/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_unsafe-11.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:26:46,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:26:46,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:26:46,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:26:46,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:26:46,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:26:46,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:26:46,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:26:46,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:26:46,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:26:46,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:26:46,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:26:46,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:26:46,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:26:46,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:26:46,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:26:46,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:26:46,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:26:46,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:26:46,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:26:46,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:26:46,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:26:46,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:26:46,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:26:46,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:26:46,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:26:46,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:26:46,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:26:46,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:26:46,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:26:46,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:26:46,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:26:46,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:26:46,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:26:46,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:26:46,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:26:46,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:26:46,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:26:46,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:26:46,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:26:46,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:26:46,351 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 11:26:46,376 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:26:46,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:26:46,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:26:46,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:26:46,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:26:46,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:26:46,378 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:26:46,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:26:46,378 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:26:46,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:26:46,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:26:46,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:26:46,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:26:46,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:26:46,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:26:46,379 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:26:46,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:26:46,380 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:26:46,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:26:46,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:26:46,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:26:46,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:26:46,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:26:46,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:26:46,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:26:46,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:26:46,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:26:46,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:26:46,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:26:46,381 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:26:46,381 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:26:46,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:26:46,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:26:46,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:26:46,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:26:46,627 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:26:46,628 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:26:46,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-11.i [2022-09-16 11:26:46,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa33c77a8/f65c8a2777684f2abbc49ca8c44172d6/FLAG39491d80f [2022-09-16 11:26:47,127 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:26:47,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-11.i [2022-09-16 11:26:47,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa33c77a8/f65c8a2777684f2abbc49ca8c44172d6/FLAG39491d80f [2022-09-16 11:26:47,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa33c77a8/f65c8a2777684f2abbc49ca8c44172d6 [2022-09-16 11:26:47,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:26:47,154 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:26:47,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:26:47,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:26:47,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:26:47,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702969a1 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 11:26:47,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:26:47,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:26:47,458 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_unsafe-11.i[30813,30826] [2022-09-16 11:26:47,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:26:47,467 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:26:47,508 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_unsafe-11.i[30813,30826] [2022-09-16 11:26:47,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:26:47,536 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:26:47,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47 WrapperNode [2022-09-16 11:26:47,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:26:47,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:26:47,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:26:47,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:26:47,558 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 11:26:47,571 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 11:26:47,590 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-09-16 11:26:47,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:26:47,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:26:47,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:26:47,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:26:47,605 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 11:26:47,605 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 11:26:47,607 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 11:26:47,607 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 11:26:47,622 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 11:26:47,625 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 11:26:47,626 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 11:26:47,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:26:47,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:26:47,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:26:47,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:26:47,630 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 11:26:47,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:26:47,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:47,667 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 11:26:47,670 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 11:26:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-09-16 11:26:47,701 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-09-16 11:26:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-09-16 11:26:47,701 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-09-16 11:26:47,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:26:47,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:26:47,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:26:47,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:26:47,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:26:47,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:26:47,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:26:47,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:26:47,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:26:47,705 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 11:26:47,790 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:26:47,792 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:26:47,959 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:26:47,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:26:47,993 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:26:47,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:26:47 BoogieIcfgContainer [2022-09-16 11:26:47,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:26:47,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:26:47,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:26:48,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:26:48,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:26:47" (1/3) ... [2022-09-16 11:26:48,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff2240c 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 11:26:48,003 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 11:26:48,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff2240c 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 11:26:48,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:26:47" (3/3) ... [2022-09-16 11:26:48,005 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-11.i [2022-09-16 11:26:48,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:26:48,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-09-16 11:26:48,022 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:26:48,107 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-16 11:26:48,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 240 flow [2022-09-16 11:26:48,203 INFO L130 PetriNetUnfolder]: 7/113 cut-off events. [2022-09-16 11:26:48,204 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:26:48,208 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 11:26:48,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 115 transitions, 240 flow [2022-09-16 11:26:48,215 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 113 transitions, 232 flow [2022-09-16 11:26:48,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:26:48,229 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;@75a40961, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:26:48,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-09-16 11:26:48,237 INFO L130 PetriNetUnfolder]: 1/41 cut-off events. [2022-09-16 11:26:48,237 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:26:48,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:48,238 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 11:26:48,238 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 11:26:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:48,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2090278822, now seen corresponding path program 1 times [2022-09-16 11:26:48,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:48,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438188900] [2022-09-16 11:26:48,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:48,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:48,498 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 11:26:48,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:48,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438188900] [2022-09-16 11:26:48,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438188900] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:48,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:48,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:48,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8417783] [2022-09-16 11:26:48,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:48,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:48,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:48,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:48,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:48,529 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:48,532 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 11:26:48,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:48,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:48,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:48,644 INFO L130 PetriNetUnfolder]: 131/521 cut-off events. [2022-09-16 11:26:48,644 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-09-16 11:26:48,647 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 11:26:48,651 INFO L137 encePairwiseOnDemand]: 103/115 looper letters, 22 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2022-09-16 11:26:48,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 305 flow [2022-09-16 11:26:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:26:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:26:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2022-09-16 11:26:48,663 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9282608695652174 [2022-09-16 11:26:48,671 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 427 transitions. [2022-09-16 11:26:48,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 427 transitions. [2022-09-16 11:26:48,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:48,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 427 transitions. [2022-09-16 11:26:48,679 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 11:26:48,683 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 11:26:48,684 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 11:26:48,685 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 232 flow. Second operand 4 states and 427 transitions. [2022-09-16 11:26:48,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 305 flow [2022-09-16 11:26:48,688 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 11:26:48,690 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 251 flow [2022-09-16 11:26:48,696 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 11:26:48,700 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 1 predicate places. [2022-09-16 11:26:48,701 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 251 flow [2022-09-16 11:26:48,702 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 11:26:48,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:48,702 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 11:26:48,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:26:48,703 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 11:26:48,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1286757501, now seen corresponding path program 1 times [2022-09-16 11:26:48,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:48,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272337073] [2022-09-16 11:26:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:48,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:48,833 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 11:26:48,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:48,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272337073] [2022-09-16 11:26:48,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272337073] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:48,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:48,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:48,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061360162] [2022-09-16 11:26:48,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:48,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:48,854 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:48,854 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 11:26:48,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:48,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:48,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:49,042 INFO L130 PetriNetUnfolder]: 109/309 cut-off events. [2022-09-16 11:26:49,043 INFO L131 PetriNetUnfolder]: For 40/59 co-relation queries the response was YES. [2022-09-16 11:26:49,058 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 11:26:49,061 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 32 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2022-09-16 11:26:49,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 127 transitions, 375 flow [2022-09-16 11:26:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 502 transitions. [2022-09-16 11:26:49,065 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8730434782608696 [2022-09-16 11:26:49,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 502 transitions. [2022-09-16 11:26:49,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 502 transitions. [2022-09-16 11:26:49,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:49,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 502 transitions. [2022-09-16 11:26:49,066 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 11:26:49,069 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 11:26:49,069 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 11:26:49,069 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 251 flow. Second operand 5 states and 502 transitions. [2022-09-16 11:26:49,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 127 transitions, 375 flow [2022-09-16 11:26:49,070 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 11:26:49,072 INFO L231 Difference]: Finished difference. Result has 121 places, 114 transitions, 283 flow [2022-09-16 11:26:49,072 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 11:26:49,073 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 8 predicate places. [2022-09-16 11:26:49,073 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 114 transitions, 283 flow [2022-09-16 11:26:49,073 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 11:26:49,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:49,073 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 11:26:49,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:26:49,073 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 11:26:49,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:49,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1214232894, now seen corresponding path program 1 times [2022-09-16 11:26:49,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:49,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578085687] [2022-09-16 11:26:49,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:49,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:49,254 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 11:26:49,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:49,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578085687] [2022-09-16 11:26:49,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578085687] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:49,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031157941] [2022-09-16 11:26:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:49,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:49,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:49,258 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 11:26:49,259 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 11:26:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:49,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:49,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:49,568 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 11:26:49,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:26:49,635 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 11:26:49,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031157941] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:26:49,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:26:49,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-09-16 11:26:49,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186586054] [2022-09-16 11:26:49,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:26:49,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:26:49,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:49,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:26:49,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:26:49,639 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:49,640 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 11:26:49,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:49,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:49,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:50,024 INFO L130 PetriNetUnfolder]: 381/1587 cut-off events. [2022-09-16 11:26:50,024 INFO L131 PetriNetUnfolder]: For 233/254 co-relation queries the response was YES. [2022-09-16 11:26:50,033 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 11:26:50,043 INFO L137 encePairwiseOnDemand]: 105/115 looper letters, 65 selfloop transitions, 41 changer transitions 0/203 dead transitions. [2022-09-16 11:26:50,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 203 transitions, 787 flow [2022-09-16 11:26:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:26:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:26:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1853 transitions. [2022-09-16 11:26:50,051 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8951690821256039 [2022-09-16 11:26:50,051 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1853 transitions. [2022-09-16 11:26:50,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1853 transitions. [2022-09-16 11:26:50,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:50,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1853 transitions. [2022-09-16 11:26:50,056 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 11:26:50,063 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 11:26:50,064 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 11:26:50,064 INFO L175 Difference]: Start difference. First operand has 121 places, 114 transitions, 283 flow. Second operand 18 states and 1853 transitions. [2022-09-16 11:26:50,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 203 transitions, 787 flow [2022-09-16 11:26:50,070 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 11:26:50,074 INFO L231 Difference]: Finished difference. Result has 152 places, 155 transitions, 675 flow [2022-09-16 11:26:50,074 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 11:26:50,076 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 39 predicate places. [2022-09-16 11:26:50,076 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 155 transitions, 675 flow [2022-09-16 11:26:50,077 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 11:26:50,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:50,077 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 11:26:50,097 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 11:26:50,294 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 11:26:50,295 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 11:26:50,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:50,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1214232893, now seen corresponding path program 1 times [2022-09-16 11:26:50,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:50,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813309918] [2022-09-16 11:26:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:50,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:50,382 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 11:26:50,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:50,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813309918] [2022-09-16 11:26:50,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813309918] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:50,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520291223] [2022-09-16 11:26:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:50,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:50,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:50,385 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 11:26:50,387 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 11:26:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:50,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:50,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:50,509 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 11:26:50,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:50,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520291223] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:50,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:50,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-09-16 11:26:50,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107163452] [2022-09-16 11:26:50,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:50,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:26:50,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:50,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:26:50,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:26:50,511 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:50,512 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 11:26:50,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:50,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:50,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:50,650 INFO L130 PetriNetUnfolder]: 176/898 cut-off events. [2022-09-16 11:26:50,650 INFO L131 PetriNetUnfolder]: For 4689/4899 co-relation queries the response was YES. [2022-09-16 11:26:50,658 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 11:26:50,664 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 25 selfloop transitions, 14 changer transitions 0/136 dead transitions. [2022-09-16 11:26:50,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 136 transitions, 614 flow [2022-09-16 11:26:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:50,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2022-09-16 11:26:50,666 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8747826086956522 [2022-09-16 11:26:50,666 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2022-09-16 11:26:50,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2022-09-16 11:26:50,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:50,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2022-09-16 11:26:50,667 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 11:26:50,668 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 11:26:50,668 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 11:26:50,668 INFO L175 Difference]: Start difference. First operand has 152 places, 155 transitions, 675 flow. Second operand 5 states and 503 transitions. [2022-09-16 11:26:50,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 136 transitions, 614 flow [2022-09-16 11:26:50,678 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 11:26:50,681 INFO L231 Difference]: Finished difference. Result has 138 places, 131 transitions, 468 flow [2022-09-16 11:26:50,681 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 11:26:50,682 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 25 predicate places. [2022-09-16 11:26:50,682 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 131 transitions, 468 flow [2022-09-16 11:26:50,682 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 11:26:50,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:50,683 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 11:26:50,718 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 11:26:50,901 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 11:26:50,902 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 11:26:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:50,902 INFO L85 PathProgramCache]: Analyzing trace with hash -447258493, now seen corresponding path program 1 times [2022-09-16 11:26:50,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:50,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460992873] [2022-09-16 11:26:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:50,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:50,956 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 11:26:50,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:50,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460992873] [2022-09-16 11:26:50,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460992873] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:50,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:50,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:50,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360883649] [2022-09-16 11:26:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:50,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:50,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:50,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:50,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:50,960 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:50,961 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 11:26:50,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:50,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:50,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:51,082 INFO L130 PetriNetUnfolder]: 168/722 cut-off events. [2022-09-16 11:26:51,082 INFO L131 PetriNetUnfolder]: For 1848/1962 co-relation queries the response was YES. [2022-09-16 11:26:51,092 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 11:26:51,100 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 62 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2022-09-16 11:26:51,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 160 transitions, 787 flow [2022-09-16 11:26:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:51,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2022-09-16 11:26:51,101 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8573913043478261 [2022-09-16 11:26:51,102 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2022-09-16 11:26:51,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2022-09-16 11:26:51,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:51,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2022-09-16 11:26:51,103 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 11:26:51,104 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 11:26:51,104 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 11:26:51,104 INFO L175 Difference]: Start difference. First operand has 138 places, 131 transitions, 468 flow. Second operand 5 states and 493 transitions. [2022-09-16 11:26:51,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 160 transitions, 787 flow [2022-09-16 11:26:51,107 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 11:26:51,109 INFO L231 Difference]: Finished difference. Result has 143 places, 134 transitions, 497 flow [2022-09-16 11:26:51,110 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 11:26:51,111 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 30 predicate places. [2022-09-16 11:26:51,111 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 134 transitions, 497 flow [2022-09-16 11:26:51,112 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 11:26:51,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:51,112 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 11:26:51,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:26:51,112 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 11:26:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:51,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1353304293, now seen corresponding path program 1 times [2022-09-16 11:26:51,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:51,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712395514] [2022-09-16 11:26:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,150 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 11:26:51,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:51,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712395514] [2022-09-16 11:26:51,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712395514] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:51,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:51,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:51,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620187574] [2022-09-16 11:26:51,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:51,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:51,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:51,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:51,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:51,156 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:51,156 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 11:26:51,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:51,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:51,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:51,364 INFO L130 PetriNetUnfolder]: 189/682 cut-off events. [2022-09-16 11:26:51,364 INFO L131 PetriNetUnfolder]: For 1854/2009 co-relation queries the response was YES. [2022-09-16 11:26:51,373 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 11:26:51,392 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 59 selfloop transitions, 8 changer transitions 0/161 dead transitions. [2022-09-16 11:26:51,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 161 transitions, 845 flow [2022-09-16 11:26:51,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2022-09-16 11:26:51,394 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8469565217391304 [2022-09-16 11:26:51,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2022-09-16 11:26:51,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2022-09-16 11:26:51,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:51,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2022-09-16 11:26:51,395 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 11:26:51,396 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 11:26:51,396 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 11:26:51,396 INFO L175 Difference]: Start difference. First operand has 143 places, 134 transitions, 497 flow. Second operand 5 states and 487 transitions. [2022-09-16 11:26:51,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 161 transitions, 845 flow [2022-09-16 11:26:51,414 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 11:26:51,416 INFO L231 Difference]: Finished difference. Result has 146 places, 134 transitions, 515 flow [2022-09-16 11:26:51,417 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 11:26:51,419 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 33 predicate places. [2022-09-16 11:26:51,419 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 134 transitions, 515 flow [2022-09-16 11:26:51,419 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 11:26:51,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:51,421 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 11:26:51,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:26:51,422 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 11:26:51,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:51,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2117796030, now seen corresponding path program 1 times [2022-09-16 11:26:51,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:51,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158850915] [2022-09-16 11:26:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,521 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 11:26:51,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:51,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158850915] [2022-09-16 11:26:51,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158850915] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:51,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:51,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:51,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275684561] [2022-09-16 11:26:51,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:51,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:51,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:51,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:51,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:51,523 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 115 [2022-09-16 11:26:51,523 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 11:26:51,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:51,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 115 [2022-09-16 11:26:51,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:51,854 INFO L130 PetriNetUnfolder]: 713/2548 cut-off events. [2022-09-16 11:26:51,854 INFO L131 PetriNetUnfolder]: For 6530/6901 co-relation queries the response was YES. [2022-09-16 11:26:51,871 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 11:26:51,892 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 86 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2022-09-16 11:26:51,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 188 transitions, 1075 flow [2022-09-16 11:26:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:26:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:26:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2022-09-16 11:26:51,893 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8739130434782608 [2022-09-16 11:26:51,894 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2022-09-16 11:26:51,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2022-09-16 11:26:51,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:51,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2022-09-16 11:26:51,895 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 11:26:51,895 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 11:26:51,896 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 11:26:51,896 INFO L175 Difference]: Start difference. First operand has 146 places, 134 transitions, 515 flow. Second operand 4 states and 402 transitions. [2022-09-16 11:26:51,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 188 transitions, 1075 flow [2022-09-16 11:26:51,902 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 11:26:51,904 INFO L231 Difference]: Finished difference. Result has 148 places, 136 transitions, 529 flow [2022-09-16 11:26:51,905 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 11:26:51,905 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 35 predicate places. [2022-09-16 11:26:51,905 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 136 transitions, 529 flow [2022-09-16 11:26:51,905 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 11:26:51,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:51,906 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 11:26:51,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:26:51,906 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 11:26:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash -997239562, now seen corresponding path program 1 times [2022-09-16 11:26:51,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:51,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134727074] [2022-09-16 11:26:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,947 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 11:26:51,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134727074] [2022-09-16 11:26:51,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134727074] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368027360] [2022-09-16 11:26:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:51,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:51,955 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 11:26:51,968 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 11:26:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:26:52,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:52,045 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 11:26:52,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:52,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368027360] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:52,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:52,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:26:52,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775545002] [2022-09-16 11:26:52,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:52,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:26:52,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:52,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:26:52,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:26:52,047 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:52,047 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 11:26:52,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:52,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:52,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:52,234 INFO L130 PetriNetUnfolder]: 176/686 cut-off events. [2022-09-16 11:26:52,234 INFO L131 PetriNetUnfolder]: For 1808/1945 co-relation queries the response was YES. [2022-09-16 11:26:52,243 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 11:26:52,249 INFO L137 encePairwiseOnDemand]: 110/115 looper letters, 62 selfloop transitions, 6 changer transitions 0/164 dead transitions. [2022-09-16 11:26:52,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 164 transitions, 873 flow [2022-09-16 11:26:52,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:26:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:26:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 680 transitions. [2022-09-16 11:26:52,251 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.84472049689441 [2022-09-16 11:26:52,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 680 transitions. [2022-09-16 11:26:52,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 680 transitions. [2022-09-16 11:26:52,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:52,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 680 transitions. [2022-09-16 11:26:52,253 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 11:26:52,254 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 11:26:52,254 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 11:26:52,254 INFO L175 Difference]: Start difference. First operand has 148 places, 136 transitions, 529 flow. Second operand 7 states and 680 transitions. [2022-09-16 11:26:52,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 164 transitions, 873 flow [2022-09-16 11:26:52,258 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 11:26:52,260 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 535 flow [2022-09-16 11:26:52,260 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 11:26:52,261 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 39 predicate places. [2022-09-16 11:26:52,261 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 535 flow [2022-09-16 11:26:52,261 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 11:26:52,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:52,261 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 11:26:52,297 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 11:26:52,477 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 11:26:52,477 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 11:26:52,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:52,478 INFO L85 PathProgramCache]: Analyzing trace with hash 966995920, now seen corresponding path program 1 times [2022-09-16 11:26:52,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:52,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931070992] [2022-09-16 11:26:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:52,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,503 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 11:26:52,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:52,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931070992] [2022-09-16 11:26:52,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931070992] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:52,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:52,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:52,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345146972] [2022-09-16 11:26:52,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:52,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:52,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:52,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:52,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:52,505 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:52,505 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 11:26:52,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:52,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:52,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:52,607 INFO L130 PetriNetUnfolder]: 155/627 cut-off events. [2022-09-16 11:26:52,607 INFO L131 PetriNetUnfolder]: For 1733/1846 co-relation queries the response was YES. [2022-09-16 11:26:52,619 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 11:26:52,626 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 59 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2022-09-16 11:26:52,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 162 transitions, 874 flow [2022-09-16 11:26:52,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:52,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 484 transitions. [2022-09-16 11:26:52,628 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8417391304347827 [2022-09-16 11:26:52,628 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 484 transitions. [2022-09-16 11:26:52,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 484 transitions. [2022-09-16 11:26:52,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:52,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 484 transitions. [2022-09-16 11:26:52,629 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 11:26:52,630 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 11:26:52,630 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 11:26:52,630 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 535 flow. Second operand 5 states and 484 transitions. [2022-09-16 11:26:52,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 162 transitions, 874 flow [2022-09-16 11:26:52,634 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 11:26:52,636 INFO L231 Difference]: Finished difference. Result has 151 places, 135 transitions, 544 flow [2022-09-16 11:26:52,636 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 11:26:52,636 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 38 predicate places. [2022-09-16 11:26:52,637 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 135 transitions, 544 flow [2022-09-16 11:26:52,637 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 11:26:52,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:52,637 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 11:26:52,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:26:52,637 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 11:26:52,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:52,638 INFO L85 PathProgramCache]: Analyzing trace with hash -87897220, now seen corresponding path program 1 times [2022-09-16 11:26:52,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:52,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554428815] [2022-09-16 11:26:52,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:52,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,676 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 11:26:52,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:52,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554428815] [2022-09-16 11:26:52,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554428815] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:52,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166073120] [2022-09-16 11:26:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:52,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:52,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:52,678 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 11:26:52,680 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 11:26:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:52,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:52,792 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 11:26:52,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:52,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166073120] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:52,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:52,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-09-16 11:26:52,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746054835] [2022-09-16 11:26:52,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:52,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:26:52,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:52,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:26:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:26:52,794 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:52,794 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 11:26:52,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:52,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:52,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:52,892 INFO L130 PetriNetUnfolder]: 148/621 cut-off events. [2022-09-16 11:26:52,893 INFO L131 PetriNetUnfolder]: For 1731/1863 co-relation queries the response was YES. [2022-09-16 11:26:52,903 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 11:26:52,920 INFO L137 encePairwiseOnDemand]: 111/115 looper letters, 43 selfloop transitions, 5 changer transitions 0/143 dead transitions. [2022-09-16 11:26:52,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 143 transitions, 705 flow [2022-09-16 11:26:52,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:26:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:26:52,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2022-09-16 11:26:52,922 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.841304347826087 [2022-09-16 11:26:52,922 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2022-09-16 11:26:52,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2022-09-16 11:26:52,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:52,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2022-09-16 11:26:52,923 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 11:26:52,923 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 11:26:52,924 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 11:26:52,924 INFO L175 Difference]: Start difference. First operand has 151 places, 135 transitions, 544 flow. Second operand 4 states and 387 transitions. [2022-09-16 11:26:52,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 143 transitions, 705 flow [2022-09-16 11:26:52,926 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 11:26:52,928 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 538 flow [2022-09-16 11:26:52,929 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 11:26:52,929 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 37 predicate places. [2022-09-16 11:26:52,929 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 538 flow [2022-09-16 11:26:52,929 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 11:26:52,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:52,930 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 11:26:52,961 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 11:26:53,143 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 11:26:53,143 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 11:26:53,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:53,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1641089002, now seen corresponding path program 1 times [2022-09-16 11:26:53,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:53,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591518349] [2022-09-16 11:26:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:53,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:53,180 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 11:26:53,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:53,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591518349] [2022-09-16 11:26:53,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591518349] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:53,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:53,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:53,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499669297] [2022-09-16 11:26:53,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:53,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:53,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:53,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:53,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:53,182 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-09-16 11:26:53,183 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 11:26:53,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:53,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-09-16 11:26:53,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:53,480 INFO L130 PetriNetUnfolder]: 844/2484 cut-off events. [2022-09-16 11:26:53,480 INFO L131 PetriNetUnfolder]: For 6940/7316 co-relation queries the response was YES. [2022-09-16 11:26:53,499 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 11:26:53,511 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 112 selfloop transitions, 4 changer transitions 0/212 dead transitions. [2022-09-16 11:26:53,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 212 transitions, 1334 flow [2022-09-16 11:26:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:53,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2022-09-16 11:26:53,585 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8539130434782609 [2022-09-16 11:26:53,585 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2022-09-16 11:26:53,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2022-09-16 11:26:53,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:53,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2022-09-16 11:26:53,586 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 11:26:53,587 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 11:26:53,588 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 11:26:53,588 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 538 flow. Second operand 5 states and 491 transitions. [2022-09-16 11:26:53,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 212 transitions, 1334 flow [2022-09-16 11:26:53,594 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 11:26:53,596 INFO L231 Difference]: Finished difference. Result has 154 places, 137 transitions, 560 flow [2022-09-16 11:26:53,596 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 11:26:53,596 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 41 predicate places. [2022-09-16 11:26:53,596 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 137 transitions, 560 flow [2022-09-16 11:26:53,596 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 11:26:53,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:53,597 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 11:26:53,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:26:53,597 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 11:26:53,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1948310297, now seen corresponding path program 1 times [2022-09-16 11:26:53,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:53,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090546418] [2022-09-16 11:26:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:53,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:53,682 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 11:26:53,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:53,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090546418] [2022-09-16 11:26:53,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090546418] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:53,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381575717] [2022-09-16 11:26:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:53,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:53,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:53,693 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 11:26:53,739 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 11:26:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:53,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:26:53,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:53,925 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 11:26:53,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:26:54,043 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 11:26:54,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381575717] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:26:54,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:26:54,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-09-16 11:26:54,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665079120] [2022-09-16 11:26:54,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:26:54,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:26:54,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:26:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:26:54,046 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:54,048 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 11:26:54,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:54,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:54,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:54,835 INFO L130 PetriNetUnfolder]: 1218/4083 cut-off events. [2022-09-16 11:26:54,836 INFO L131 PetriNetUnfolder]: For 9443/9990 co-relation queries the response was YES. [2022-09-16 11:26:54,881 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 11:26:54,908 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 211 selfloop transitions, 11 changer transitions 0/320 dead transitions. [2022-09-16 11:26:54,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 320 transitions, 2330 flow [2022-09-16 11:26:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:26:54,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:26:54,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1071 transitions. [2022-09-16 11:26:54,911 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8466403162055336 [2022-09-16 11:26:54,911 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1071 transitions. [2022-09-16 11:26:54,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1071 transitions. [2022-09-16 11:26:54,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:54,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1071 transitions. [2022-09-16 11:26:54,915 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 11:26:54,917 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 11:26:54,917 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 11:26:54,917 INFO L175 Difference]: Start difference. First operand has 154 places, 137 transitions, 560 flow. Second operand 11 states and 1071 transitions. [2022-09-16 11:26:54,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 320 transitions, 2330 flow [2022-09-16 11:26:54,928 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 11:26:54,931 INFO L231 Difference]: Finished difference. Result has 167 places, 142 transitions, 615 flow [2022-09-16 11:26:54,931 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 11:26:54,932 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 54 predicate places. [2022-09-16 11:26:54,932 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 142 transitions, 615 flow [2022-09-16 11:26:54,932 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 11:26:54,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:54,932 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 11:26:54,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-16 11:26:55,147 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 11:26:55,148 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 11:26:55,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:55,148 INFO L85 PathProgramCache]: Analyzing trace with hash 268077310, now seen corresponding path program 1 times [2022-09-16 11:26:55,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:55,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710041097] [2022-09-16 11:26:55,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:55,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:55,209 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 11:26:55,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:55,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710041097] [2022-09-16 11:26:55,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710041097] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:55,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070146899] [2022-09-16 11:26:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:55,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:55,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:55,210 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 11:26:55,212 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 11:26:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:55,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:26:55,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:55,423 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 11:26:55,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:55,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070146899] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:55,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:55,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-09-16 11:26:55,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337025634] [2022-09-16 11:26:55,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:55,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:26:55,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:55,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:26:55,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:26:55,424 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:55,425 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 11:26:55,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:55,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:55,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:55,991 INFO L130 PetriNetUnfolder]: 1071/3807 cut-off events. [2022-09-16 11:26:55,991 INFO L131 PetriNetUnfolder]: For 8653/9131 co-relation queries the response was YES. [2022-09-16 11:26:56,033 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 11:26:56,059 INFO L137 encePairwiseOnDemand]: 110/115 looper letters, 90 selfloop transitions, 4 changer transitions 0/192 dead transitions. [2022-09-16 11:26:56,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 192 transitions, 1179 flow [2022-09-16 11:26:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:26:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:26:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 581 transitions. [2022-09-16 11:26:56,062 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8420289855072464 [2022-09-16 11:26:56,062 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 581 transitions. [2022-09-16 11:26:56,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 581 transitions. [2022-09-16 11:26:56,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:56,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 581 transitions. [2022-09-16 11:26:56,063 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 11:26:56,065 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 11:26:56,065 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 11:26:56,065 INFO L175 Difference]: Start difference. First operand has 167 places, 142 transitions, 615 flow. Second operand 6 states and 581 transitions. [2022-09-16 11:26:56,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 192 transitions, 1179 flow [2022-09-16 11:26:56,079 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 11:26:56,082 INFO L231 Difference]: Finished difference. Result has 168 places, 142 transitions, 613 flow [2022-09-16 11:26:56,082 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 11:26:56,083 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 55 predicate places. [2022-09-16 11:26:56,083 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 142 transitions, 613 flow [2022-09-16 11:26:56,084 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 11:26:56,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:56,084 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 11:26:56,126 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 11:26:56,308 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 11:26:56,308 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 11:26:56,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:56,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1142354715, now seen corresponding path program 1 times [2022-09-16 11:26:56,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:56,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172934280] [2022-09-16 11:26:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:56,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:56,384 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 11:26:56,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:56,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172934280] [2022-09-16 11:26:56,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172934280] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:56,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690382332] [2022-09-16 11:26:56,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:56,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:56,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:56,387 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 11:26:56,388 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 11:26:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:56,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:26:56,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:56,614 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 11:26:56,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:26:56,716 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 11:26:56,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690382332] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:26:56,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:26:56,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-09-16 11:26:56,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661788867] [2022-09-16 11:26:56,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:26:56,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:26:56,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:56,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:26:56,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:26:56,719 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:56,721 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 11:26:56,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:56,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:56,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:58,013 INFO L130 PetriNetUnfolder]: 1030/4727 cut-off events. [2022-09-16 11:26:58,014 INFO L131 PetriNetUnfolder]: For 21394/22087 co-relation queries the response was YES. [2022-09-16 11:26:58,068 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 11:26:58,096 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 74 selfloop transitions, 58 changer transitions 0/240 dead transitions. [2022-09-16 11:26:58,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 240 transitions, 1431 flow [2022-09-16 11:26:58,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-09-16 11:26:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-09-16 11:26:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2733 transitions. [2022-09-16 11:26:58,103 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8801932367149758 [2022-09-16 11:26:58,104 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2733 transitions. [2022-09-16 11:26:58,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2733 transitions. [2022-09-16 11:26:58,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:58,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2733 transitions. [2022-09-16 11:26:58,113 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 11:26:58,120 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 11:26:58,121 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 11:26:58,121 INFO L175 Difference]: Start difference. First operand has 168 places, 142 transitions, 613 flow. Second operand 27 states and 2733 transitions. [2022-09-16 11:26:58,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 240 transitions, 1431 flow [2022-09-16 11:26:58,147 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 11:26:58,150 INFO L231 Difference]: Finished difference. Result has 204 places, 178 transitions, 1146 flow [2022-09-16 11:26:58,151 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 11:26:58,151 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 91 predicate places. [2022-09-16 11:26:58,151 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 178 transitions, 1146 flow [2022-09-16 11:26:58,152 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 11:26:58,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:58,152 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 11:26:58,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-09-16 11:26:58,367 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 11:26:58,367 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 11:26:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1331666383, now seen corresponding path program 1 times [2022-09-16 11:26:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:58,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577370642] [2022-09-16 11:26:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:58,485 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 11:26:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:58,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577370642] [2022-09-16 11:26:58,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577370642] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:58,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:58,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:58,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838061619] [2022-09-16 11:26:58,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:58,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:58,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:58,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:58,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:58,487 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-09-16 11:26:58,488 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 11:26:58,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:58,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-09-16 11:26:58,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:00,636 INFO L130 PetriNetUnfolder]: 2877/9793 cut-off events. [2022-09-16 11:27:00,636 INFO L131 PetriNetUnfolder]: For 72013/74302 co-relation queries the response was YES. [2022-09-16 11:27:00,759 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 11:27:00,835 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 241 selfloop transitions, 8 changer transitions 0/352 dead transitions. [2022-09-16 11:27:00,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 352 transitions, 3520 flow [2022-09-16 11:27:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:27:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:27:00,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 483 transitions. [2022-09-16 11:27:00,837 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.84 [2022-09-16 11:27:00,837 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 483 transitions. [2022-09-16 11:27:00,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 483 transitions. [2022-09-16 11:27:00,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:00,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 483 transitions. [2022-09-16 11:27:00,838 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 11:27:00,840 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 11:27:00,840 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 11:27:00,840 INFO L175 Difference]: Start difference. First operand has 204 places, 178 transitions, 1146 flow. Second operand 5 states and 483 transitions. [2022-09-16 11:27:00,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 352 transitions, 3520 flow [2022-09-16 11:27:00,959 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 11:27:00,963 INFO L231 Difference]: Finished difference. Result has 200 places, 178 transitions, 1025 flow [2022-09-16 11:27:00,964 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 11:27:00,964 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 87 predicate places. [2022-09-16 11:27:00,964 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 178 transitions, 1025 flow [2022-09-16 11:27:00,965 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 11:27:00,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:00,965 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 11:27:00,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:27:00,965 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 11:27:00,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:00,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1668015338, now seen corresponding path program 1 times [2022-09-16 11:27:00,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:00,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292664216] [2022-09-16 11:27:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:00,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:01,029 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 11:27:01,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:01,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292664216] [2022-09-16 11:27:01,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292664216] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:01,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690743506] [2022-09-16 11:27:01,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:01,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:01,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:01,032 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 11:27:01,034 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 11:27:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:01,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:27:01,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:01,137 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 11:27:01,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:27:01,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690743506] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:01,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:27:01,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-09-16 11:27:01,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506993987] [2022-09-16 11:27:01,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:01,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:27:01,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:01,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:27:01,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:27:01,139 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-09-16 11:27:01,140 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 11:27:01,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:01,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-09-16 11:27:01,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:02,999 INFO L130 PetriNetUnfolder]: 2705/9377 cut-off events. [2022-09-16 11:27:03,000 INFO L131 PetriNetUnfolder]: For 72399/73762 co-relation queries the response was YES. [2022-09-16 11:27:03,108 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 11:27:03,176 INFO L137 encePairwiseOnDemand]: 111/115 looper letters, 127 selfloop transitions, 5 changer transitions 0/235 dead transitions. [2022-09-16 11:27:03,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 235 transitions, 1809 flow [2022-09-16 11:27:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:27:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:27:03,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2022-09-16 11:27:03,178 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8369565217391305 [2022-09-16 11:27:03,178 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2022-09-16 11:27:03,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2022-09-16 11:27:03,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:03,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2022-09-16 11:27:03,179 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 11:27:03,179 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 11:27:03,180 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 11:27:03,180 INFO L175 Difference]: Start difference. First operand has 200 places, 178 transitions, 1025 flow. Second operand 4 states and 385 transitions. [2022-09-16 11:27:03,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 235 transitions, 1809 flow [2022-09-16 11:27:03,255 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 11:27:03,258 INFO L231 Difference]: Finished difference. Result has 198 places, 177 transitions, 1012 flow [2022-09-16 11:27:03,258 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 11:27:03,258 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 85 predicate places. [2022-09-16 11:27:03,259 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 177 transitions, 1012 flow [2022-09-16 11:27:03,259 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 11:27:03,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:03,259 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 11:27:03,293 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 11:27:03,494 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 11:27:03,494 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 11:27:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:03,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2062810811, now seen corresponding path program 1 times [2022-09-16 11:27:03,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:03,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789977136] [2022-09-16 11:27:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:03,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:03,573 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 11:27:03,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:03,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789977136] [2022-09-16 11:27:03,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789977136] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:03,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486933824] [2022-09-16 11:27:03,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:03,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:03,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:03,580 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 11:27:03,581 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 11:27:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:03,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:27:03,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:03,798 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 11:27:03,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:03,926 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 11:27:03,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486933824] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:03,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:03,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-09-16 11:27:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977902228] [2022-09-16 11:27:03,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:03,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:27:03,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:27:03,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:27:03,929 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:27:03,931 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 11:27:03,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:03,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:27:03,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:06,872 INFO L130 PetriNetUnfolder]: 1927/9926 cut-off events. [2022-09-16 11:27:06,872 INFO L131 PetriNetUnfolder]: For 181103/182087 co-relation queries the response was YES. [2022-09-16 11:27:07,023 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 11:27:07,081 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 109 selfloop transitions, 157 changer transitions 0/373 dead transitions. [2022-09-16 11:27:07,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 373 transitions, 2950 flow [2022-09-16 11:27:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-09-16 11:27:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-09-16 11:27:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4549 transitions. [2022-09-16 11:27:07,088 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8790338164251208 [2022-09-16 11:27:07,088 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4549 transitions. [2022-09-16 11:27:07,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4549 transitions. [2022-09-16 11:27:07,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:07,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4549 transitions. [2022-09-16 11:27:07,099 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 11:27:07,106 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 11:27:07,107 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 11:27:07,108 INFO L175 Difference]: Start difference. First operand has 198 places, 177 transitions, 1012 flow. Second operand 45 states and 4549 transitions. [2022-09-16 11:27:07,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 373 transitions, 2950 flow [2022-09-16 11:27:07,255 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 11:27:07,278 INFO L231 Difference]: Finished difference. Result has 257 places, 280 transitions, 2573 flow [2022-09-16 11:27:07,278 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 11:27:07,279 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 144 predicate places. [2022-09-16 11:27:07,279 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 280 transitions, 2573 flow [2022-09-16 11:27:07,280 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 11:27:07,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:07,280 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 11:27:07,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:27:07,512 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 11:27:07,513 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 11:27:07,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:07,513 INFO L85 PathProgramCache]: Analyzing trace with hash 945577465, now seen corresponding path program 2 times [2022-09-16 11:27:07,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:07,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621850492] [2022-09-16 11:27:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:07,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:07,802 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 11:27:07,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:07,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621850492] [2022-09-16 11:27:07,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621850492] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:07,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042898157] [2022-09-16 11:27:07,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:27:07,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:07,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:07,820 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 11:27:07,827 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 11:27:07,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:27:07,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:27:07,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:27:07,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:08,236 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 11:27:08,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:08,468 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 11:27:08,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042898157] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:08,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:08,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-09-16 11:27:08,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530587201] [2022-09-16 11:27:08,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:08,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-09-16 11:27:08,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:08,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-09-16 11:27:08,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2022-09-16 11:27:08,473 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:27:08,475 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 11:27:08,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:08,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:27:08,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:20,939 INFO L130 PetriNetUnfolder]: 11112/40437 cut-off events. [2022-09-16 11:27:20,939 INFO L131 PetriNetUnfolder]: For 291174/296768 co-relation queries the response was YES. [2022-09-16 11:27:22,239 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 11:27:22,544 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 3288 selfloop transitions, 23 changer transitions 0/3408 dead transitions. [2022-09-16 11:27:22,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 3408 transitions, 47553 flow [2022-09-16 11:27:22,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-09-16 11:27:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-09-16 11:27:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2234 transitions. [2022-09-16 11:27:22,547 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8446124763705104 [2022-09-16 11:27:22,547 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2234 transitions. [2022-09-16 11:27:22,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2234 transitions. [2022-09-16 11:27:22,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:22,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2234 transitions. [2022-09-16 11:27:22,550 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 11:27:22,553 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 11:27:22,554 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 11:27:22,554 INFO L175 Difference]: Start difference. First operand has 257 places, 280 transitions, 2573 flow. Second operand 23 states and 2234 transitions. [2022-09-16 11:27:22,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 3408 transitions, 47553 flow [2022-09-16 11:27:23,209 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 11:27:23,240 INFO L231 Difference]: Finished difference. Result has 269 places, 293 transitions, 2475 flow [2022-09-16 11:27:23,240 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 11:27:23,241 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 156 predicate places. [2022-09-16 11:27:23,241 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 293 transitions, 2475 flow [2022-09-16 11:27:23,242 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 11:27:23,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:23,242 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 11:27:23,266 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 11:27:23,455 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 11:27:23,456 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 11:27:23,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:23,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1359729348, now seen corresponding path program 2 times [2022-09-16 11:27:23,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:23,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603269157] [2022-09-16 11:27:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:23,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:23,615 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 11:27:23,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603269157] [2022-09-16 11:27:23,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603269157] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716318792] [2022-09-16 11:27:23,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:27:23,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:23,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:23,617 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 11:27:23,619 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 11:27:23,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:27:23,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:27:23,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:27:23,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:23,952 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 11:27:23,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:24,158 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 11:27:24,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716318792] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:24,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:24,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-09-16 11:27:24,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373597927] [2022-09-16 11:27:24,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:24,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-16 11:27:24,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:24,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-16 11:27:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2022-09-16 11:27:24,162 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:27:24,163 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 11:27:24,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:24,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:27:24,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:36,790 INFO L130 PetriNetUnfolder]: 7408/38904 cut-off events. [2022-09-16 11:27:36,791 INFO L131 PetriNetUnfolder]: For 1432058/1435750 co-relation queries the response was YES. [2022-09-16 11:27:38,266 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 11:27:38,499 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 157 selfloop transitions, 284 changer transitions 0/561 dead transitions. [2022-09-16 11:27:38,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 561 transitions, 5668 flow [2022-09-16 11:27:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-09-16 11:27:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-09-16 11:27:38,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5540 transitions. [2022-09-16 11:27:38,536 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8758893280632412 [2022-09-16 11:27:38,537 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5540 transitions. [2022-09-16 11:27:38,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5540 transitions. [2022-09-16 11:27:38,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:38,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5540 transitions. [2022-09-16 11:27:38,548 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 11:27:38,556 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 11:27:38,558 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 11:27:38,558 INFO L175 Difference]: Start difference. First operand has 269 places, 293 transitions, 2475 flow. Second operand 55 states and 5540 transitions. [2022-09-16 11:27:38,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 561 transitions, 5668 flow [2022-09-16 11:27:41,022 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 11:27:41,029 INFO L231 Difference]: Finished difference. Result has 326 places, 441 transitions, 4969 flow [2022-09-16 11:27:41,029 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 11:27:41,030 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 213 predicate places. [2022-09-16 11:27:41,030 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 441 transitions, 4969 flow [2022-09-16 11:27:41,031 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 11:27:41,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:41,031 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 11:27:41,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-09-16 11:27:41,247 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 11:27:41,247 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 11:27:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:41,248 INFO L85 PathProgramCache]: Analyzing trace with hash -500977530, now seen corresponding path program 1 times [2022-09-16 11:27:41,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:41,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071011848] [2022-09-16 11:27:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:41,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:41,323 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 11:27:41,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:41,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071011848] [2022-09-16 11:27:41,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071011848] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:41,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173790201] [2022-09-16 11:27:41,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:41,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:41,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:41,325 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 11:27:41,326 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 11:27:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:41,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:27:41,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:41,602 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 11:27:41,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:41,769 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 11:27:41,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173790201] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:41,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:41,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-09-16 11:27:41,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120293795] [2022-09-16 11:27:41,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:41,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-16 11:27:41,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:41,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-16 11:27:41,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2022-09-16 11:27:41,772 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:27:41,774 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 11:27:41,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:41,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:27:41,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:06,529 INFO L130 PetriNetUnfolder]: 12933/71744 cut-off events. [2022-09-16 11:28:06,530 INFO L131 PetriNetUnfolder]: For 4069239/4074489 co-relation queries the response was YES. [2022-09-16 11:28:09,417 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 11:28:09,822 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 247 selfloop transitions, 515 changer transitions 0/882 dead transitions. [2022-09-16 11:28:09,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 882 transitions, 12453 flow [2022-09-16 11:28:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-09-16 11:28:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-09-16 11:28:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 5841 transitions. [2022-09-16 11:28:09,933 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.875712143928036 [2022-09-16 11:28:09,933 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 5841 transitions. [2022-09-16 11:28:09,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 5841 transitions. [2022-09-16 11:28:09,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:09,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 5841 transitions. [2022-09-16 11:28:09,945 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 11:28:09,954 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 11:28:09,955 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 11:28:09,955 INFO L175 Difference]: Start difference. First operand has 326 places, 441 transitions, 4969 flow. Second operand 58 states and 5841 transitions. [2022-09-16 11:28:09,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 882 transitions, 12453 flow [2022-09-16 11:28:17,688 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 11:28:17,700 INFO L231 Difference]: Finished difference. Result has 382 places, 760 transitions, 11011 flow [2022-09-16 11:28:17,700 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 11:28:17,701 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 269 predicate places. [2022-09-16 11:28:17,701 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 760 transitions, 11011 flow [2022-09-16 11:28:17,701 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 11:28:17,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:17,701 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 11:28:17,729 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 11:28:17,915 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 11:28:17,915 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 11:28:17,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:17,916 INFO L85 PathProgramCache]: Analyzing trace with hash 769685556, now seen corresponding path program 2 times [2022-09-16 11:28:17,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:17,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747927325] [2022-09-16 11:28:17,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:17,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:18,031 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 11:28:18,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:18,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747927325] [2022-09-16 11:28:18,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747927325] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:18,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76652554] [2022-09-16 11:28:18,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:28:18,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:18,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:18,036 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 11:28:18,058 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 11:28:18,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:28:18,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:28:18,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:28:18,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:18,382 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 11:28:18,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:28:18,572 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 11:28:18,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76652554] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:28:18,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:28:18,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-09-16 11:28:18,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156897557] [2022-09-16 11:28:18,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:28:18,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-16 11:28:18,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:18,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-16 11:28:18,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812 [2022-09-16 11:28:18,576 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:28:18,577 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 11:28:18,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:18,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:28:18,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand