 376 places, 406 transitions, 1354 flow. Second operand 17 states and 4570 transitions. [2022-09-16 11:47:46,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 526 transitions, 2375 flow [2022-09-16 11:47:46,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 526 transitions, 2194 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-09-16 11:47:46,017 INFO L231 Difference]: Finished difference. Result has 386 places, 420 transitions, 1433 flow [2022-09-16 11:47:46,018 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1433, PETRI_PLACES=386, PETRI_TRANSITIONS=420} [2022-09-16 11:47:46,020 INFO L287 CegarLoopForPetriNet]: 320 programPoint places, 66 predicate places. [2022-09-16 11:47:46,020 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 420 transitions, 1433 flow [2022-09-16 11:47:46,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 263.45454545454544) internal successors, (2898), 11 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:46,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:46,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:46,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:47:46,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-09-16 11:47:46,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:46,021 INFO L85 PathProgramCache]: Analyzing trace with hash 423137814, now seen corresponding path program 1 times [2022-09-16 11:47:46,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:46,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472814244] [2022-09-16 11:47:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:46,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:47:46,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:46,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472814244] [2022-09-16 11:47:46,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472814244] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:46,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:46,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88103718] [2022-09-16 11:47:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:46,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:46,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:46,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:46,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:46,137 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 375 [2022-09-16 11:47:46,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 420 transitions, 1433 flow. Second operand has 8 states, 8 states have (on average 294.375) internal successors, (2355), 8 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:46,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:46,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 375 [2022-09-16 11:47:46,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:58,017 INFO L130 PetriNetUnfolder]: 32369/86183 cut-off events. [2022-09-16 11:47:58,017 INFO L131 PetriNetUnfolder]: For 6188/6188 co-relation queries the response was YES. [2022-09-16 11:47:59,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134460 conditions, 86183 events. 32369/86183 cut-off events. For 6188/6188 co-relation queries the response was YES. Maximal size of possible extension queue 1482. Compared 1092865 event pairs, 19411 based on Foata normal form. 952/63818 useless extension candidates. Maximal degree in co-relation 115185. Up to 24402 conditions per place. [2022-09-16 11:47:59,488 INFO L137 encePairwiseOnDemand]: 360/375 looper letters, 165 selfloop transitions, 37 changer transitions 0/476 dead transitions. [2022-09-16 11:47:59,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 476 transitions, 2033 flow [2022-09-16 11:47:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:47:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:47:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3591 transitions. [2022-09-16 11:47:59,494 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.798 [2022-09-16 11:47:59,494 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3591 transitions. [2022-09-16 11:47:59,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3591 transitions. [2022-09-16 11:47:59,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:59,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3591 transitions. [2022-09-16 11:47:59,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 299.25) internal successors, (3591), 12 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:59,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 375.0) internal successors, (4875), 13 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:59,507 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 375.0) internal successors, (4875), 13 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:59,507 INFO L175 Difference]: Start difference. First operand has 386 places, 420 transitions, 1433 flow. Second operand 12 states and 3591 transitions. [2022-09-16 11:47:59,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 476 transitions, 2033 flow [2022-09-16 11:47:59,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 476 transitions, 2011 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:59,524 INFO L231 Difference]: Finished difference. Result has 395 places, 424 transitions, 1539 flow [2022-09-16 11:47:59,525 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1539, PETRI_PLACES=395, PETRI_TRANSITIONS=424} [2022-09-16 11:47:59,527 INFO L287 CegarLoopForPetriNet]: 320 programPoint places, 75 predicate places. [2022-09-16 11:47:59,528 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 424 transitions, 1539 flow [2022-09-16 11:47:59,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 294.375) internal successors, (2355), 8 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:59,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:59,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:59,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:47:59,529 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-09-16 11:47:59,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:59,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1630208131, now seen corresponding path program 1 times [2022-09-16 11:47:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:59,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493717408] [2022-09-16 11:47:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:47:59,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:59,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493717408] [2022-09-16 11:47:59,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493717408] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:59,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:59,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:59,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314595567] [2022-09-16 11:47:59,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:59,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:59,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:59,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:59,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:59,585 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 375 [2022-09-16 11:47:59,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 424 transitions, 1539 flow. Second operand has 4 states, 4 states have (on average 341.75) internal successors, (1367), 4 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:59,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:59,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 375 [2022-09-16 11:47:59,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:02,093 INFO L130 PetriNetUnfolder]: 2920/16239 cut-off events. [2022-09-16 11:48:02,093 INFO L131 PetriNetUnfolder]: For 1145/1145 co-relation queries the response was YES. [2022-09-16 11:48:02,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23363 conditions, 16239 events. 2920/16239 cut-off events. For 1145/1145 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 197635 event pairs, 672 based on Foata normal form. 0/13775 useless extension candidates. Maximal degree in co-relation 19959. Up to 2073 conditions per place. [2022-09-16 11:48:02,289 INFO L137 encePairwiseOnDemand]: 369/375 looper letters, 34 selfloop transitions, 4 changer transitions 0/443 dead transitions. [2022-09-16 11:48:02,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 443 transitions, 1664 flow [2022-09-16 11:48:02,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:48:02,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:48:02,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1740 transitions. [2022-09-16 11:48:02,292 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.928 [2022-09-16 11:48:02,292 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1740 transitions. [2022-09-16 11:48:02,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1740 transitions. [2022-09-16 11:48:02,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:02,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1740 transitions. [2022-09-16 11:48:02,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 348.0) internal successors, (1740), 5 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,296 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,296 INFO L175 Difference]: Start difference. First operand has 395 places, 424 transitions, 1539 flow. Second operand 5 states and 1740 transitions. [2022-09-16 11:48:02,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 443 transitions, 1664 flow [2022-09-16 11:48:02,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 443 transitions, 1638 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:48:02,307 INFO L231 Difference]: Finished difference. Result has 396 places, 427 transitions, 1543 flow [2022-09-16 11:48:02,307 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1543, PETRI_PLACES=396, PETRI_TRANSITIONS=427} [2022-09-16 11:48:02,308 INFO L287 CegarLoopForPetriNet]: 320 programPoint places, 76 predicate places. [2022-09-16 11:48:02,308 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 427 transitions, 1543 flow [2022-09-16 11:48:02,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 341.75) internal successors, (1367), 4 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:02,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:02,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:48:02,309 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-09-16 11:48:02,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:02,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1026819142, now seen corresponding path program 1 times [2022-09-16 11:48:02,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:02,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669606841] [2022-09-16 11:48:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:02,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:02,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669606841] [2022-09-16 11:48:02,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669606841] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:02,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:02,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-16 11:48:02,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844644666] [2022-09-16 11:48:02,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:02,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:48:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:02,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:48:02,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:48:02,504 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 375 [2022-09-16 11:48:02,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 427 transitions, 1543 flow. Second operand has 12 states, 12 states have (on average 263.1666666666667) internal successors, (3158), 12 states have internal predecessors, (3158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:02,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 375 [2022-09-16 11:48:02,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:27,738 INFO L130 PetriNetUnfolder]: 54104/147685 cut-off events. [2022-09-16 11:48:27,738 INFO L131 PetriNetUnfolder]: For 28051/28051 co-relation queries the response was YES. [2022-09-16 11:48:29,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239510 conditions, 147685 events. 54104/147685 cut-off events. For 28051/28051 co-relation queries the response was YES. Maximal size of possible extension queue 2900. Compared 2077487 event pairs, 31920 based on Foata normal form. 0/112785 useless extension candidates. Maximal degree in co-relation 205229. Up to 34965 conditions per place. [2022-09-16 11:48:30,497 INFO L137 encePairwiseOnDemand]: 356/375 looper letters, 271 selfloop transitions, 31 changer transitions 0/562 dead transitions. [2022-09-16 11:48:30,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 562 transitions, 2611 flow [2022-09-16 11:48:30,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:48:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:48:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4599 transitions. [2022-09-16 11:48:30,503 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7214117647058823 [2022-09-16 11:48:30,503 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4599 transitions. [2022-09-16 11:48:30,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4599 transitions. [2022-09-16 11:48:30,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:30,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4599 transitions. [2022-09-16 11:48:30,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 270.52941176470586) internal successors, (4599), 17 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:30,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 375.0) internal successors, (6750), 18 states have internal predecessors, (6750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:30,523 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 375.0) internal successors, (6750), 18 states have internal predecessors, (6750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:30,523 INFO L175 Difference]: Start difference. First operand has 396 places, 427 transitions, 1543 flow. Second operand 17 states and 4599 transitions. [2022-09-16 11:48:30,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 562 transitions, 2611 flow [2022-09-16 11:48:30,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 562 transitions, 2609 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:48:30,595 INFO L231 Difference]: Finished difference. Result has 418 places, 434 transitions, 1667 flow [2022-09-16 11:48:30,596 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1667, PETRI_PLACES=418, PETRI_TRANSITIONS=434} [2022-09-16 11:48:30,598 INFO L287 CegarLoopForPetriNet]: 320 programPoint places, 98 predicate places. [2022-09-16 11:48:30,598 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 434 transitions, 1667 flow [2022-09-16 11:48:30,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 263.1666666666667) internal successors, (3158), 12 states have internal predecessors, (3158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:30,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:30,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:30,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:48:30,599 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-09-16 11:48:30,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:30,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1766621339, now seen corresponding path program 1 times [2022-09-16 11:48:30,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:30,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406496958] [2022-09-16 11:48:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:30,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:30,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:30,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406496958] [2022-09-16 11:48:30,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406496958] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:30,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:30,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:48:30,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251569548] [2022-09-16 11:48:30,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:30,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:48:30,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:30,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:48:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:48:30,701 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 375 [2022-09-16 11:48:30,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 434 transitions, 1667 flow. Second operand has 8 states, 8 states have (on average 294.5) internal successors, (2356), 8 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:30,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:30,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 375 [2022-09-16 11:48:30,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:57,243 INFO L130 PetriNetUnfolder]: 55162/150659 cut-off events. [2022-09-16 11:48:57,243 INFO L131 PetriNetUnfolder]: For 36038/36038 co-relation queries the response was YES. [2022-09-16 11:48:59,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252136 conditions, 150659 events. 55162/150659 cut-off events. For 36038/36038 co-relation queries the response was YES. Maximal size of possible extension queue 3061. Compared 2137912 event pairs, 25208 based on Foata normal form. 434/120221 useless extension candidates. Maximal degree in co-relation 215288. Up to 43568 conditions per place. [2022-09-16 11:49:00,280 INFO L137 encePairwiseOnDemand]: 362/375 looper letters, 187 selfloop transitions, 18 changer transitions 0/484 dead transitions. [2022-09-16 11:49:00,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 484 transitions, 2237 flow [2022-09-16 11:49:00,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:49:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:49:00,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3307 transitions. [2022-09-16 11:49:00,283 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8016969696969697 [2022-09-16 11:49:00,283 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3307 transitions. [2022-09-16 11:49:00,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3307 transitions. [2022-09-16 11:49:00,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:00,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3307 transitions. [2022-09-16 11:49:00,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 300.6363636363636) internal successors, (3307), 11 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:00,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 375.0) internal successors, (4500), 12 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:00,292 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 375.0) internal successors, (4500), 12 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:00,292 INFO L175 Difference]: Start difference. First operand has 418 places, 434 transitions, 1667 flow. Second operand 11 states and 3307 transitions. [2022-09-16 11:49:00,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 484 transitions, 2237 flow [2022-09-16 11:49:00,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 484 transitions, 2200 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-16 11:49:00,393 INFO L231 Difference]: Finished difference. Result has 422 places, 436 transitions, 1691 flow [2022-09-16 11:49:00,393 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1691, PETRI_PLACES=422, PETRI_TRANSITIONS=436} [2022-09-16 11:49:00,394 INFO L287 CegarLoopForPetriNet]: 320 programPoint places, 102 predicate places. [2022-09-16 11:49:00,394 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 436 transitions, 1691 flow [2022-09-16 11:49:00,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 294.5) internal successors, (2356), 8 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:00,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:00,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:00,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:49:00,395 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-09-16 11:49:00,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash 46253062, now seen corresponding path program 1 times [2022-09-16 11:49:00,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:00,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020123030] [2022-09-16 11:49:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:00,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:00,546 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 11:49:00,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:00,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020123030] [2022-09-16 11:49:00,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020123030] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:49:00,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518291515] [2022-09-16 11:49:00,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:00,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:49:00,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:49:00,549 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:49:00,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:49:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:00,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:49:00,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:49:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:49:00,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:49:00,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518291515] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:00,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:49:00,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2022-09-16 11:49:00,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485334378] [2022-09-16 11:49:00,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:00,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:49:00,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:00,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:49:00,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-09-16 11:49:00,951 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 375 [2022-09-16 11:49:00,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 436 transitions, 1691 flow. Second operand has 9 states, 9 states have (on average 273.55555555555554) internal successors, (2462), 9 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:00,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:00,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 375 [2022-09-16 11:49:00,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand