/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/pthread/fib_safe-10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:26:45,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:26:45,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:26:45,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:26:45,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:26:45,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:26:45,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:26:45,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:26:45,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:26:45,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:26:45,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:26:45,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:26:45,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:26:45,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:26:45,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:26:45,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:26:45,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:26:45,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:26:45,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:26:45,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:26:45,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:26:45,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:26:45,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:26:45,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:26:45,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:26:45,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:26:45,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:26:45,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:26:45,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:26:45,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:26:45,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:26:45,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:26:45,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:26:45,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:26:45,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:26:45,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:26:45,926 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 11:26:45,961 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:26:45,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:26:45,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:26:45,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:26:45,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:26:45,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:26:45,968 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:26:45,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:26:45,968 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:26:45,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:26:45,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:26:45,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:26:45,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:26:45,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:26:45,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:26:45,969 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:26:45,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:26:45,970 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:26:45,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:26:45,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:26:45,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:26:45,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:26:45,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:26:45,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:26:45,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:26:45,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:26:45,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:26:45,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:26:45,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:26:45,972 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:26:45,973 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:26:45,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:26:46,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:26:46,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:26:46,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:26:46,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:26:46,257 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:26:46,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-10.i [2022-09-16 11:26:46,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c232c2d5/6f19deb8a62841d8acb98a4cfceba77c/FLAGf280352c1 [2022-09-16 11:26:46,863 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:26:46,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-10.i [2022-09-16 11:26:46,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c232c2d5/6f19deb8a62841d8acb98a4cfceba77c/FLAGf280352c1 [2022-09-16 11:26:47,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c232c2d5/6f19deb8a62841d8acb98a4cfceba77c [2022-09-16 11:26:47,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:26:47,346 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:26:47,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:26:47,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:26:47,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:26:47,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f0ef09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47, skipping insertion in model container [2022-09-16 11:26:47,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:26:47,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:26:47,710 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-10.i[30815,30828] [2022-09-16 11:26:47,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:26:47,727 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:26:47,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-10.i[30815,30828] [2022-09-16 11:26:47,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:26:47,819 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:26:47,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47 WrapperNode [2022-09-16 11:26:47,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:26:47,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:26:47,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:26:47,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:26:47,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,894 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-09-16 11:26:47,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:26:47,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:26:47,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:26:47,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:26:47,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:26:47,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:26:47,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:26:47,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:26:47,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:26:47,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:47,956 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 11:26:47,958 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 11:26:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-09-16 11:26:47,987 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-09-16 11:26:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-09-16 11:26:47,987 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-09-16 11:26:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:26:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:26:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:26:47,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:26:47,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:26:47,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:26:47,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:26:47,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:26:47,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:26:47,989 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 11:26:48,112 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:26:48,113 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:26:48,390 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:26:48,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:26:48,425 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:26:48,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:26:48 BoogieIcfgContainer [2022-09-16 11:26:48,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:26:48,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:26:48,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:26:48,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:26:48,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:26:47" (1/3) ... [2022-09-16 11:26:48,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413ba033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:26:48, skipping insertion in model container [2022-09-16 11:26:48,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (2/3) ... [2022-09-16 11:26:48,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413ba033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:26:48, skipping insertion in model container [2022-09-16 11:26:48,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:26:48" (3/3) ... [2022-09-16 11:26:48,449 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-10.i [2022-09-16 11:26:48,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:26:48,466 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-09-16 11:26:48,467 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:26:48,572 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-16 11:26:48,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 240 flow [2022-09-16 11:26:48,663 INFO L130 PetriNetUnfolder]: 7/113 cut-off events. [2022-09-16 11:26:48,663 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:26:48,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 113 events. 7/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 151 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-09-16 11:26:48,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 115 transitions, 240 flow [2022-09-16 11:26:48,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 113 transitions, 232 flow [2022-09-16 11:26:48,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:26:48,691 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;@485fc35e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:26:48,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-09-16 11:26:48,702 INFO L130 PetriNetUnfolder]: 1/41 cut-off events. [2022-09-16 11:26:48,702 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:26:48,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:48,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:26:48,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:48,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:48,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2090278822, now seen corresponding path program 1 times [2022-09-16 11:26:48,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:48,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837218249] [2022-09-16 11:26:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:48,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:49,006 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 11:26:49,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:49,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837218249] [2022-09-16 11:26:49,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837218249] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:49,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:49,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:49,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830466732] [2022-09-16 11:26:49,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:49,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:49,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:49,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:49,073 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:49,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 113 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:49,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:49,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:49,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:49,276 INFO L130 PetriNetUnfolder]: 131/521 cut-off events. [2022-09-16 11:26:49,277 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-09-16 11:26:49,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 521 events. 131/521 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2951 event pairs, 70 based on Foata normal form. 86/422 useless extension candidates. Maximal degree in co-relation 690. Up to 127 conditions per place. [2022-09-16 11:26:49,289 INFO L137 encePairwiseOnDemand]: 103/115 looper letters, 22 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2022-09-16 11:26:49,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 305 flow [2022-09-16 11:26:49,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:26:49,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:26:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2022-09-16 11:26:49,307 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9282608695652174 [2022-09-16 11:26:49,308 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 427 transitions. [2022-09-16 11:26:49,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 427 transitions. [2022-09-16 11:26:49,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:49,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 427 transitions. [2022-09-16 11:26:49,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:49,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:49,325 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:49,326 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 232 flow. Second operand 4 states and 427 transitions. [2022-09-16 11:26:49,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 305 flow [2022-09-16 11:26:49,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 121 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:26:49,334 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 251 flow [2022-09-16 11:26:49,336 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2022-09-16 11:26:49,339 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 1 predicate places. [2022-09-16 11:26:49,340 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 251 flow [2022-09-16 11:26:49,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:49,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:49,340 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] [2022-09-16 11:26:49,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:26:49,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:49,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:49,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1286757501, now seen corresponding path program 1 times [2022-09-16 11:26:49,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:49,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616012922] [2022-09-16 11:26:49,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:49,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:49,431 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 11:26:49,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:49,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616012922] [2022-09-16 11:26:49,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616012922] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:49,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:49,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:49,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041707010] [2022-09-16 11:26:49,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:49,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:49,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:49,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:49,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:49,439 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:49,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 251 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:49,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:49,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:49,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:49,607 INFO L130 PetriNetUnfolder]: 109/309 cut-off events. [2022-09-16 11:26:49,610 INFO L131 PetriNetUnfolder]: For 40/59 co-relation queries the response was YES. [2022-09-16 11:26:49,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 309 events. 109/309 cut-off events. For 40/59 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1533 event pairs, 13 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 614. Up to 109 conditions per place. [2022-09-16 11:26:49,620 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 32 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2022-09-16 11:26:49,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 127 transitions, 375 flow [2022-09-16 11:26:49,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:49,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 502 transitions. [2022-09-16 11:26:49,631 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8730434782608696 [2022-09-16 11:26:49,631 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 502 transitions. [2022-09-16 11:26:49,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 502 transitions. [2022-09-16 11:26:49,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:49,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 502 transitions. [2022-09-16 11:26:49,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:49,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:49,636 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:49,636 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 251 flow. Second operand 5 states and 502 transitions. [2022-09-16 11:26:49,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 127 transitions, 375 flow [2022-09-16 11:26:49,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 127 transitions, 375 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:26:49,642 INFO L231 Difference]: Finished difference. Result has 121 places, 114 transitions, 283 flow [2022-09-16 11:26:49,643 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=121, PETRI_TRANSITIONS=114} [2022-09-16 11:26:49,643 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 8 predicate places. [2022-09-16 11:26:49,644 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 114 transitions, 283 flow [2022-09-16 11:26:49,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:49,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:49,644 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:26:49,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:26:49,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:49,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:49,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1214232894, now seen corresponding path program 1 times [2022-09-16 11:26:49,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:49,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056649755] [2022-09-16 11:26:49,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:49,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:49,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:49,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056649755] [2022-09-16 11:26:49,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056649755] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:49,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936520338] [2022-09-16 11:26:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:49,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:49,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:49,759 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 11:26:49,766 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 11:26:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:49,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:49,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:50,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:26:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:50,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936520338] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:26:50,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:26:50,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-09-16 11:26:50,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063525028] [2022-09-16 11:26:50,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:26:50,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:26:50,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:50,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:26:50,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:26:50,118 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:50,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 114 transitions, 283 flow. Second operand has 11 states, 11 states have (on average 97.54545454545455) internal successors, (1073), 11 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:50,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:50,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:50,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:50,626 INFO L130 PetriNetUnfolder]: 381/1587 cut-off events. [2022-09-16 11:26:50,626 INFO L131 PetriNetUnfolder]: For 233/254 co-relation queries the response was YES. [2022-09-16 11:26:50,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 1587 events. 381/1587 cut-off events. For 233/254 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13508 event pairs, 36 based on Foata normal form. 0/1209 useless extension candidates. Maximal degree in co-relation 2839. Up to 364 conditions per place. [2022-09-16 11:26:50,650 INFO L137 encePairwiseOnDemand]: 105/115 looper letters, 65 selfloop transitions, 41 changer transitions 0/203 dead transitions. [2022-09-16 11:26:50,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 203 transitions, 787 flow [2022-09-16 11:26:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:26:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:26:50,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1853 transitions. [2022-09-16 11:26:50,702 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8951690821256039 [2022-09-16 11:26:50,703 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1853 transitions. [2022-09-16 11:26:50,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1853 transitions. [2022-09-16 11:26:50,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:50,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1853 transitions. [2022-09-16 11:26:50,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.94444444444444) internal successors, (1853), 18 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:50,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 115.0) internal successors, (2185), 19 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:50,717 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 115.0) internal successors, (2185), 19 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:50,717 INFO L175 Difference]: Start difference. First operand has 121 places, 114 transitions, 283 flow. Second operand 18 states and 1853 transitions. [2022-09-16 11:26:50,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 203 transitions, 787 flow [2022-09-16 11:26:50,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 203 transitions, 785 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:26:50,724 INFO L231 Difference]: Finished difference. Result has 152 places, 155 transitions, 675 flow [2022-09-16 11:26:50,724 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=675, PETRI_PLACES=152, PETRI_TRANSITIONS=155} [2022-09-16 11:26:50,725 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 39 predicate places. [2022-09-16 11:26:50,725 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 155 transitions, 675 flow [2022-09-16 11:26:50,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 97.54545454545455) internal successors, (1073), 11 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:50,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:50,726 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:26:50,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 11:26:50,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:50,927 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:50,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:50,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1214232893, now seen corresponding path program 1 times [2022-09-16 11:26:50,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:50,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032754815] [2022-09-16 11:26:50,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:50,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:51,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:51,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032754815] [2022-09-16 11:26:51,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032754815] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:51,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6626601] [2022-09-16 11:26:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:51,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:51,027 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 11:26:51,029 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 11:26:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:51,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:51,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:51,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6626601] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:51,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:51,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-09-16 11:26:51,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815467781] [2022-09-16 11:26:51,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:51,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:26:51,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:51,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:26:51,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:26:51,180 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:51,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 155 transitions, 675 flow. Second operand has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:51,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:51,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:51,360 INFO L130 PetriNetUnfolder]: 176/898 cut-off events. [2022-09-16 11:26:51,362 INFO L131 PetriNetUnfolder]: For 4689/4899 co-relation queries the response was YES. [2022-09-16 11:26:51,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 898 events. 176/898 cut-off events. For 4689/4899 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6708 event pairs, 50 based on Foata normal form. 208/984 useless extension candidates. Maximal degree in co-relation 2458. Up to 157 conditions per place. [2022-09-16 11:26:51,379 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 25 selfloop transitions, 14 changer transitions 0/136 dead transitions. [2022-09-16 11:26:51,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 136 transitions, 614 flow [2022-09-16 11:26:51,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2022-09-16 11:26:51,382 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8747826086956522 [2022-09-16 11:26:51,382 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2022-09-16 11:26:51,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2022-09-16 11:26:51,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:51,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2022-09-16 11:26:51,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,385 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,385 INFO L175 Difference]: Start difference. First operand has 152 places, 155 transitions, 675 flow. Second operand 5 states and 503 transitions. [2022-09-16 11:26:51,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 136 transitions, 614 flow [2022-09-16 11:26:51,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 136 transitions, 529 flow, removed 25 selfloop flow, removed 14 redundant places. [2022-09-16 11:26:51,401 INFO L231 Difference]: Finished difference. Result has 138 places, 131 transitions, 468 flow [2022-09-16 11:26:51,402 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=468, PETRI_PLACES=138, PETRI_TRANSITIONS=131} [2022-09-16 11:26:51,403 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 25 predicate places. [2022-09-16 11:26:51,403 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 131 transitions, 468 flow [2022-09-16 11:26:51,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:51,404 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] [2022-09-16 11:26:51,434 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 11:26:51,619 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,SelfDestructingSolverStorable3 [2022-09-16 11:26:51,620 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:51,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:51,620 INFO L85 PathProgramCache]: Analyzing trace with hash -447258493, now seen corresponding path program 1 times [2022-09-16 11:26:51,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:51,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435991884] [2022-09-16 11:26:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,697 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 11:26:51,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:51,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435991884] [2022-09-16 11:26:51,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435991884] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:51,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:51,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:51,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164526143] [2022-09-16 11:26:51,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:51,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:51,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:51,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:51,700 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:51,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 131 transitions, 468 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:51,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:51,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:51,874 INFO L130 PetriNetUnfolder]: 168/722 cut-off events. [2022-09-16 11:26:51,875 INFO L131 PetriNetUnfolder]: For 1848/1962 co-relation queries the response was YES. [2022-09-16 11:26:51,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 722 events. 168/722 cut-off events. For 1848/1962 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4607 event pairs, 37 based on Foata normal form. 17/672 useless extension candidates. Maximal degree in co-relation 1991. Up to 196 conditions per place. [2022-09-16 11:26:51,898 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 62 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2022-09-16 11:26:51,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 160 transitions, 787 flow [2022-09-16 11:26:51,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:51,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2022-09-16 11:26:51,901 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8573913043478261 [2022-09-16 11:26:51,901 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2022-09-16 11:26:51,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2022-09-16 11:26:51,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:51,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2022-09-16 11:26:51,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,906 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,906 INFO L175 Difference]: Start difference. First operand has 138 places, 131 transitions, 468 flow. Second operand 5 states and 493 transitions. [2022-09-16 11:26:51,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 160 transitions, 787 flow [2022-09-16 11:26:51,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 160 transitions, 784 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:26:51,933 INFO L231 Difference]: Finished difference. Result has 143 places, 134 transitions, 497 flow [2022-09-16 11:26:51,934 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=497, PETRI_PLACES=143, PETRI_TRANSITIONS=134} [2022-09-16 11:26:51,936 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 30 predicate places. [2022-09-16 11:26:51,937 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 134 transitions, 497 flow [2022-09-16 11:26:51,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:51,937 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:26:51,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:26:51,937 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:51,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:51,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1353304293, now seen corresponding path program 1 times [2022-09-16 11:26:51,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:51,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434547353] [2022-09-16 11:26:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:26:52,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:52,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434547353] [2022-09-16 11:26:52,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434547353] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:52,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:52,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770117073] [2022-09-16 11:26:52,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:52,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:52,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:52,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:52,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:52,006 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:52,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 134 transitions, 497 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:52,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:52,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:52,161 INFO L130 PetriNetUnfolder]: 189/682 cut-off events. [2022-09-16 11:26:52,161 INFO L131 PetriNetUnfolder]: For 1854/2009 co-relation queries the response was YES. [2022-09-16 11:26:52,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 682 events. 189/682 cut-off events. For 1854/2009 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4465 event pairs, 31 based on Foata normal form. 33/662 useless extension candidates. Maximal degree in co-relation 2118. Up to 142 conditions per place. [2022-09-16 11:26:52,184 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 59 selfloop transitions, 8 changer transitions 0/161 dead transitions. [2022-09-16 11:26:52,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 161 transitions, 845 flow [2022-09-16 11:26:52,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2022-09-16 11:26:52,186 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8469565217391304 [2022-09-16 11:26:52,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2022-09-16 11:26:52,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2022-09-16 11:26:52,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:52,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2022-09-16 11:26:52,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,190 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,190 INFO L175 Difference]: Start difference. First operand has 143 places, 134 transitions, 497 flow. Second operand 5 states and 487 transitions. [2022-09-16 11:26:52,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 161 transitions, 845 flow [2022-09-16 11:26:52,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 161 transitions, 843 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:26:52,198 INFO L231 Difference]: Finished difference. Result has 146 places, 134 transitions, 515 flow [2022-09-16 11:26:52,199 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=515, PETRI_PLACES=146, PETRI_TRANSITIONS=134} [2022-09-16 11:26:52,201 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 33 predicate places. [2022-09-16 11:26:52,202 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 134 transitions, 515 flow [2022-09-16 11:26:52,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:52,202 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] [2022-09-16 11:26:52,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:26:52,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2117796030, now seen corresponding path program 1 times [2022-09-16 11:26:52,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860327708] [2022-09-16 11:26:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:52,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,253 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 11:26:52,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:52,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860327708] [2022-09-16 11:26:52,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860327708] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:52,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:52,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:52,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265412962] [2022-09-16 11:26:52,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:52,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:52,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:52,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:52,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:52,256 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 115 [2022-09-16 11:26:52,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 134 transitions, 515 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:52,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 115 [2022-09-16 11:26:52,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:52,730 INFO L130 PetriNetUnfolder]: 713/2548 cut-off events. [2022-09-16 11:26:52,730 INFO L131 PetriNetUnfolder]: For 6530/6901 co-relation queries the response was YES. [2022-09-16 11:26:52,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7300 conditions, 2548 events. 713/2548 cut-off events. For 6530/6901 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 22138 event pairs, 111 based on Foata normal form. 36/2333 useless extension candidates. Maximal degree in co-relation 7236. Up to 593 conditions per place. [2022-09-16 11:26:52,778 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 86 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2022-09-16 11:26:52,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 188 transitions, 1075 flow [2022-09-16 11:26:52,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:26:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:26:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2022-09-16 11:26:52,781 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8739130434782608 [2022-09-16 11:26:52,781 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2022-09-16 11:26:52,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2022-09-16 11:26:52,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:52,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2022-09-16 11:26:52,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,784 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,784 INFO L175 Difference]: Start difference. First operand has 146 places, 134 transitions, 515 flow. Second operand 4 states and 402 transitions. [2022-09-16 11:26:52,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 188 transitions, 1075 flow [2022-09-16 11:26:52,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 188 transitions, 1063 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:26:52,796 INFO L231 Difference]: Finished difference. Result has 148 places, 136 transitions, 529 flow [2022-09-16 11:26:52,796 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=148, PETRI_TRANSITIONS=136} [2022-09-16 11:26:52,797 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 35 predicate places. [2022-09-16 11:26:52,797 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 136 transitions, 529 flow [2022-09-16 11:26:52,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:52,797 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:26:52,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:26:52,798 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:52,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:52,798 INFO L85 PathProgramCache]: Analyzing trace with hash -997239562, now seen corresponding path program 1 times [2022-09-16 11:26:52,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:52,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151541193] [2022-09-16 11:26:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:52,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:52,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:52,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151541193] [2022-09-16 11:26:52,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151541193] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:52,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253751445] [2022-09-16 11:26:52,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:52,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:52,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:52,859 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 11:26:52,860 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 11:26:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:26:52,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:52,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:52,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253751445] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:52,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:52,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:26:52,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620477457] [2022-09-16 11:26:52,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:52,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:26:52,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:52,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:26:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:26:52,979 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:52,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 136 transitions, 529 flow. Second operand has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:52,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:52,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:53,183 INFO L130 PetriNetUnfolder]: 176/686 cut-off events. [2022-09-16 11:26:53,183 INFO L131 PetriNetUnfolder]: For 1808/1945 co-relation queries the response was YES. [2022-09-16 11:26:53,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2169 conditions, 686 events. 176/686 cut-off events. For 1808/1945 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4481 event pairs, 27 based on Foata normal form. 23/665 useless extension candidates. Maximal degree in co-relation 2101. Up to 136 conditions per place. [2022-09-16 11:26:53,210 INFO L137 encePairwiseOnDemand]: 110/115 looper letters, 62 selfloop transitions, 6 changer transitions 0/164 dead transitions. [2022-09-16 11:26:53,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 164 transitions, 873 flow [2022-09-16 11:26:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:26:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:26:53,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 680 transitions. [2022-09-16 11:26:53,213 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.84472049689441 [2022-09-16 11:26:53,213 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 680 transitions. [2022-09-16 11:26:53,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 680 transitions. [2022-09-16 11:26:53,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:53,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 680 transitions. [2022-09-16 11:26:53,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,218 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,218 INFO L175 Difference]: Start difference. First operand has 148 places, 136 transitions, 529 flow. Second operand 7 states and 680 transitions. [2022-09-16 11:26:53,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 164 transitions, 873 flow [2022-09-16 11:26:53,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 164 transitions, 871 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:26:53,226 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 535 flow [2022-09-16 11:26:53,226 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=535, PETRI_PLACES=152, PETRI_TRANSITIONS=135} [2022-09-16 11:26:53,228 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 39 predicate places. [2022-09-16 11:26:53,228 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 535 flow [2022-09-16 11:26:53,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:53,229 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:26:53,255 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 11:26:53,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:53,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:53,444 INFO L85 PathProgramCache]: Analyzing trace with hash 966995920, now seen corresponding path program 1 times [2022-09-16 11:26:53,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:53,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402899834] [2022-09-16 11:26:53,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:53,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:26:53,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:53,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402899834] [2022-09-16 11:26:53,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402899834] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:53,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:53,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:53,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948279596] [2022-09-16 11:26:53,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:53,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:53,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:53,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:53,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:53,488 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:53,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 135 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:53,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:53,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:53,657 INFO L130 PetriNetUnfolder]: 155/627 cut-off events. [2022-09-16 11:26:53,657 INFO L131 PetriNetUnfolder]: For 1733/1846 co-relation queries the response was YES. [2022-09-16 11:26:53,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 627 events. 155/627 cut-off events. For 1733/1846 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3783 event pairs, 24 based on Foata normal form. 32/627 useless extension candidates. Maximal degree in co-relation 1908. Up to 133 conditions per place. [2022-09-16 11:26:53,676 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 59 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2022-09-16 11:26:53,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 162 transitions, 874 flow [2022-09-16 11:26:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 484 transitions. [2022-09-16 11:26:53,679 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8417391304347827 [2022-09-16 11:26:53,679 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 484 transitions. [2022-09-16 11:26:53,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 484 transitions. [2022-09-16 11:26:53,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:53,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 484 transitions. [2022-09-16 11:26:53,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,682 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,682 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 535 flow. Second operand 5 states and 484 transitions. [2022-09-16 11:26:53,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 162 transitions, 874 flow [2022-09-16 11:26:53,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 162 transitions, 863 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 11:26:53,689 INFO L231 Difference]: Finished difference. Result has 151 places, 135 transitions, 544 flow [2022-09-16 11:26:53,690 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=544, PETRI_PLACES=151, PETRI_TRANSITIONS=135} [2022-09-16 11:26:53,690 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 38 predicate places. [2022-09-16 11:26:53,690 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 135 transitions, 544 flow [2022-09-16 11:26:53,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:53,691 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:26:53,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:26:53,691 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:53,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:53,692 INFO L85 PathProgramCache]: Analyzing trace with hash -87897220, now seen corresponding path program 1 times [2022-09-16 11:26:53,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:53,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817854431] [2022-09-16 11:26:53,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:53,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:53,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:53,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:53,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817854431] [2022-09-16 11:26:53,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817854431] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:53,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808418186] [2022-09-16 11:26:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:53,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:53,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:53,739 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 11:26:53,748 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 11:26:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:53,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:53,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:53,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:53,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808418186] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:53,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:53,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-09-16 11:26:53,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199955580] [2022-09-16 11:26:53,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:53,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:26:53,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:53,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:26:53,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:26:53,864 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:53,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 135 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:53,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:53,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:54,007 INFO L130 PetriNetUnfolder]: 148/621 cut-off events. [2022-09-16 11:26:54,008 INFO L131 PetriNetUnfolder]: For 1731/1863 co-relation queries the response was YES. [2022-09-16 11:26:54,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 621 events. 148/621 cut-off events. For 1731/1863 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3726 event pairs, 29 based on Foata normal form. 23/602 useless extension candidates. Maximal degree in co-relation 1924. Up to 150 conditions per place. [2022-09-16 11:26:54,032 INFO L137 encePairwiseOnDemand]: 111/115 looper letters, 43 selfloop transitions, 5 changer transitions 0/143 dead transitions. [2022-09-16 11:26:54,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 143 transitions, 705 flow [2022-09-16 11:26:54,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:26:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:26:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2022-09-16 11:26:54,034 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.841304347826087 [2022-09-16 11:26:54,034 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2022-09-16 11:26:54,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2022-09-16 11:26:54,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:54,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2022-09-16 11:26:54,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:54,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:54,037 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:54,037 INFO L175 Difference]: Start difference. First operand has 151 places, 135 transitions, 544 flow. Second operand 4 states and 387 transitions. [2022-09-16 11:26:54,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 143 transitions, 705 flow [2022-09-16 11:26:54,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 143 transitions, 693 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:26:54,045 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 538 flow [2022-09-16 11:26:54,046 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=538, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2022-09-16 11:26:54,047 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 37 predicate places. [2022-09-16 11:26:54,047 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 538 flow [2022-09-16 11:26:54,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:54,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:54,047 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] [2022-09-16 11:26:54,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-16 11:26:54,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:54,275 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:54,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:54,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1641089002, now seen corresponding path program 1 times [2022-09-16 11:26:54,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:54,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543412952] [2022-09-16 11:26:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:54,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:54,307 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 11:26:54,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:54,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543412952] [2022-09-16 11:26:54,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543412952] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:54,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:54,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:54,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230503103] [2022-09-16 11:26:54,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:54,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:54,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:54,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:54,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:54,309 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-09-16 11:26:54,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 538 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:54,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:54,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-09-16 11:26:54,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:54,711 INFO L130 PetriNetUnfolder]: 844/2484 cut-off events. [2022-09-16 11:26:54,712 INFO L131 PetriNetUnfolder]: For 6940/7316 co-relation queries the response was YES. [2022-09-16 11:26:54,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7560 conditions, 2484 events. 844/2484 cut-off events. For 6940/7316 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 20006 event pairs, 86 based on Foata normal form. 12/2250 useless extension candidates. Maximal degree in co-relation 7490. Up to 664 conditions per place. [2022-09-16 11:26:54,743 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 112 selfloop transitions, 4 changer transitions 0/212 dead transitions. [2022-09-16 11:26:54,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 212 transitions, 1334 flow [2022-09-16 11:26:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2022-09-16 11:26:54,746 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8539130434782609 [2022-09-16 11:26:54,746 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2022-09-16 11:26:54,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2022-09-16 11:26:54,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:54,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2022-09-16 11:26:54,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:54,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:54,749 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:54,749 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 538 flow. Second operand 5 states and 491 transitions. [2022-09-16 11:26:54,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 212 transitions, 1334 flow [2022-09-16 11:26:54,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 212 transitions, 1324 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:26:54,761 INFO L231 Difference]: Finished difference. Result has 154 places, 137 transitions, 560 flow [2022-09-16 11:26:54,761 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=560, PETRI_PLACES=154, PETRI_TRANSITIONS=137} [2022-09-16 11:26:54,762 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 41 predicate places. [2022-09-16 11:26:54,763 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 137 transitions, 560 flow [2022-09-16 11:26:54,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:54,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:54,763 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:26:54,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:26:54,763 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:54,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1948310297, now seen corresponding path program 1 times [2022-09-16 11:26:54,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:54,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481601231] [2022-09-16 11:26:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:54,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:54,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:54,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481601231] [2022-09-16 11:26:54,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481601231] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:54,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276048335] [2022-09-16 11:26:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:54,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:54,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:54,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:26:54,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:26:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:54,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:26:54,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:55,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:26:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:55,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276048335] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:26:55,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:26:55,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-09-16 11:26:55,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989734165] [2022-09-16 11:26:55,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:26:55,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:26:55,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:55,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:26:55,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:26:55,245 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:55,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 137 transitions, 560 flow. Second operand has 17 states, 17 states have (on average 94.94117647058823) internal successors, (1614), 17 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:55,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:55,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:55,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:56,028 INFO L130 PetriNetUnfolder]: 1218/4083 cut-off events. [2022-09-16 11:26:56,029 INFO L131 PetriNetUnfolder]: For 9443/9990 co-relation queries the response was YES. [2022-09-16 11:26:56,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11304 conditions, 4083 events. 1218/4083 cut-off events. For 9443/9990 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 36860 event pairs, 80 based on Foata normal form. 78/3901 useless extension candidates. Maximal degree in co-relation 11229. Up to 690 conditions per place. [2022-09-16 11:26:56,098 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 211 selfloop transitions, 11 changer transitions 0/320 dead transitions. [2022-09-16 11:26:56,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 320 transitions, 2330 flow [2022-09-16 11:26:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:26:56,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:26:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1071 transitions. [2022-09-16 11:26:56,102 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8466403162055336 [2022-09-16 11:26:56,102 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1071 transitions. [2022-09-16 11:26:56,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1071 transitions. [2022-09-16 11:26:56,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:56,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1071 transitions. [2022-09-16 11:26:56,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 97.36363636363636) internal successors, (1071), 11 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:56,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:56,108 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:56,108 INFO L175 Difference]: Start difference. First operand has 154 places, 137 transitions, 560 flow. Second operand 11 states and 1071 transitions. [2022-09-16 11:26:56,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 320 transitions, 2330 flow [2022-09-16 11:26:56,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 320 transitions, 2328 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:26:56,125 INFO L231 Difference]: Finished difference. Result has 167 places, 142 transitions, 615 flow [2022-09-16 11:26:56,125 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=615, PETRI_PLACES=167, PETRI_TRANSITIONS=142} [2022-09-16 11:26:56,126 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 54 predicate places. [2022-09-16 11:26:56,126 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 142 transitions, 615 flow [2022-09-16 11:26:56,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 94.94117647058823) internal successors, (1614), 17 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:56,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:56,127 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:26:56,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:26:56,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-16 11:26:56,344 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:56,344 INFO L85 PathProgramCache]: Analyzing trace with hash 268077310, now seen corresponding path program 1 times [2022-09-16 11:26:56,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:56,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688059964] [2022-09-16 11:26:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:56,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:56,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:56,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688059964] [2022-09-16 11:26:56,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688059964] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:56,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776762063] [2022-09-16 11:26:56,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:56,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:56,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:56,442 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:26:56,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:26:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:56,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:26:56,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:56,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:56,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776762063] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:56,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:56,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-09-16 11:26:56,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585624224] [2022-09-16 11:26:56,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:56,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:26:56,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:56,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:26:56,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:26:56,692 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:56,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 142 transitions, 615 flow. Second operand has 7 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:56,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:56,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:56,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:57,366 INFO L130 PetriNetUnfolder]: 1071/3807 cut-off events. [2022-09-16 11:26:57,367 INFO L131 PetriNetUnfolder]: For 8653/9131 co-relation queries the response was YES. [2022-09-16 11:26:57,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10664 conditions, 3807 events. 1071/3807 cut-off events. For 8653/9131 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 34093 event pairs, 56 based on Foata normal form. 100/3662 useless extension candidates. Maximal degree in co-relation 10582. Up to 1302 conditions per place. [2022-09-16 11:26:57,433 INFO L137 encePairwiseOnDemand]: 110/115 looper letters, 90 selfloop transitions, 4 changer transitions 0/192 dead transitions. [2022-09-16 11:26:57,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 192 transitions, 1179 flow [2022-09-16 11:26:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:26:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:26:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 581 transitions. [2022-09-16 11:26:57,435 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8420289855072464 [2022-09-16 11:26:57,435 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 581 transitions. [2022-09-16 11:26:57,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 581 transitions. [2022-09-16 11:26:57,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:57,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 581 transitions. [2022-09-16 11:26:57,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,438 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,438 INFO L175 Difference]: Start difference. First operand has 167 places, 142 transitions, 615 flow. Second operand 6 states and 581 transitions. [2022-09-16 11:26:57,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 192 transitions, 1179 flow [2022-09-16 11:26:57,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 192 transitions, 1163 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-16 11:26:57,455 INFO L231 Difference]: Finished difference. Result has 168 places, 142 transitions, 613 flow [2022-09-16 11:26:57,456 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=613, PETRI_PLACES=168, PETRI_TRANSITIONS=142} [2022-09-16 11:26:57,456 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 55 predicate places. [2022-09-16 11:26:57,457 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 142 transitions, 613 flow [2022-09-16 11:26:57,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:57,457 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2022-09-16 11:26:57,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:26:57,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:57,672 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:57,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:57,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1142354715, now seen corresponding path program 1 times [2022-09-16 11:26:57,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:57,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508858790] [2022-09-16 11:26:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:57,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:57,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:57,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508858790] [2022-09-16 11:26:57,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508858790] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:57,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637178899] [2022-09-16 11:26:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:57,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:57,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:57,762 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:26:57,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:26:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:57,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:26:57,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:57,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:26:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:58,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637178899] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:26:58,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:26:58,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-09-16 11:26:58,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438796452] [2022-09-16 11:26:58,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:26:58,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:26:58,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:58,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:26:58,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:26:58,082 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:58,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 142 transitions, 613 flow. Second operand has 17 states, 17 states have (on average 97.52941176470588) internal successors, (1658), 17 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:58,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:58,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:58,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:59,349 INFO L130 PetriNetUnfolder]: 1030/4727 cut-off events. [2022-09-16 11:26:59,349 INFO L131 PetriNetUnfolder]: For 21394/22087 co-relation queries the response was YES. [2022-09-16 11:26:59,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13491 conditions, 4727 events. 1030/4727 cut-off events. For 21394/22087 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 51928 event pairs, 49 based on Foata normal form. 568/4906 useless extension candidates. Maximal degree in co-relation 13408. Up to 641 conditions per place. [2022-09-16 11:26:59,576 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 74 selfloop transitions, 58 changer transitions 0/240 dead transitions. [2022-09-16 11:26:59,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 240 transitions, 1431 flow [2022-09-16 11:26:59,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-09-16 11:26:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-09-16 11:26:59,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2733 transitions. [2022-09-16 11:26:59,583 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8801932367149758 [2022-09-16 11:26:59,583 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2733 transitions. [2022-09-16 11:26:59,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2733 transitions. [2022-09-16 11:26:59,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:59,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2733 transitions. [2022-09-16 11:26:59,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 101.22222222222223) internal successors, (2733), 27 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:59,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 115.0) internal successors, (3220), 28 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:59,599 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 115.0) internal successors, (3220), 28 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:59,599 INFO L175 Difference]: Start difference. First operand has 168 places, 142 transitions, 613 flow. Second operand 27 states and 2733 transitions. [2022-09-16 11:26:59,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 240 transitions, 1431 flow [2022-09-16 11:26:59,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 240 transitions, 1422 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-16 11:26:59,628 INFO L231 Difference]: Finished difference. Result has 204 places, 178 transitions, 1146 flow [2022-09-16 11:26:59,629 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1146, PETRI_PLACES=204, PETRI_TRANSITIONS=178} [2022-09-16 11:26:59,629 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 91 predicate places. [2022-09-16 11:26:59,630 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 178 transitions, 1146 flow [2022-09-16 11:26:59,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 97.52941176470588) internal successors, (1658), 17 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:59,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:59,631 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-09-16 11:26:59,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:26:59,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:59,848 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:59,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1331666383, now seen corresponding path program 1 times [2022-09-16 11:26:59,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:59,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903453340] [2022-09-16 11:26:59,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:59,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:59,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:26:59,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:59,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903453340] [2022-09-16 11:26:59,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903453340] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:59,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:59,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:59,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527832027] [2022-09-16 11:26:59,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:59,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:59,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:59,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:59,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:59,928 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-09-16 11:26:59,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 178 transitions, 1146 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:59,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:59,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-09-16 11:26:59,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:01,769 INFO L130 PetriNetUnfolder]: 2877/9793 cut-off events. [2022-09-16 11:27:01,769 INFO L131 PetriNetUnfolder]: For 72013/74302 co-relation queries the response was YES. [2022-09-16 11:27:01,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34976 conditions, 9793 events. 2877/9793 cut-off events. For 72013/74302 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 104064 event pairs, 378 based on Foata normal form. 134/9509 useless extension candidates. Maximal degree in co-relation 34881. Up to 2014 conditions per place. [2022-09-16 11:27:02,017 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 241 selfloop transitions, 8 changer transitions 0/352 dead transitions. [2022-09-16 11:27:02,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 352 transitions, 3520 flow [2022-09-16 11:27:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:27:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:27:02,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 483 transitions. [2022-09-16 11:27:02,019 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.84 [2022-09-16 11:27:02,019 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 483 transitions. [2022-09-16 11:27:02,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 483 transitions. [2022-09-16 11:27:02,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:02,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 483 transitions. [2022-09-16 11:27:02,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:02,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:02,022 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:02,022 INFO L175 Difference]: Start difference. First operand has 204 places, 178 transitions, 1146 flow. Second operand 5 states and 483 transitions. [2022-09-16 11:27:02,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 352 transitions, 3520 flow [2022-09-16 11:27:02,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 352 transitions, 3073 flow, removed 184 selfloop flow, removed 8 redundant places. [2022-09-16 11:27:02,141 INFO L231 Difference]: Finished difference. Result has 200 places, 178 transitions, 1025 flow [2022-09-16 11:27:02,142 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1025, PETRI_PLACES=200, PETRI_TRANSITIONS=178} [2022-09-16 11:27:02,142 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 87 predicate places. [2022-09-16 11:27:02,142 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 178 transitions, 1025 flow [2022-09-16 11:27:02,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:02,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:02,143 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2022-09-16 11:27:02,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:27:02,143 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:27:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:02,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1668015338, now seen corresponding path program 1 times [2022-09-16 11:27:02,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:02,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428261150] [2022-09-16 11:27:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:02,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:02,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:02,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428261150] [2022-09-16 11:27:02,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428261150] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:02,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012986563] [2022-09-16 11:27:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:02,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:02,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:02,189 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:27:02,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:27:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:02,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:27:02,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:02,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:27:02,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012986563] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:02,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:27:02,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-09-16 11:27:02,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270412384] [2022-09-16 11:27:02,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:02,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:27:02,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:02,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:27:02,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:27:02,293 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-09-16 11:27:02,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 178 transitions, 1025 flow. Second operand has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:02,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:02,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-09-16 11:27:02,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:03,943 INFO L130 PetriNetUnfolder]: 2705/9377 cut-off events. [2022-09-16 11:27:03,943 INFO L131 PetriNetUnfolder]: For 72399/73762 co-relation queries the response was YES. [2022-09-16 11:27:04,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34097 conditions, 9377 events. 2705/9377 cut-off events. For 72399/73762 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 99337 event pairs, 715 based on Foata normal form. 134/9151 useless extension candidates. Maximal degree in co-relation 34003. Up to 1966 conditions per place. [2022-09-16 11:27:04,070 INFO L137 encePairwiseOnDemand]: 111/115 looper letters, 127 selfloop transitions, 5 changer transitions 0/235 dead transitions. [2022-09-16 11:27:04,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 235 transitions, 1809 flow [2022-09-16 11:27:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:27:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:27:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2022-09-16 11:27:04,071 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8369565217391305 [2022-09-16 11:27:04,071 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2022-09-16 11:27:04,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2022-09-16 11:27:04,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:04,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2022-09-16 11:27:04,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,073 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,074 INFO L175 Difference]: Start difference. First operand has 200 places, 178 transitions, 1025 flow. Second operand 4 states and 385 transitions. [2022-09-16 11:27:04,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 235 transitions, 1809 flow [2022-09-16 11:27:04,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 235 transitions, 1787 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-09-16 11:27:04,173 INFO L231 Difference]: Finished difference. Result has 198 places, 177 transitions, 1012 flow [2022-09-16 11:27:04,173 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1012, PETRI_PLACES=198, PETRI_TRANSITIONS=177} [2022-09-16 11:27:04,173 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 85 predicate places. [2022-09-16 11:27:04,174 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 177 transitions, 1012 flow [2022-09-16 11:27:04,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:04,174 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-09-16 11:27:04,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:27:04,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:27:04,399 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:27:04,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2062810811, now seen corresponding path program 1 times [2022-09-16 11:27:04,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:04,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896917858] [2022-09-16 11:27:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:04,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:04,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:04,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896917858] [2022-09-16 11:27:04,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896917858] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:04,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310457785] [2022-09-16 11:27:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:04,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:04,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:04,503 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:27:04,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:27:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:04,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:27:04,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:04,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:04,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310457785] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:04,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:04,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-09-16 11:27:04,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199431027] [2022-09-16 11:27:04,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:04,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:27:04,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:04,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:27:04,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:27:04,966 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:27:04,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 177 transitions, 1012 flow. Second operand has 23 states, 23 states have (on average 97.3913043478261) internal successors, (2240), 23 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:04,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:27:04,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:07,888 INFO L130 PetriNetUnfolder]: 1927/9926 cut-off events. [2022-09-16 11:27:07,889 INFO L131 PetriNetUnfolder]: For 181103/182087 co-relation queries the response was YES. [2022-09-16 11:27:07,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30684 conditions, 9926 events. 1927/9926 cut-off events. For 181103/182087 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 124552 event pairs, 56 based on Foata normal form. 1082/10303 useless extension candidates. Maximal degree in co-relation 30587. Up to 1102 conditions per place. [2022-09-16 11:27:08,026 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 109 selfloop transitions, 157 changer transitions 0/373 dead transitions. [2022-09-16 11:27:08,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 373 transitions, 2950 flow [2022-09-16 11:27:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-09-16 11:27:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-09-16 11:27:08,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4549 transitions. [2022-09-16 11:27:08,032 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8790338164251208 [2022-09-16 11:27:08,032 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4549 transitions. [2022-09-16 11:27:08,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4549 transitions. [2022-09-16 11:27:08,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:08,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4549 transitions. [2022-09-16 11:27:08,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 101.08888888888889) internal successors, (4549), 45 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:08,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 115.0) internal successors, (5290), 46 states have internal predecessors, (5290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:08,050 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 115.0) internal successors, (5290), 46 states have internal predecessors, (5290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:08,050 INFO L175 Difference]: Start difference. First operand has 198 places, 177 transitions, 1012 flow. Second operand 45 states and 4549 transitions. [2022-09-16 11:27:08,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 373 transitions, 2950 flow [2022-09-16 11:27:08,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 373 transitions, 2912 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-09-16 11:27:08,173 INFO L231 Difference]: Finished difference. Result has 257 places, 280 transitions, 2573 flow [2022-09-16 11:27:08,174 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2573, PETRI_PLACES=257, PETRI_TRANSITIONS=280} [2022-09-16 11:27:08,174 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 144 predicate places. [2022-09-16 11:27:08,175 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 280 transitions, 2573 flow [2022-09-16 11:27:08,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 97.3913043478261) internal successors, (2240), 23 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:08,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:08,176 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:08,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-09-16 11:27:08,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-09-16 11:27:08,401 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:27:08,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:08,402 INFO L85 PathProgramCache]: Analyzing trace with hash 945577465, now seen corresponding path program 2 times [2022-09-16 11:27:08,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:08,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663008968] [2022-09-16 11:27:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:08,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:08,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:08,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663008968] [2022-09-16 11:27:08,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663008968] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:08,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835732339] [2022-09-16 11:27:08,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:27:08,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:08,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:08,642 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:27:08,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:27:08,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:27:08,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:27:08,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:27:08,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:09,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:09,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835732339] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:09,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:09,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-09-16 11:27:09,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667884081] [2022-09-16 11:27:09,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:09,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-09-16 11:27:09,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:09,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-09-16 11:27:09,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2022-09-16 11:27:09,295 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:27:09,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 280 transitions, 2573 flow. Second operand has 35 states, 35 states have (on average 94.8) internal successors, (3318), 35 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:09,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:09,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:27:09,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:19,668 INFO L130 PetriNetUnfolder]: 11112/40437 cut-off events. [2022-09-16 11:27:19,669 INFO L131 PetriNetUnfolder]: For 291174/296768 co-relation queries the response was YES. [2022-09-16 11:27:20,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140159 conditions, 40437 events. 11112/40437 cut-off events. For 291174/296768 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 520660 event pairs, 396 based on Foata normal form. 588/39608 useless extension candidates. Maximal degree in co-relation 140040. Up to 6934 conditions per place. [2022-09-16 11:27:20,822 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 3288 selfloop transitions, 23 changer transitions 0/3408 dead transitions. [2022-09-16 11:27:20,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 3408 transitions, 47553 flow [2022-09-16 11:27:20,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-09-16 11:27:20,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-09-16 11:27:20,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2234 transitions. [2022-09-16 11:27:20,827 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8446124763705104 [2022-09-16 11:27:20,827 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2234 transitions. [2022-09-16 11:27:20,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2234 transitions. [2022-09-16 11:27:20,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:20,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2234 transitions. [2022-09-16 11:27:20,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 97.1304347826087) internal successors, (2234), 23 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:20,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 115.0) internal successors, (2760), 24 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:20,834 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 115.0) internal successors, (2760), 24 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:20,834 INFO L175 Difference]: Start difference. First operand has 257 places, 280 transitions, 2573 flow. Second operand 23 states and 2234 transitions. [2022-09-16 11:27:20,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 3408 transitions, 47553 flow [2022-09-16 11:27:21,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 3408 transitions, 42686 flow, removed 1940 selfloop flow, removed 15 redundant places. [2022-09-16 11:27:21,409 INFO L231 Difference]: Finished difference. Result has 269 places, 293 transitions, 2475 flow [2022-09-16 11:27:21,409 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2475, PETRI_PLACES=269, PETRI_TRANSITIONS=293} [2022-09-16 11:27:21,410 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 156 predicate places. [2022-09-16 11:27:21,410 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 293 transitions, 2475 flow [2022-09-16 11:27:21,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 94.8) internal successors, (3318), 35 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:21,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:21,411 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 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] [2022-09-16 11:27:21,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-09-16 11:27:21,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-09-16 11:27:21,612 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:27:21,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:21,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1359729348, now seen corresponding path program 2 times [2022-09-16 11:27:21,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:21,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889754752] [2022-09-16 11:27:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:21,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:21,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:21,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889754752] [2022-09-16 11:27:21,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889754752] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:21,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399404381] [2022-09-16 11:27:21,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:27:21,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:21,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:21,729 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:27:21,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:27:21,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:27:21,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:27:21,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:27:21,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:22,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:22,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399404381] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:22,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:22,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-09-16 11:27:22,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223942349] [2022-09-16 11:27:22,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:22,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-16 11:27:22,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:22,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-16 11:27:22,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2022-09-16 11:27:22,342 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:27:22,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 293 transitions, 2475 flow. Second operand has 29 states, 29 states have (on average 97.3103448275862) internal successors, (2822), 29 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:22,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:22,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:27:22,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:33,304 INFO L130 PetriNetUnfolder]: 7408/38904 cut-off events. [2022-09-16 11:27:33,304 INFO L131 PetriNetUnfolder]: For 1432058/1435750 co-relation queries the response was YES. [2022-09-16 11:27:34,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137052 conditions, 38904 events. 7408/38904 cut-off events. For 1432058/1435750 co-relation queries the response was YES. Maximal size of possible extension queue 2442. Compared 603671 event pairs, 180 based on Foata normal form. 1964/37829 useless extension candidates. Maximal degree in co-relation 136927. Up to 3773 conditions per place. [2022-09-16 11:27:34,476 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 157 selfloop transitions, 284 changer transitions 0/561 dead transitions. [2022-09-16 11:27:34,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 561 transitions, 5668 flow [2022-09-16 11:27:34,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-09-16 11:27:34,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-09-16 11:27:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5540 transitions. [2022-09-16 11:27:34,482 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8758893280632412 [2022-09-16 11:27:34,482 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5540 transitions. [2022-09-16 11:27:34,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5540 transitions. [2022-09-16 11:27:34,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:34,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5540 transitions. [2022-09-16 11:27:34,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 100.72727272727273) internal successors, (5540), 55 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 115.0) internal successors, (6440), 56 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,498 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 115.0) internal successors, (6440), 56 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,498 INFO L175 Difference]: Start difference. First operand has 269 places, 293 transitions, 2475 flow. Second operand 55 states and 5540 transitions. [2022-09-16 11:27:34,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 561 transitions, 5668 flow [2022-09-16 11:27:36,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 561 transitions, 5586 flow, removed 25 selfloop flow, removed 12 redundant places. [2022-09-16 11:27:36,109 INFO L231 Difference]: Finished difference. Result has 326 places, 441 transitions, 4969 flow [2022-09-16 11:27:36,110 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=2393, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=4969, PETRI_PLACES=326, PETRI_TRANSITIONS=441} [2022-09-16 11:27:36,110 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 213 predicate places. [2022-09-16 11:27:36,110 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 441 transitions, 4969 flow [2022-09-16 11:27:36,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 97.3103448275862) internal successors, (2822), 29 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:36,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:36,111 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-09-16 11:27:36,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:27:36,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:36,312 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:27:36,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:36,313 INFO L85 PathProgramCache]: Analyzing trace with hash -500977530, now seen corresponding path program 1 times [2022-09-16 11:27:36,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:36,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939826417] [2022-09-16 11:27:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:36,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:36,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:36,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939826417] [2022-09-16 11:27:36,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939826417] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:36,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547405261] [2022-09-16 11:27:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:36,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:36,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:36,453 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:27:36,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 11:27:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:36,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:27:36,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:36,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:36,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547405261] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:36,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:36,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-09-16 11:27:36,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493618813] [2022-09-16 11:27:36,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:36,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-16 11:27:36,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:36,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-16 11:27:36,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2022-09-16 11:27:36,923 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:27:36,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 441 transitions, 4969 flow. Second operand has 26 states, 26 states have (on average 97.34615384615384) internal successors, (2531), 26 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:36,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:36,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:27:36,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:00,158 INFO L130 PetriNetUnfolder]: 12933/71744 cut-off events. [2022-09-16 11:28:00,160 INFO L131 PetriNetUnfolder]: For 4069239/4074489 co-relation queries the response was YES. [2022-09-16 11:28:03,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274442 conditions, 71744 events. 12933/71744 cut-off events. For 4069239/4074489 co-relation queries the response was YES. Maximal size of possible extension queue 4785. Compared 1226422 event pairs, 225 based on Foata normal form. 2835/68924 useless extension candidates. Maximal degree in co-relation 274304. Up to 7441 conditions per place. [2022-09-16 11:28:03,611 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 247 selfloop transitions, 515 changer transitions 0/882 dead transitions. [2022-09-16 11:28:03,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 882 transitions, 12453 flow [2022-09-16 11:28:03,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-09-16 11:28:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-09-16 11:28:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 5841 transitions. [2022-09-16 11:28:03,624 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.875712143928036 [2022-09-16 11:28:03,625 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 5841 transitions. [2022-09-16 11:28:03,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 5841 transitions. [2022-09-16 11:28:03,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:03,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 5841 transitions. [2022-09-16 11:28:03,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 100.70689655172414) internal successors, (5841), 58 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:03,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 115.0) internal successors, (6785), 59 states have internal predecessors, (6785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:03,679 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 115.0) internal successors, (6785), 59 states have internal predecessors, (6785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:03,679 INFO L175 Difference]: Start difference. First operand has 326 places, 441 transitions, 4969 flow. Second operand 58 states and 5841 transitions. [2022-09-16 11:28:03,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 882 transitions, 12453 flow [2022-09-16 11:28:11,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 882 transitions, 11780 flow, removed 298 selfloop flow, removed 23 redundant places. [2022-09-16 11:28:11,517 INFO L231 Difference]: Finished difference. Result has 382 places, 760 transitions, 11011 flow [2022-09-16 11:28:11,518 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=4619, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=11011, PETRI_PLACES=382, PETRI_TRANSITIONS=760} [2022-09-16 11:28:11,519 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 269 predicate places. [2022-09-16 11:28:11,519 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 760 transitions, 11011 flow [2022-09-16 11:28:11,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 97.34615384615384) internal successors, (2531), 26 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:11,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:11,520 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 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] [2022-09-16 11:28:11,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-09-16 11:28:11,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:11,746 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:28:11,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:11,746 INFO L85 PathProgramCache]: Analyzing trace with hash 769685556, now seen corresponding path program 2 times [2022-09-16 11:28:11,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:11,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497867434] [2022-09-16 11:28:11,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:11,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:11,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:11,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497867434] [2022-09-16 11:28:11,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497867434] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:11,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119289318] [2022-09-16 11:28:11,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:28:11,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:11,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:11,861 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:28:11,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 11:28:11,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:28:11,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:28:11,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:28:11,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:12,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:28:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:12,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119289318] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:28:12,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:28:12,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-09-16 11:28:12,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477027667] [2022-09-16 11:28:12,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:28:12,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-16 11:28:12,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:12,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-16 11:28:12,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812 [2022-09-16 11:28:12,347 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:28:12,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 760 transitions, 11011 flow. Second operand has 29 states, 29 states have (on average 97.3103448275862) internal successors, (2822), 29 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:12,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:12,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:28:12,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand